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ggregory pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/commons-text.git

commit a78023d2782b40dd1f9b1fe719fe1f5eac5f8851
Author: Gary Gregory <[email protected]>
AuthorDate: Fri Dec 12 14:23:11 2025 -0500

    Use static imports only for JUnit assertions
---
 .../text/lookup/Base64DecoderStringLookupTest.java  | 11 +++++++----
 .../text/lookup/Base64EncoderStringLookupTest.java  | 11 +++++++----
 .../text/lookup/BiFunctionStringLookupTest.java     | 21 ++++++++++++---------
 .../commons/text/lookup/BiStringLookupTest.java     |  5 +++--
 .../text/lookup/ConstantStringLookupBasicTest.java  | 15 +++++++++------
 .../text/lookup/ConstantStringLookupTest.java       | 20 +++++++++++---------
 .../commons/text/lookup/DateStringLookupTest.java   |  4 ++--
 .../commons/text/lookup/DnsStringLookupTest.java    | 20 ++++++++++++--------
 .../lookup/EnvironmentVariableStringLookupTest.java | 13 ++++++++-----
 .../commons/text/lookup/FileStringLookupTest.java   | 15 ++++++++-------
 .../text/lookup/FunctionStringLookupTest.java       | 15 +++++++++------
 .../InetAddressStringLookupLocalHostTest.java       | 18 +++++++++++-------
 .../InetAddressStringLookupLoopbackAddressTest.java | 18 +++++++++++-------
 .../text/lookup/InterpolatorStringLookupTest.java   |  5 ++---
 .../text/lookup/JavaPlatformStringLookupTest.java   |  7 ++++---
 .../commons/text/lookup/NullStringLookupTest.java   | 10 ++++++----
 .../text/lookup/PropertiesStringLookupTest.java     | 19 ++++++++++---------
 .../text/lookup/ResourceBundleStringLookupTest.java | 11 ++++++-----
 .../commons/text/lookup/ScriptStringLookupTest.java | 15 +++++++++------
 .../text/lookup/SystemPropertyStringLookupTest.java | 11 +++++++----
 .../text/lookup/UrlDecoderStringLookupTest.java     | 14 ++++++++------
 .../text/lookup/UrlEncoderStringLookupTest.java     | 10 ++++++----
 .../commons/text/lookup/UrlStringLookupTest.java    | 15 +++++++++------
 .../text/lookup/XmlDecoderStringLookupTest.java     | 11 +++++++----
 .../text/lookup/XmlEncoderStringLookupTest.java     | 11 +++++++----
 25 files changed, 191 insertions(+), 134 deletions(-)

diff --git 
a/src/test/java/org/apache/commons/text/lookup/Base64DecoderStringLookupTest.java
 
b/src/test/java/org/apache/commons/text/lookup/Base64DecoderStringLookupTest.java
index c5eac76e..99cbeeaa 100644
--- 
a/src/test/java/org/apache/commons/text/lookup/Base64DecoderStringLookupTest.java
+++ 
b/src/test/java/org/apache/commons/text/lookup/Base64DecoderStringLookupTest.java
@@ -17,7 +17,10 @@
 
 package org.apache.commons.text.lookup;
 
-import org.junit.jupiter.api.Assertions;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
 import org.junit.jupiter.api.Test;
 
 /**
@@ -27,18 +30,18 @@ class Base64DecoderStringLookupTest {
 
     @Test
     void test() {
-        Assertions.assertEquals("HelloWorld!", 
StringLookupFactory.INSTANCE_BASE64_DECODER.apply("SGVsbG9Xb3JsZCE="));
+        assertEquals("HelloWorld!", 
StringLookupFactory.INSTANCE_BASE64_DECODER.apply("SGVsbG9Xb3JsZCE="));
     }
 
     @Test
     void testNull() {
-        
Assertions.assertNull(StringLookupFactory.INSTANCE_BASE64_DECODER.apply(null));
+        assertNull(StringLookupFactory.INSTANCE_BASE64_DECODER.apply(null));
     }
 
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        
Assertions.assertFalse(StringLookupFactory.INSTANCE_BASE64_DECODER.toString().isEmpty());
+        
assertFalse(StringLookupFactory.INSTANCE_BASE64_DECODER.toString().isEmpty());
     }
 
 }
diff --git 
a/src/test/java/org/apache/commons/text/lookup/Base64EncoderStringLookupTest.java
 
b/src/test/java/org/apache/commons/text/lookup/Base64EncoderStringLookupTest.java
index df4d320d..b6741bb0 100644
--- 
a/src/test/java/org/apache/commons/text/lookup/Base64EncoderStringLookupTest.java
+++ 
b/src/test/java/org/apache/commons/text/lookup/Base64EncoderStringLookupTest.java
@@ -17,7 +17,10 @@
 
 package org.apache.commons.text.lookup;
 
-import org.junit.jupiter.api.Assertions;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
 import org.junit.jupiter.api.Test;
 
 /**
@@ -27,18 +30,18 @@ class Base64EncoderStringLookupTest {
 
     @Test
     void test() {
-        Assertions.assertEquals("SGVsbG9Xb3JsZCE=", 
StringLookupFactory.INSTANCE_BASE64_ENCODER.apply("HelloWorld!"));
+        assertEquals("SGVsbG9Xb3JsZCE=", 
StringLookupFactory.INSTANCE_BASE64_ENCODER.apply("HelloWorld!"));
     }
 
     @Test
     void testNull() {
-        
Assertions.assertNull(StringLookupFactory.INSTANCE_BASE64_ENCODER.apply(null));
+        assertNull(StringLookupFactory.INSTANCE_BASE64_ENCODER.apply(null));
     }
 
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        
Assertions.assertFalse(StringLookupFactory.INSTANCE_BASE64_ENCODER.toString().isEmpty());
+        
assertFalse(StringLookupFactory.INSTANCE_BASE64_ENCODER.toString().isEmpty());
     }
 
 }
diff --git 
a/src/test/java/org/apache/commons/text/lookup/BiFunctionStringLookupTest.java 
b/src/test/java/org/apache/commons/text/lookup/BiFunctionStringLookupTest.java
index e6f9337a..e73f64f7 100644
--- 
a/src/test/java/org/apache/commons/text/lookup/BiFunctionStringLookupTest.java
+++ 
b/src/test/java/org/apache/commons/text/lookup/BiFunctionStringLookupTest.java
@@ -17,13 +17,16 @@
 
 package org.apache.commons.text.lookup;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
 import java.util.HashMap;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.function.BiFunction;
 
 import org.apache.commons.lang3.StringUtils;
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 /**
@@ -71,25 +74,25 @@ class BiFunctionStringLookupTest {
         // Use map
         final BiStringLookup<Map<String, Object>> stringLookup = 
StringLookupFactory.INSTANCE
             .biFunctionStringLookup(nestedMapBiFunction);
-        Assertions.assertEquals(rootValue2, stringLookup.lookup(rootKey2, 
rootMap));
-        Assertions.assertEquals(subValue, stringLookup.lookup(rootKey + 
SEPARATOR + subKey, rootMap));
-        Assertions.assertEquals(subSubValue,
+        assertEquals(rootValue2, stringLookup.lookup(rootKey2, rootMap));
+        assertEquals(subValue, stringLookup.lookup(rootKey + SEPARATOR + 
subKey, rootMap));
+        assertEquals(subSubValue,
             stringLookup.lookup(rootKey + SEPARATOR + subKeyMap + SEPARATOR + 
subSubKey, rootMap));
     }
 
