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-rwxr-xr-xt/t4051-diff-function-context.sh92
1 files changed, 92 insertions, 0 deletions
diff --git a/t/t4051-diff-function-context.sh b/t/t4051-diff-function-context.sh
new file mode 100755
index 0000000000..001d678e09
--- /dev/null
+++ b/t/t4051-diff-function-context.sh
@@ -0,0 +1,92 @@
+#!/bin/sh
+
+test_description='diff function context'
+
+. ./test-lib.sh
+. "$TEST_DIRECTORY"/diff-lib.sh
+
+
+cat <<\EOF >hello.c
+#include <stdio.h>
+
+static int a(void)
+{
+ /*
+ * Dummy.
+ */
+}
+
+static int hello_world(void)
+{
+ /* Classic. */
+ printf("Hello world.\n");
+
+ /* Success! */
+ return 0;
+}
+static int b(void)
+{
+ /*
+ * Dummy, too.
+ */
+}
+
+int main(int argc, char **argv)
+{
+ a();
+ b();
+ return hello_world();
+}
+EOF
+
+test_expect_success 'setup' '
+ git add hello.c &&
+ test_tick &&
+ git commit -m initial &&
+
+ grep -v Classic <hello.c >hello.c.new &&
+ mv hello.c.new hello.c
+'
+
+cat <<\EOF >expected
+diff --git a/hello.c b/hello.c
+--- a/hello.c
++++ b/hello.c
+@@ -10,8 +10,7 @@ static int a(void)
+ static int hello_world(void)
+ {
+- /* Classic. */
+ printf("Hello world.\n");
+
+ /* Success! */
+ return 0;
+ }
+EOF
+
+test_expect_success 'diff -U0 -W' '
+ git diff -U0 -W >actual &&
+ compare_diff_patch actual expected
+'
+
+cat <<\EOF >expected
+diff --git a/hello.c b/hello.c
+--- a/hello.c
++++ b/hello.c
+@@ -9,9 +9,8 @@ static int a(void)
+
+ static int hello_world(void)
+ {
+- /* Classic. */
+ printf("Hello world.\n");
+
+ /* Success! */
+ return 0;
+ }
+EOF
+
+test_expect_success 'diff -W' '
+ git diff -W >actual &&
+ compare_diff_patch actual expected
+'
+
+test_done