[PATCH v2 1/2] sha1-array: add test-sha1-array and basic tests

2014-10-01 Thread René Scharfe
Helped-by: Jeff King p...@peff.net
Helped-by: Eric Sunshine sunsh...@sunshineco.com
Signed-off-by: Rene Scharfe l@web.de
---
Added a test for looking up a non-existing entry in an array that
contains duplicates, as suggested by Jeff.  Changed echo20() to add
a space after the prefix as needed, as suggested by Eric.

 .gitignore|  1 +
 Makefile  |  1 +
 t/t0064-sha1-array.sh | 74 +++
 test-sha1-array.c | 34 +++
 4 files changed, 110 insertions(+)
 create mode 100755 t/t0064-sha1-array.sh
 create mode 100644 test-sha1-array.c

diff --git a/.gitignore b/.gitignore
index 5bfb234..9ec40fa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -199,6 +199,7 @@
 /test-revision-walking
 /test-run-command
 /test-sha1
+/test-sha1-array
 /test-sigchain
 /test-string-list
 /test-subprocess
diff --git a/Makefile b/Makefile
index f34a2d4..356feb5 100644
--- a/Makefile
+++ b/Makefile
@@ -568,6 +568,7 @@ TEST_PROGRAMS_NEED_X += test-revision-walking
 TEST_PROGRAMS_NEED_X += test-run-command
 TEST_PROGRAMS_NEED_X += test-scrap-cache-tree
 TEST_PROGRAMS_NEED_X += test-sha1
+TEST_PROGRAMS_NEED_X += test-sha1-array
 TEST_PROGRAMS_NEED_X += test-sigchain
 TEST_PROGRAMS_NEED_X += test-string-list
 TEST_PROGRAMS_NEED_X += test-subprocess
diff --git a/t/t0064-sha1-array.sh b/t/t0064-sha1-array.sh
new file mode 100755
index 000..3f26e11
--- /dev/null
+++ b/t/t0064-sha1-array.sh
@@ -0,0 +1,74 @@
+#!/bin/sh
+
+test_description='basic tests for the SHA1 array implementation'
+. ./test-lib.sh
+
+echo20() {
+   prefix=${1:+$1 }
+   shift
+   while test $# -gt 0
+   do
+   echo $prefix$1$1$1$1$1$1$1$1$1$1$1$1$1$1$1$1$1$1$1$1
+   shift
+   done
+}
+
+test_expect_success 'ordered enumeration' '
+   echo20  44 55 88 aa expect 
+   {
+   echo20 append 88 44 aa 55 
+   echo for_each_unique
+   } | test-sha1-array actual 
+   test_cmp expect actual
+'
+
+test_expect_success 'ordered enumeration with duplicate suppression' '
+   echo20  44 55 88 aa expect 
+   {
+   echo20 append 88 44 aa 55 
+   echo20 append 88 44 aa 55 
+   echo for_each_unique
+   } | test-sha1-array actual 
+   test_cmp expect actual
+'
+
+test_expect_success 'lookup' '
+   {
+   echo20 append 88 44 aa 55 
+   echo20 lookup 55
+   } | test-sha1-array actual 
+   n=$(cat actual) 
+   test $n -eq 1
+'
+
+test_expect_success 'lookup non-existing entry' '
+   {
+   echo20 append 88 44 aa 55 
+   echo20 lookup 33
+   } | test-sha1-array actual 
+   n=$(cat actual) 
+   test $n -lt 0
+'
+
+test_expect_success 'lookup with duplicates' '
+   {
+   echo20 append 88 44 aa 55 
+   echo20 append 88 44 aa 55 
+   echo20 lookup 55
+   } | test-sha1-array actual 
+   n=$(cat actual) 
+   test $n -ge 2 
+   test $n -le 3
+'
+
+test_expect_success 'lookup non-existing entry with duplicates' '
+   {
+   echo20 append 88 44 aa 55 
+   echo20 append 88 44 aa 55 
+   echo20 lookup 66
+   } | test-sha1-array actual 
+   n=$(cat actual) 
+   test $n -lt 0
+'
+
+test_done
diff --git a/test-sha1-array.c b/test-sha1-array.c
new file mode 100644
index 000..ddc491e
--- /dev/null
+++ b/test-sha1-array.c
@@ -0,0 +1,34 @@
+#include cache.h
+#include sha1-array.h
+
+static void print_sha1(const unsigned char sha1[20], void *data)
+{
+   puts(sha1_to_hex(sha1));
+}
+
+int main(int argc, char **argv)
+{
+   struct sha1_array array = SHA1_ARRAY_INIT;
+   struct strbuf line = STRBUF_INIT;
+
+   while (strbuf_getline(line, stdin, '\n') != EOF) {
+   const char *arg;
+   unsigned char sha1[20];
+
+   if (skip_prefix(line.buf, append , arg)) {
+   if (get_sha1_hex(arg, sha1))
+   die(not a hexadecimal SHA1: %s, arg);
+   sha1_array_append(array, sha1);
+   } else if (skip_prefix(line.buf, lookup , arg)) {
+   if (get_sha1_hex(arg, sha1))
+   die(not a hexadecimal SHA1: %s, arg);
+   printf(%d\n, sha1_array_lookup(array, sha1));
+   } else if (!strcmp(line.buf, clear))
+   sha1_array_clear(array);
+   else if (!strcmp(line.buf, for_each_unique))
+   sha1_array_for_each_unique(array, print_sha1, NULL);
+   else
+   die(unknown command: %s, line.buf);
+   }
+   return 0;
+}
-- 
2.1.2

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Re: [PATCH v2 1/2] sha1-array: add test-sha1-array and basic tests

2014-10-01 Thread Jeff King
On Wed, Oct 01, 2014 at 05:00:33PM +0200, René Scharfe wrote:

 Helped-by: Jeff King p...@peff.net
 Helped-by: Eric Sunshine sunsh...@sunshineco.com
 Signed-off-by: Rene Scharfe l@web.de
 ---
 Added a test for looking up a non-existing entry in an array that
 contains duplicates, as suggested by Jeff.  Changed echo20() to add
 a space after the prefix as needed, as suggested by Eric.

Both patches look good to me.

-Peff
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