     @Test
     void testConcurrentHashMapNull() {
-        Assertions.assertNull(BiFunctionStringLookup.on(new 
ConcurrentHashMap<>()).apply(null));
+        assertNull(BiFunctionStringLookup.on(new 
ConcurrentHashMap<>()).apply(null));
     }
 
     @Test
     void testHashMapNull() {
-        Assertions.assertNull(BiFunctionStringLookup.on(new 
HashMap<>()).apply(null));
+        assertNull(BiFunctionStringLookup.on(new HashMap<>()).apply(null));
     }
 
     @Test
     void testNullBiFunction() {
-        Assertions.assertNull(BiFunctionStringLookup.on((BiFunction<String, 
Object, Object>) null).apply(null));
+        assertNull(BiFunctionStringLookup.on((BiFunction<String, Object, 
Object>) null).apply(null));
     }
 
     @Test
@@ -98,13 +101,13 @@ class BiFunctionStringLookupTest {
         final String value = "value";
         final Map<String, String> map = new HashMap<>();
         map.put(key, value);
-        Assertions.assertEquals(value, 
FunctionStringLookup.on(map).apply(key));
+        assertEquals(value, FunctionStringLookup.on(map).apply(key));
     }
 
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        Assertions.assertFalse(BiFunctionStringLookup.on(new 
HashMap<>()).toString().isEmpty());
+        assertFalse(BiFunctionStringLookup.on(new 
HashMap<>()).toString().isEmpty());
     }
 
 }
diff --git 
a/src/test/java/org/apache/commons/text/lookup/BiStringLookupTest.java 
b/src/test/java/org/apache/commons/text/lookup/BiStringLookupTest.java
index 5aee02ab..a54b35db 100644
--- a/src/test/java/org/apache/commons/text/lookup/BiStringLookupTest.java
+++ b/src/test/java/org/apache/commons/text/lookup/BiStringLookupTest.java
@@ -17,7 +17,8 @@
 
 package org.apache.commons.text.lookup;
 
-import org.junit.jupiter.api.Assertions;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
 import org.junit.jupiter.api.Test;
 
 /**
@@ -27,7 +28,7 @@ class BiStringLookupTest {
 
     @Test
     void testDefaultMethod() {
-        Assertions.assertEquals("a", ((BiStringLookup<Object>) key -> 
key).lookup("a", "b"));
+        assertEquals("a", ((BiStringLookup<Object>) key -> key).lookup("a", 
"b"));
     }
 
 }
diff --git 
a/src/test/java/org/apache/commons/text/lookup/ConstantStringLookupBasicTest.java
 
b/src/test/java/org/apache/commons/text/lookup/ConstantStringLookupBasicTest.java
index f3a4bbfe..d438abac 100644
--- 
a/src/test/java/org/apache/commons/text/lookup/ConstantStringLookupBasicTest.java
+++ 
b/src/test/java/org/apache/commons/text/lookup/ConstantStringLookupBasicTest.java
@@ -17,8 +17,11 @@
 
 package org.apache.commons.text.lookup;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
 import org.junit.jupiter.api.AfterEach;
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
@@ -55,12 +58,12 @@ class ConstantStringLookupBasicTest {
 
     @Test
     void testNull() {
-        Assertions.assertNull(ConstantStringLookup.INSTANCE.apply(null));
+        assertNull(ConstantStringLookup.INSTANCE.apply(null));
     }
 
     @Test
     void testNullClassFetch() {
-        Assertions.assertNull(new ConstantStringLookup() {
+        assertNull(new ConstantStringLookup() {
             @Override
             protected Class<?> fetchClass(final String className) throws 
ClassNotFoundException {
                 return null;
@@ -70,20 +73,20 @@ class ConstantStringLookupBasicTest {
 
     @Test
     void testNullValue() {
-        Assertions.assertEquals(NULL_STRING_FIXTURE, 
ConstantStringLookup.INSTANCE
+        assertEquals(NULL_STRING_FIXTURE, ConstantStringLookup.INSTANCE
             .apply(ConstantStringLookupBasicTest.class.getName() + 
".NULL_STRING_FIXTURE"));
     }
 
     @Test
     void testOne() {
-        Assertions.assertEquals(STRING_FIXTURE,
+        assertEquals(STRING_FIXTURE,
             
ConstantStringLookup.INSTANCE.apply(ConstantStringLookupBasicTest.class.getName()
 + ".STRING_FIXTURE"));
     }
 
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        
Assertions.assertFalse(ConstantStringLookup.INSTANCE.toString().isEmpty());
+        assertFalse(ConstantStringLookup.INSTANCE.toString().isEmpty());
     }
 
 }
diff --git 
a/src/test/java/org/apache/commons/text/lookup/ConstantStringLookupTest.java 
b/src/test/java/org/apache/commons/text/lookup/ConstantStringLookupTest.java
index 49d252ac..fccc45d7 100644
--- a/src/test/java/org/apache/commons/text/lookup/ConstantStringLookupTest.java
+++ b/src/test/java/org/apache/commons/text/lookup/ConstantStringLookupTest.java
@@ -16,10 +16,12 @@
  */
 package org.apache.commons.text.lookup;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
 import java.awt.event.KeyEvent;
 
 import org.junit.jupiter.api.AfterEach;
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
@@ -71,7 +73,7 @@ class ConstantStringLookupTest {
      */
     @Test
     void testLookupConstant() {
-        Assertions.assertEquals(FIELD, stringLookup.apply(variable("FIELD")), 
"Wrong value of constant");
+        assertEquals(FIELD, stringLookup.apply(variable("FIELD")), "Wrong 
value of constant");
     }
 
     /**
@@ -79,7 +81,7 @@ class ConstantStringLookupTest {
      */
     @Test
     void testLookupInvalidSyntax() {
-        Assertions.assertNull(stringLookup.apply("InvalidVariableName"),
+        assertNull(stringLookup.apply("InvalidVariableName"),
             "Non null return value for invalid variable name");
     }
 
