jdaugherty commented on code in PR #15937:
URL: https://github.com/apache/grails-core/pull/15937#discussion_r3558956857


##########
grails-test-examples/latency/src/integration-test/groovy/latencyapp/LatencyFunctionalSpec.groovy:
##########
@@ -0,0 +1,62 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *
+ *    https://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License.
+ */
+package latencyapp
+
+import java.time.Duration
+
+import spock.lang.Specification
+
+import grails.testing.mixin.integration.Integration
+import org.apache.grails.testing.http.client.HttpClientSupport
+
+/**
+ * Confirms the behavior of the {@code grails-testing-support-latency} module 
against a running
+ * application. The test environment enables latency for {@code /slow/*} with 
a minimum delay of
+ * 1500ms (see {@code application.yml}), so matched requests must take at 
least that long while
+ * unmatched requests stay well under it.
+ */
+@Integration
+class LatencyFunctionalSpec extends Specification implements HttpClientSupport 
{
+
+    private static final long MIN_DELAY_MILLIS = 1500
+
+    void 'requests matching the latency url patterns are delayed by at least 
the configured minimum'() {
+        when:
+        long start = System.nanoTime()
+        def response = http('/slow/ping')
+        long elapsedMillis = Duration.ofNanos(System.nanoTime() - 
start).toMillis()
+
+        then:
+        response.assertStatus(200)
+        response.assertContains('pong')
+        elapsedMillis >= MIN_DELAY_MILLIS

Review Comment:
   Fixed in 75605d7 — the spec now compares raw nanoseconds instead of 
truncating to millis.



##########
grails-test-examples/latency/src/integration-test/groovy/latencyapp/LatencyFunctionalSpec.groovy:
##########
@@ -0,0 +1,62 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *
+ *    https://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License.
+ */
+package latencyapp
+
+import java.time.Duration
+
+import spock.lang.Specification
+
+import grails.testing.mixin.integration.Integration
+import org.apache.grails.testing.http.client.HttpClientSupport
+
+/**
+ * Confirms the behavior of the {@code grails-testing-support-latency} module 
against a running
+ * application. The test environment enables latency for {@code /slow/*} with 
a minimum delay of
+ * 1500ms (see {@code application.yml}), so matched requests must take at 
least that long while
+ * unmatched requests stay well under it.
+ */
+@Integration
+class LatencyFunctionalSpec extends Specification implements HttpClientSupport 
{
+
+    private static final long MIN_DELAY_MILLIS = 1500
+
+    void 'requests matching the latency url patterns are delayed by at least 
the configured minimum'() {
+        when:
+        long start = System.nanoTime()
+        def response = http('/slow/ping')
+        long elapsedMillis = Duration.ofNanos(System.nanoTime() - 
start).toMillis()
+
+        then:
+        response.assertStatus(200)
+        response.assertContains('pong')
+        elapsedMillis >= MIN_DELAY_MILLIS
+    }
+
+    void 'requests outside the latency url patterns are not delayed'() {
+        when:
+        long start = System.nanoTime()
+        def response = http('/fast/ping')
+        long elapsedMillis = Duration.ofNanos(System.nanoTime() - 
start).toMillis()
+
+        then:
+        response.assertStatus(200)
+        response.assertContains('pong')
+        elapsedMillis < MIN_DELAY_MILLIS

Review Comment:
   Fixed in 75605d7 — same change, nanosecond comparison throughout.



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