@@ -88,7 +90,7 @@ class ConstantStringLookupTest {
      */
     @Test
     void testLookupNonExisting() {
-        Assertions.assertNull(stringLookup.apply(variable("NO_FIELD")),
+        assertNull(stringLookup.apply(variable("NO_FIELD")),
             "Non null return value for non existing constant");
     }
 
@@ -99,8 +101,8 @@ class ConstantStringLookupTest {
     void testLookupNonString() {
         final String ref = KeyEvent.class.getName() + ".VK_ESCAPE";
         final String expected = Integer.toString(KeyEvent.VK_ESCAPE);
-        Assertions.assertEquals(expected, stringLookup.apply(ref), "Wrong 
result of first lookup");
-        Assertions.assertEquals(expected, stringLookup.apply(ref), "Wrong 
result of 2nd lookup");
+        assertEquals(expected, stringLookup.apply(ref), "Wrong result of first 
lookup");
+        assertEquals(expected, stringLookup.apply(ref), "Wrong result of 2nd 
lookup");
     }
 
     /**
@@ -108,7 +110,7 @@ class ConstantStringLookupTest {
      */
     @Test
     void testLookupNull() {
-        Assertions.assertNull(stringLookup.apply(null), "Non null return value 
for null variable");
+        assertNull(stringLookup.apply(null), "Non null return value for null 
variable");
     }
 
     /**
@@ -116,7 +118,7 @@ class ConstantStringLookupTest {
      */
     @Test
     void testLookupPrivate() {
-        Assertions.assertNull(stringLookup.apply(variable("PRIVATE_FIELD")),
+        assertNull(stringLookup.apply(variable("PRIVATE_FIELD")),
             "Non null return value for non accessible field");
     }
 
@@ -125,7 +127,7 @@ class ConstantStringLookupTest {
      */
     @Test
     void testLookupUnknownClass() {
-        
Assertions.assertNull(stringLookup.apply("org.apache.commons.configuration.NonExistingConfig."
 + FIELD),
+        
assertNull(stringLookup.apply("org.apache.commons.configuration.NonExistingConfig."
 + FIELD),
             "Non null return value for unknown class");
     }
 
diff --git 
a/src/test/java/org/apache/commons/text/lookup/DateStringLookupTest.java 
b/src/test/java/org/apache/commons/text/lookup/DateStringLookupTest.java
index cd358a34..e09e8aa5 100644
--- a/src/test/java/org/apache/commons/text/lookup/DateStringLookupTest.java
+++ b/src/test/java/org/apache/commons/text/lookup/DateStringLookupTest.java
@@ -18,6 +18,7 @@
 package org.apache.commons.text.lookup;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 
@@ -26,7 +27,6 @@ import java.text.ParseException;
 import java.text.SimpleDateFormat;
 import java.util.Date;
 
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 /**
@@ -62,7 +62,7 @@ class DateStringLookupTest {
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        Assertions.assertFalse(DateStringLookup.INSTANCE.toString().isEmpty());
+        assertFalse(DateStringLookup.INSTANCE.toString().isEmpty());
     }
 
 }
diff --git 
a/src/test/java/org/apache/commons/text/lookup/DnsStringLookupTest.java 
b/src/test/java/org/apache/commons/text/lookup/DnsStringLookupTest.java
index c1ce322b..b62dee6a 100644
--- a/src/test/java/org/apache/commons/text/lookup/DnsStringLookupTest.java
+++ b/src/test/java/org/apache/commons/text/lookup/DnsStringLookupTest.java
@@ -17,10 +17,14 @@
 
 package org.apache.commons.text.lookup;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
 import java.net.InetAddress;
 import java.net.UnknownHostException;
 
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 /**
@@ -31,28 +35,28 @@ class DnsStringLookupTest {
     @Test
     void testAddressFromHostAddress() throws UnknownHostException {
         final InetAddress localHost = InetAddress.getLocalHost();
-        Assertions.assertEquals(localHost.getHostAddress(),
+        assertEquals(localHost.getHostAddress(),
             DnsStringLookup.INSTANCE.apply("address|" + 
localHost.getHostAddress()));
     }
 
     @Test
     void testAddressFromHostName() throws UnknownHostException {
         final InetAddress localHost = InetAddress.getLocalHost();
-        Assertions.assertEquals(localHost.getHostAddress(),
+        assertEquals(localHost.getHostAddress(),
             DnsStringLookup.INSTANCE.apply("address|" + 
localHost.getHostName()));
     }
 
     @Test
     void testCanonicalNameFromHostAddress() throws UnknownHostException {
         final InetAddress localHost = InetAddress.getLocalHost();
-        Assertions.assertEquals(localHost.getCanonicalHostName(),
+        assertEquals(localHost.getCanonicalHostName(),
             DnsStringLookup.INSTANCE.apply("canonical-name|" + 
localHost.getHostAddress()));
     }
 
     @Test
     void testCanonicalNameFromHostName() throws UnknownHostException {
         final InetAddress localHost = InetAddress.getLocalHost();
-        Assertions.assertEquals(localHost.getCanonicalHostName(),
+        assertEquals(localHost.getCanonicalHostName(),
             DnsStringLookup.INSTANCE.apply("canonical-name|" + 
localHost.getHostName()));
     }
 
@@ -66,18 +70,18 @@ class DnsStringLookupTest {
                 matched = true;
             }
         }
-        Assertions.assertTrue(matched);
+        assertTrue(matched);
     }
 
     @Test
     void testNull() {
-        Assertions.assertNull(DnsStringLookup.INSTANCE.apply(null));
+        assertNull(DnsStringLookup.INSTANCE.apply(null));
     }
 
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        Assertions.assertFalse(DnsStringLookup.INSTANCE.toString().isEmpty());
+        assertFalse(DnsStringLookup.INSTANCE.toString().isEmpty());
     }
 
 }
diff --git 
a/src/test/java/org/apache/commons/text/lookup/EnvironmentVariableStringLookupTest.java
 
b/src/test/java/org/apache/commons/text/lookup/EnvironmentVariableStringLookupTest.java
index 2dd79808..346adf15 100644
--- 
a/src/test/java/org/apache/commons/text/lookup/EnvironmentVariableStringLookupTest.java
+++ 
b/src/test/java/org/apache/commons/text/lookup/EnvironmentVariableStringLookupTest.java
@@ -17,8 +17,11 @@
 
 package org.apache.commons.text.lookup;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
 import org.apache.commons.lang3.SystemUtils;
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 /**
@@ -28,24 +31,24 @@ class EnvironmentVariableStringLookupTest {
 
     @Test
     void testNull() {
-        
Assertions.assertNull(StringLookupFactory.INSTANCE_ENVIRONMENT_VARIABLES.apply(null));
+        
assertNull(StringLookupFactory.INSTANCE_ENVIRONMENT_VARIABLES.apply(null));
     }
 
     @Test
     void testOne() {
         if (SystemUtils.IS_OS_WINDOWS) {
             final String key = "PATH";
-            Assertions.assertEquals(System.getenv(key), 
StringLookupFactory.INSTANCE_ENVIRONMENT_VARIABLES.apply(key));
+            assertEquals(System.getenv(key), 
StringLookupFactory.INSTANCE_ENVIRONMENT_VARIABLES.apply(key));
         } else if (SystemUtils.IS_OS_LINUX) {
             final String key = "USER";
-            Assertions.assertEquals(System.getenv(key), 
StringLookupFactory.INSTANCE_ENVIRONMENT_VARIABLES.apply(key));
+            assertEquals(System.getenv(key), 
StringLookupFactory.INSTANCE_ENVIRONMENT_VARIABLES.apply(key));
         }
     }
 
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        
Assertions.assertFalse(StringLookupFactory.INSTANCE_ENVIRONMENT_VARIABLES.toString().isEmpty());
+        
assertFalse(StringLookupFactory.INSTANCE_ENVIRONMENT_VARIABLES.toString().isEmpty());
     }
 
 }
diff --git 
a/src/test/java/org/apache/commons/text/lookup/FileStringLookupTest.java 
b/src/test/java/org/apache/commons/text/lookup/FileStringLookupTest.java
index acfaae7a..d87be3ae 100644
--- a/src/test/java/org/apache/commons/text/lookup/FileStringLookupTest.java
+++ b/src/test/java/org/apache/commons/text/lookup/FileStringLookupTest.java
@@ -18,6 +18,8 @@
 package org.apache.commons.text.lookup;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 
 import java.io.IOException;
@@ -28,7 +30,6 @@ import java.nio.file.Paths;
 
 import org.apache.commons.lang3.StringUtils;
 import org.apache.commons.text.StringSubstitutor;
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 /**
@@ -44,7 +45,7 @@ public class FileStringLookupTest {
     }
 
     public static void testFence(final String expectedString, final 
FileStringLookup fileStringLookup) {
-        Assertions.assertEquals(expectedString, 
fileStringLookup.apply("UTF-8:src/test/resources/org/apache/commons/text/document.properties"));
+        assertEquals(expectedString, 
fileStringLookup.apply("UTF-8:src/test/resources/org/apache/commons/text/document.properties"));
         assertThrows(IllegalArgumentException.class, () -> 
fileStringLookup.apply("UTF-8:/src/test/resources/org/apache/commons/text/document.properties"));
         assertThrows(IllegalArgumentException.class, () -> 
fileStringLookup.apply("UTF-8:../src/test/resources/org/apache/commons/text/document.properties"));
     }
@@ -73,19 +74,19 @@ public class FileStringLookupTest {
 
     @Test
     void testDefaultInstanceNull() {
-        Assertions.assertNull(FileStringLookup.INSTANCE.apply(null));
+        assertNull(FileStringLookup.INSTANCE.apply(null));
     }
 
     @Test
     void testDefaultInstanceOne() throws Exception {
         final String expectedString = readDocumentFixtureString();
-        Assertions.assertEquals(expectedString, 
FileStringLookup.INSTANCE.apply("UTF-8:src/test/resources/org/apache/commons/text/document.properties"));
+        assertEquals(expectedString, 
FileStringLookup.INSTANCE.apply("UTF-8:src/test/resources/org/apache/commons/text/document.properties"));
     }
 
     @Test
     void testDefaultInstanceToString() {
         // does not blow up and gives some kind of string.
-        Assertions.assertFalse(FileStringLookup.INSTANCE.toString().isEmpty());
+        assertFalse(FileStringLookup.INSTANCE.toString().isEmpty());
     }
 
     @Test
@@ -120,13 +121,13 @@ public class FileStringLookupTest {
     @Test
     void testFenceEmptyOne() throws Exception {
         final String expectedString = readDocumentFixtureString();
-        Assertions.assertEquals(expectedString, new 
FileStringLookup().apply("UTF-8:src/test/resources/org/apache/commons/text/document.properties"));
+        assertEquals(expectedString, new 
FileStringLookup().apply("UTF-8:src/test/resources/org/apache/commons/text/document.properties"));
     }
 
     @Test
     void testFenceNullOne() throws Exception {
         final String expectedString = readDocumentFixtureString();
-        Assertions.assertEquals(expectedString,
+        assertEquals(expectedString,
                 new FileStringLookup((Path[]) 
null).apply("UTF-8:src/test/resources/org/apache/commons/text/document.properties"));
     }
 
diff --git 
a/src/test/java/org/apache/commons/text/lookup/FunctionStringLookupTest.java 
b/src/test/java/org/apache/commons/text/lookup/FunctionStringLookupTest.java
index c9f29733..92ff7ac3 100644
--- a/src/test/java/org/apache/commons/text/lookup/FunctionStringLookupTest.java
+++ b/src/test/java/org/apache/commons/text/lookup/FunctionStringLookupTest.java
@@ -17,12 +17,15 @@
 
 package org.apache.commons.text.lookup;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
 import java.util.HashMap;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.function.Function;
 
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 /**
@@ -32,17 +35,17 @@ class FunctionStringLookupTest {
 
     @Test
     void testConcurrentHashMapNull() {
-        Assertions.assertNull(FunctionStringLookup.on(new 
ConcurrentHashMap<>()).apply(null));
+        assertNull(FunctionStringLookup.on(new 
ConcurrentHashMap<>()).apply(null));
     }
 
     @Test
     void testHashMapNull() {
-        Assertions.assertNull(FunctionStringLookup.on(new 
HashMap<>()).apply(null));
+        assertNull(FunctionStringLookup.on(new HashMap<>()).apply(null));
     }
 
     @Test
     void testNullFunction() {
-        Assertions.assertNull(FunctionStringLookup.on((Function<String, 
Object>) null).apply(null));
+        assertNull(FunctionStringLookup.on((Function<String, Object>) 
null).apply(null));
     }
 
     @Test
@@ -51,13 +54,13 @@ class FunctionStringLookupTest {
         final String value = "value";
         final Map<String, String> map = new HashMap<>();
         map.put(key, value);
-        Assertions.assertEquals(value, 
FunctionStringLookup.on(map).apply(key));
+        assertEquals(value, FunctionStringLookup.on(map).apply(key));
     }
 
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        Assertions.assertFalse(FunctionStringLookup.on(new 
HashMap<>()).toString().isEmpty());
+        assertFalse(FunctionStringLookup.on(new 
HashMap<>()).toString().isEmpty());
     }
 
 }
diff --git 
a/src/test/java/org/apache/commons/text/lookup/InetAddressStringLookupLocalHostTest.java
 
b/src/test/java/org/apache/commons/text/lookup/InetAddressStringLookupLocalHostTest.java
index 762f1062..8f2aad3c 100644
--- 
a/src/test/java/org/apache/commons/text/lookup/InetAddressStringLookupLocalHostTest.java
+++ 
b/src/test/java/org/apache/commons/text/lookup/InetAddressStringLookupLocalHostTest.java
@@ -17,10 +17,14 @@
 
 package org.apache.commons.text.lookup;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
 import java.net.InetAddress;
 import java.net.UnknownHostException;
 
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 /**
@@ -30,33 +34,33 @@ class InetAddressStringLookupLocalHostTest {
 
     @Test
     void testAddress() throws UnknownHostException {
-        Assertions.assertEquals(InetAddress.getLocalHost().getHostAddress(), 
InetAddressStringLookup.LOCAL_HOST.apply("address"));
+        assertEquals(InetAddress.getLocalHost().getHostAddress(), 
InetAddressStringLookup.LOCAL_HOST.apply("address"));
     }
 
     @Test
     void testBadKey() {
-        Assertions.assertThrows(IllegalArgumentException.class, () -> 
InetAddressStringLookup.LOCAL_HOST.apply("FOO"));
+        assertThrows(IllegalArgumentException.class, () -> 
InetAddressStringLookup.LOCAL_HOST.apply("FOO"));
     }
 
     @Test
     void testCanonicalName() throws UnknownHostException {
-        
Assertions.assertEquals(InetAddress.getLocalHost().getCanonicalHostName(), 
InetAddressStringLookup.LOCAL_HOST.apply("canonical-name"));
+        assertEquals(InetAddress.getLocalHost().getCanonicalHostName(), 
InetAddressStringLookup.LOCAL_HOST.apply("canonical-name"));
     }
 
     @Test
     void testName() throws UnknownHostException {
-        Assertions.assertEquals(InetAddress.getLocalHost().getHostName(), 
InetAddressStringLookup.LOCAL_HOST.apply("name"));
+        assertEquals(InetAddress.getLocalHost().getHostName(), 
InetAddressStringLookup.LOCAL_HOST.apply("name"));
     }
 
     @Test
     void testNull() {
-        Assertions.assertNull(InetAddressStringLookup.LOCAL_HOST.apply(null));
+        assertNull(InetAddressStringLookup.LOCAL_HOST.apply(null));
     }
 
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        
Assertions.assertFalse(InetAddressStringLookup.LOCAL_HOST.toString().isEmpty());
+        assertFalse(InetAddressStringLookup.LOCAL_HOST.toString().isEmpty());
     }
 
 }
diff --git 
a/src/test/java/org/apache/commons/text/lookup/InetAddressStringLookupLoopbackAddressTest.java
 
b/src/test/java/org/apache/commons/text/lookup/InetAddressStringLookupLoopbackAddressTest.java
index 282ea6dc..b69c002e 100644
--- 
a/src/test/java/org/apache/commons/text/lookup/InetAddressStringLookupLoopbackAddressTest.java
+++ 
b/src/test/java/org/apache/commons/text/lookup/InetAddressStringLookupLoopbackAddressTest.java
@@ -17,9 +17,13 @@
 
 package org.apache.commons.text.lookup;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
 import java.net.InetAddress;
 
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 /**
@@ -29,33 +33,33 @@ class InetAddressStringLookupLoopbackAddressTest {
 
     @Test
     void testAddress() {
-        
Assertions.assertEquals(InetAddress.getLoopbackAddress().getHostAddress(), 
InetAddressStringLookup.LOOPACK_ADDRESS.apply("address"));
+        assertEquals(InetAddress.getLoopbackAddress().getHostAddress(), 
InetAddressStringLookup.LOOPACK_ADDRESS.apply("address"));
     }
 
     @Test
     void testBadKey() {
-        Assertions.assertThrows(IllegalArgumentException.class, () -> 
InetAddressStringLookup.LOOPACK_ADDRESS.apply("FOO"));
+        assertThrows(IllegalArgumentException.class, () -> 
InetAddressStringLookup.LOOPACK_ADDRESS.apply("FOO"));
     }
 
     @Test
     void testCanonicalName() {
-        
Assertions.assertEquals(InetAddress.getLoopbackAddress().getCanonicalHostName(),
 InetAddressStringLookup.LOOPACK_ADDRESS.apply("canonical-name"));
+        assertEquals(InetAddress.getLoopbackAddress().getCanonicalHostName(), 
InetAddressStringLookup.LOOPACK_ADDRESS.apply("canonical-name"));
     }
 
     @Test
     void testName() {
-        
Assertions.assertEquals(InetAddress.getLoopbackAddress().getHostName(), 
InetAddressStringLookup.LOOPACK_ADDRESS.apply("name"));
+        assertEquals(InetAddress.getLoopbackAddress().getHostName(), 
InetAddressStringLookup.LOOPACK_ADDRESS.apply("name"));
     }
 
     @Test
     void testNull() {
-        
Assertions.assertNull(InetAddressStringLookup.LOOPACK_ADDRESS.apply(null));
+        assertNull(InetAddressStringLookup.LOOPACK_ADDRESS.apply(null));
     }
 
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        
Assertions.assertFalse(InetAddressStringLookup.LOOPACK_ADDRESS.toString().isEmpty());
+        
assertFalse(InetAddressStringLookup.LOOPACK_ADDRESS.toString().isEmpty());
     }
 
 }
diff --git 
a/src/test/java/org/apache/commons/text/lookup/InterpolatorStringLookupTest.java
 
b/src/test/java/org/apache/commons/text/lookup/InterpolatorStringLookupTest.java
index 6b49df48..631538a6 100644
--- 
a/src/test/java/org/apache/commons/text/lookup/InterpolatorStringLookupTest.java
+++ 
b/src/test/java/org/apache/commons/text/lookup/InterpolatorStringLookupTest.java
@@ -27,7 +27,6 @@ import java.util.HashMap;
 import java.util.Map;
 
 import org.junit.jupiter.api.AfterAll;
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
 
@@ -115,12 +114,12 @@ class InterpolatorStringLookupTest {
 
     @Test
     void testNull() {
-        Assertions.assertNull(InterpolatorStringLookup.INSTANCE.apply(null));
+        assertNull(InterpolatorStringLookup.INSTANCE.apply(null));
     }
 
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        Assertions.assertFalse(new 
InterpolatorStringLookup().toString().isEmpty());
+        assertFalse(new InterpolatorStringLookup().toString().isEmpty());
     }
 }
diff --git 
a/src/test/java/org/apache/commons/text/lookup/JavaPlatformStringLookupTest.java
 
b/src/test/java/org/apache/commons/text/lookup/JavaPlatformStringLookupTest.java
index 759e4d5c..3f081653 100644
--- 
a/src/test/java/org/apache/commons/text/lookup/JavaPlatformStringLookupTest.java
+++ 
b/src/test/java/org/apache/commons/text/lookup/JavaPlatformStringLookupTest.java
@@ -17,11 +17,12 @@
 
 package org.apache.commons.text.lookup;
 
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import org.apache.commons.lang3.ArrayUtils;
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 /**
@@ -41,13 +42,13 @@ class JavaPlatformStringLookupTest {
 
     @Test
     void testNull() {
-        Assertions.assertNull(JavaPlatformStringLookup.INSTANCE.apply(null));
+        assertNull(JavaPlatformStringLookup.INSTANCE.apply(null));
     }
 
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        
Assertions.assertFalse(JavaPlatformStringLookup.INSTANCE.toString().isEmpty());
+        assertFalse(JavaPlatformStringLookup.INSTANCE.toString().isEmpty());
     }
 
     @Test
diff --git 
a/src/test/java/org/apache/commons/text/lookup/NullStringLookupTest.java 
b/src/test/java/org/apache/commons/text/lookup/NullStringLookupTest.java
index 2612de2d..768d894d 100644
--- a/src/test/java/org/apache/commons/text/lookup/NullStringLookupTest.java
+++ b/src/test/java/org/apache/commons/text/lookup/NullStringLookupTest.java
@@ -17,7 +17,9 @@
 
 package org.apache.commons.text.lookup;
 
-import org.junit.jupiter.api.Assertions;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
 import org.junit.jupiter.api.Test;
 
 /**
@@ -27,14 +29,14 @@ class NullStringLookupTest {
 
     @Test
     void test() {
-        
Assertions.assertNull(StringLookupFactory.INSTANCE_NULL.apply("EverythingIsNull"));
-        Assertions.assertNull(StringLookupFactory.INSTANCE_NULL.apply(null));
+        
assertNull(StringLookupFactory.INSTANCE_NULL.apply("EverythingIsNull"));
+        assertNull(StringLookupFactory.INSTANCE_NULL.apply(null));
     }
 
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        
Assertions.assertFalse(StringLookupFactory.INSTANCE_NULL.toString().isEmpty());
+        assertFalse(StringLookupFactory.INSTANCE_NULL.toString().isEmpty());
     }
 
 }
diff --git 
a/src/test/java/org/apache/commons/text/lookup/PropertiesStringLookupTest.java 
b/src/test/java/org/apache/commons/text/lookup/PropertiesStringLookupTest.java
index a9a3f86f..9991056e 100644
--- 
a/src/test/java/org/apache/commons/text/lookup/PropertiesStringLookupTest.java
+++ 
b/src/test/java/org/apache/commons/text/lookup/PropertiesStringLookupTest.java
@@ -18,6 +18,8 @@
 package org.apache.commons.text.lookup;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 
 import java.nio.file.Path;
@@ -27,7 +29,6 @@ import java.util.Map;
 
 import org.apache.commons.lang3.StringUtils;
 import org.apache.commons.text.StringSubstitutor;
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 /**
@@ -131,10 +132,10 @@ public class PropertiesStringLookupTest {
 
     @Test
     void testNull() {
-        Assertions.assertNull(PropertiesStringLookup.INSTANCE.apply(null));
-        Assertions.assertNull(new PropertiesStringLookup().apply(null));
-        Assertions.assertNull(new 
PropertiesStringLookup(NULL_PATH_ARRAY).apply(null));
-        Assertions.assertNull(new 
PropertiesStringLookup(CURRENT_PATH).apply(null));
+        assertNull(PropertiesStringLookup.INSTANCE.apply(null));
+        assertNull(new PropertiesStringLookup().apply(null));
+        assertNull(new PropertiesStringLookup(NULL_PATH_ARRAY).apply(null));
+        assertNull(new PropertiesStringLookup(CURRENT_PATH).apply(null));
     }
 
     @Test
@@ -149,10 +150,10 @@ public class PropertiesStringLookupTest {
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        
Assertions.assertFalse(PropertiesStringLookup.INSTANCE.toString().isEmpty());
-        Assertions.assertFalse(new 
PropertiesStringLookup().toString().isEmpty());
-        Assertions.assertFalse(new 
PropertiesStringLookup(NULL_PATH_ARRAY).toString().isEmpty());
-        Assertions.assertFalse(new 
PropertiesStringLookup(CURRENT_PATH).toString().isEmpty());
+        assertFalse(PropertiesStringLookup.INSTANCE.toString().isEmpty());
+        assertFalse(new PropertiesStringLookup().toString().isEmpty());
+        assertFalse(new 
PropertiesStringLookup(NULL_PATH_ARRAY).toString().isEmpty());
+        assertFalse(new 
PropertiesStringLookup(CURRENT_PATH).toString().isEmpty());
     }
 
 }
diff --git 
a/src/test/java/org/apache/commons/text/lookup/ResourceBundleStringLookupTest.java
 
b/src/test/java/org/apache/commons/text/lookup/ResourceBundleStringLookupTest.java
index b3721f24..21520a89 100644
--- 
a/src/test/java/org/apache/commons/text/lookup/ResourceBundleStringLookupTest.java
+++ 
b/src/test/java/org/apache/commons/text/lookup/ResourceBundleStringLookupTest.java
@@ -17,6 +17,8 @@
 
 package org.apache.commons.text.lookup;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.mockito.Mockito.spy;
@@ -24,7 +26,6 @@ import static org.mockito.Mockito.when;
 
 import java.util.ResourceBundle;
 
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 /**
@@ -39,7 +40,7 @@ class ResourceBundleStringLookupTest {
     void testAny() {
         final String bundleName = TEST_RESOURCE_BUNDLE;
         final String bundleKey = KEY;
-        
Assertions.assertEquals(ResourceBundle.getBundle(bundleName).getString(bundleKey),
+        assertEquals(ResourceBundle.getBundle(bundleName).getString(bundleKey),
             
ResourceBundleStringLookup.INSTANCE.apply(AbstractStringLookup.toLookupKey(bundleName,
 bundleKey)));
     }
 
@@ -77,19 +78,19 @@ class ResourceBundleStringLookupTest {
 
     @Test
     void testNull() {
-        Assertions.assertNull(ResourceBundleStringLookup.INSTANCE.apply(null));
+        assertNull(ResourceBundleStringLookup.INSTANCE.apply(null));
     }
 
     @Test
     void testOne() {
-        
Assertions.assertEquals(ResourceBundle.getBundle(TEST_RESOURCE_BUNDLE).getString(KEY),
+        
assertEquals(ResourceBundle.getBundle(TEST_RESOURCE_BUNDLE).getString(KEY),
             new ResourceBundleStringLookup(TEST_RESOURCE_BUNDLE).apply(KEY));
     }
 
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        
Assertions.assertFalse(ResourceBundleStringLookup.INSTANCE.toString().isEmpty());
+        assertFalse(ResourceBundleStringLookup.INSTANCE.toString().isEmpty());
     }
 
 }
diff --git 
a/src/test/java/org/apache/commons/text/lookup/ScriptStringLookupTest.java 
b/src/test/java/org/apache/commons/text/lookup/ScriptStringLookupTest.java
index 92e41896..d61987c3 100644
--- a/src/test/java/org/apache/commons/text/lookup/ScriptStringLookupTest.java
+++ b/src/test/java/org/apache/commons/text/lookup/ScriptStringLookupTest.java
@@ -17,11 +17,14 @@
 
 package org.apache.commons.text.lookup;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 
 import javax.script.ScriptEngineManager;
 
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 /**
@@ -48,17 +51,17 @@ class ScriptStringLookupTest {
 
     @Test
     void testNull() {
-        Assertions.assertNull(ScriptStringLookup.INSTANCE.apply(null));
+        assertNull(ScriptStringLookup.INSTANCE.apply(null));
     }
 
     @Test
     void testOne() {
-        Assertions.assertEquals("Hello World!", 
ScriptStringLookup.INSTANCE.apply(JS_NAME + ":\"Hello World!\""));
+        assertEquals("Hello World!", ScriptStringLookup.INSTANCE.apply(JS_NAME 
+ ":\"Hello World!\""));
     }
 
     @Test
     void testSanityCheck() {
-        Assertions.assertNotNull(new 
ScriptEngineManager().getEngineByName(JS_NAME), JS_NAME);
+        assertNotNull(new ScriptEngineManager().getEngineByName(JS_NAME), 
JS_NAME);
     }
 
     @Test
@@ -68,14 +71,14 @@ class ScriptStringLookupTest {
 
     @Test
     void testScriptUsingMultipleColons() {
-        Assertions.assertEquals("It Works",
+        assertEquals("It Works",
             ScriptStringLookup.INSTANCE.apply(JS_NAME + ":true ? \"It Works\" 
: \"It Does Not Work\" "));
     }
 
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        
Assertions.assertFalse(ScriptStringLookup.INSTANCE.toString().isEmpty());
+        assertFalse(ScriptStringLookup.INSTANCE.toString().isEmpty());
     }
 
 }
diff --git 
a/src/test/java/org/apache/commons/text/lookup/SystemPropertyStringLookupTest.java
 
b/src/test/java/org/apache/commons/text/lookup/SystemPropertyStringLookupTest.java
index 84ae67e2..7e71681e 100644
--- 
a/src/test/java/org/apache/commons/text/lookup/SystemPropertyStringLookupTest.java
+++ 
b/src/test/java/org/apache/commons/text/lookup/SystemPropertyStringLookupTest.java
@@ -17,7 +17,10 @@
 
 package org.apache.commons.text.lookup;
 
-import org.junit.jupiter.api.Assertions;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
 import org.junit.jupiter.api.Test;
 
 /**
@@ -27,19 +30,19 @@ class SystemPropertyStringLookupTest {
 
     @Test
     void testNull() {
-        
Assertions.assertNull(StringLookupFactory.INSTANCE_SYSTEM_PROPERTIES.apply(null));
+        assertNull(StringLookupFactory.INSTANCE_SYSTEM_PROPERTIES.apply(null));
     }
 
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        
Assertions.assertFalse(StringLookupFactory.INSTANCE_SYSTEM_PROPERTIES.toString().isEmpty());
+        
assertFalse(StringLookupFactory.INSTANCE_SYSTEM_PROPERTIES.toString().isEmpty());
     }
 
     @Test
     void testUserName() {
         final String key = "user.name";
-        Assertions.assertEquals(System.getProperty(key), 
StringLookupFactory.INSTANCE_SYSTEM_PROPERTIES.apply(key));
+        assertEquals(System.getProperty(key), 
StringLookupFactory.INSTANCE_SYSTEM_PROPERTIES.apply(key));
     }
 
 }
diff --git 
a/src/test/java/org/apache/commons/text/lookup/UrlDecoderStringLookupTest.java 
b/src/test/java/org/apache/commons/text/lookup/UrlDecoderStringLookupTest.java
index b0a87bb5..a6b218b8 100644
--- 
a/src/test/java/org/apache/commons/text/lookup/UrlDecoderStringLookupTest.java
+++ 
b/src/test/java/org/apache/commons/text/lookup/UrlDecoderStringLookupTest.java
@@ -17,6 +17,9 @@
 
 package org.apache.commons.text.lookup;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.when;
@@ -24,7 +27,6 @@ import static org.mockito.Mockito.when;
 import java.io.UnsupportedEncodingException;
 import java.nio.charset.StandardCharsets;
 
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 /**
@@ -36,7 +38,7 @@ class UrlDecoderStringLookupTest {
 
     @Test
     void testAllPercent() {
-        Assertions.assertEquals(DATA, 
UrlDecoderStringLookup.INSTANCE.apply("Hello%20World%21"));
+        assertEquals(DATA, 
UrlDecoderStringLookup.INSTANCE.apply("Hello%20World%21"));
     }
 
     @Test
@@ -49,23 +51,23 @@ class UrlDecoderStringLookupTest {
 
     @Test
     void testExclamation() {
-        Assertions.assertEquals(DATA, 
UrlDecoderStringLookup.INSTANCE.apply("Hello%20World!"));
+        assertEquals(DATA, 
UrlDecoderStringLookup.INSTANCE.apply("Hello%20World!"));
     }
 
     @Test
     void testNull() {
-        Assertions.assertNull(UrlDecoderStringLookup.INSTANCE.apply(null));
+        assertNull(UrlDecoderStringLookup.INSTANCE.apply(null));
     }
 
     @Test
     void testPlus() {
-        Assertions.assertEquals(DATA, 
UrlDecoderStringLookup.INSTANCE.apply("Hello+World!"));
+        assertEquals(DATA, 
UrlDecoderStringLookup.INSTANCE.apply("Hello+World!"));
     }
 
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        
Assertions.assertFalse(UrlDecoderStringLookup.INSTANCE.toString().isEmpty());
+        assertFalse(UrlDecoderStringLookup.INSTANCE.toString().isEmpty());
     }
 
 }
diff --git 
a/src/test/java/org/apache/commons/text/lookup/UrlEncoderStringLookupTest.java 
b/src/test/java/org/apache/commons/text/lookup/UrlEncoderStringLookupTest.java
index 0b4eb757..4805d094 100644
--- 
a/src/test/java/org/apache/commons/text/lookup/UrlEncoderStringLookupTest.java
+++ 
b/src/test/java/org/apache/commons/text/lookup/UrlEncoderStringLookupTest.java
@@ -17,6 +17,9 @@
 
 package org.apache.commons.text.lookup;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.when;
@@ -24,7 +27,6 @@ import static org.mockito.Mockito.when;
 import java.io.UnsupportedEncodingException;
 import java.nio.charset.StandardCharsets;
 
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 /**
@@ -36,7 +38,7 @@ class UrlEncoderStringLookupTest {
 
     @Test
     void test() {
-        Assertions.assertEquals(DATA, 
UrlEncoderStringLookup.INSTANCE.apply("Hello World!"));
+        assertEquals(DATA, UrlEncoderStringLookup.INSTANCE.apply("Hello 
World!"));
     }
 
     @Test
@@ -49,13 +51,13 @@ class UrlEncoderStringLookupTest {
 
     @Test
     void testNull() {
-        Assertions.assertNull(UrlEncoderStringLookup.INSTANCE.apply(null));
+        assertNull(UrlEncoderStringLookup.INSTANCE.apply(null));
     }
 
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        
Assertions.assertFalse(UrlEncoderStringLookup.INSTANCE.toString().isEmpty());
+        assertFalse(UrlEncoderStringLookup.INSTANCE.toString().isEmpty());
     }
 
 }
diff --git 
a/src/test/java/org/apache/commons/text/lookup/UrlStringLookupTest.java 
b/src/test/java/org/apache/commons/text/lookup/UrlStringLookupTest.java
index e69fb60d..916e67cf 100644
--- a/src/test/java/org/apache/commons/text/lookup/UrlStringLookupTest.java
+++ b/src/test/java/org/apache/commons/text/lookup/UrlStringLookupTest.java
@@ -17,6 +17,10 @@
 
 package org.apache.commons.text.lookup;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 
 import java.net.URI;
@@ -25,7 +29,6 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 /**
@@ -55,13 +58,13 @@ class UrlStringLookupTest {
         // System.out.println(uri);
         final byte[] expectedBytes = Files.readAllBytes(path);
         final String expectedString = new String(expectedBytes, 
StandardCharsets.UTF_8);
-        Assertions.assertEquals(expectedString, 
UrlStringLookup.INSTANCE.apply("UTF-8:" + uri.toString()));
+        assertEquals(expectedString, UrlStringLookup.INSTANCE.apply("UTF-8:" + 
uri.toString()));
     }
 
     @Test
     void testHttpScheme() {
-        
Assertions.assertNotNull(UrlStringLookup.INSTANCE.apply("UTF-8:https://www.apache.org";));
-        
Assertions.assertNotNull(UrlStringLookup.INSTANCE.apply("UTF-8:https://www.google.com";));
+        
assertNotNull(UrlStringLookup.INSTANCE.apply("UTF-8:https://www.apache.org";));
+        
assertNotNull(UrlStringLookup.INSTANCE.apply("UTF-8:https://www.google.com";));
     }
 
     @Test
@@ -71,13 +74,13 @@ class UrlStringLookupTest {
 
     @Test
     void testNull() {
-        Assertions.assertNull(UrlStringLookup.INSTANCE.apply(null));
+        assertNull(UrlStringLookup.INSTANCE.apply(null));
     }
 
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        Assertions.assertFalse(UrlStringLookup.INSTANCE.toString().isEmpty());
+        assertFalse(UrlStringLookup.INSTANCE.toString().isEmpty());
     }
 
 }
diff --git 
a/src/test/java/org/apache/commons/text/lookup/XmlDecoderStringLookupTest.java 
b/src/test/java/org/apache/commons/text/lookup/XmlDecoderStringLookupTest.java
index d378f596..117c6f38 100644
--- 
a/src/test/java/org/apache/commons/text/lookup/XmlDecoderStringLookupTest.java
+++ 
b/src/test/java/org/apache/commons/text/lookup/XmlDecoderStringLookupTest.java
@@ -17,7 +17,10 @@
 
 package org.apache.commons.text.lookup;
 
-import org.junit.jupiter.api.Assertions;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
 import org.junit.jupiter.api.Test;
 
 /**
@@ -29,18 +32,18 @@ class XmlDecoderStringLookupTest {
 
     @Test
     void testDecode() {
-        Assertions.assertEquals(DATA, 
XmlDecoderStringLookup.INSTANCE.apply("&lt;element&gt;"));
+        assertEquals(DATA, 
XmlDecoderStringLookup.INSTANCE.apply("&lt;element&gt;"));
     }
 
     @Test
     void testNull() {
-        Assertions.assertNull(XmlDecoderStringLookup.INSTANCE.apply(null));
+        assertNull(XmlDecoderStringLookup.INSTANCE.apply(null));
     }
 
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        
Assertions.assertFalse(XmlDecoderStringLookup.INSTANCE.toString().isEmpty());
+        assertFalse(XmlDecoderStringLookup.INSTANCE.toString().isEmpty());
     }
 
 }
diff --git 
a/src/test/java/org/apache/commons/text/lookup/XmlEncoderStringLookupTest.java 
b/src/test/java/org/apache/commons/text/lookup/XmlEncoderStringLookupTest.java
index b597fc14..219cd6ed 100644
--- 
a/src/test/java/org/apache/commons/text/lookup/XmlEncoderStringLookupTest.java
+++ 
b/src/test/java/org/apache/commons/text/lookup/XmlEncoderStringLookupTest.java
@@ -17,7 +17,10 @@
 
 package org.apache.commons.text.lookup;
 
-import org.junit.jupiter.api.Assertions;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
 import org.junit.jupiter.api.Test;
 
 /**
@@ -29,18 +32,18 @@ class XmlEncoderStringLookupTest {
 
     @Test
     void testDecode() {
-        Assertions.assertEquals(DATA, 
XmlEncoderStringLookup.INSTANCE.apply("<element>"));
+        assertEquals(DATA, XmlEncoderStringLookup.INSTANCE.apply("<element>"));
     }
 
     @Test
     void testNull() {
-        Assertions.assertNull(XmlEncoderStringLookup.INSTANCE.apply(null));
+        assertNull(XmlEncoderStringLookup.INSTANCE.apply(null));
     }
 
     @Test
     void testToString() {
         // does not blow up and gives some kind of string.
-        
Assertions.assertFalse(XmlEncoderStringLookup.INSTANCE.toString().isEmpty());
+        assertFalse(XmlEncoderStringLookup.INSTANCE.toString().isEmpty());
     }
 
 }

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