t: add tests for diff.renames (true/false/unset)

The underlying machinery is well-tested, but the configuration option
itself was tested only in t3400-rebase.sh.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t4001-diff-rename.sh b/t/t4001-diff-rename.sh
index 06b8828a6d5734738260303031a09f5b5b2250be..f5239b525aef9e85b8bcc295be02aa42a7155968 100755 (executable)
--- a/t/t4001-diff-rename.sh
+++ b/t/t4001-diff-rename.sh
@@ -27,7 +27,7 @@ test_expect_success 'setup' '
        Line 14
        Line 15
        EOF
-       cat >expected <<-\EOF
+       cat >expected <<-\EOF &&
        diff --git a/path0 b/path1
        rename from path0
        rename to path1
@@ -43,6 +43,50 @@ test_expect_success 'setup' '
         Line 13
         Line 14
        EOF
+       cat >no-rename <<-\EOF
+       diff --git a/path0 b/path0
+       deleted file mode 100644
+       index fdbec44..0000000
+       --- a/path0
+       +++ /dev/null
+       @@ -1,15 +0,0 @@
+       -Line 1
+       -Line 2
+       -Line 3
+       -Line 4
+       -Line 5
+       -Line 6
+       -Line 7
+       -Line 8
+       -Line 9
+       -Line 10
+       -line 11
+       -Line 12
+       -Line 13
+       -Line 14
+       -Line 15
+       diff --git a/path1 b/path1
+       new file mode 100644
+       index 0000000..752c50e
+       --- /dev/null
+       +++ b/path1
+       @@ -0,0 +1,15 @@
+       +Line 1
+       +Line 2
+       +Line 3
+       +Line 4
+       +Line 5
+       +Line 6
+       +Line 7
+       +Line 8
+       +Line 9
+       +Line 10
+       +Line 11
+       +Line 12
+       +Line 13
+       +Line 14
+       +Line 15
+       EOF
 '
 
 test_expect_success \
@@ -68,6 +112,21 @@ test_expect_success \
     'validate the output.' \
     'compare_diff_patch current expected'
 
+test_expect_success 'test diff.renames=true' '
+       git -c diff.renames=true diff --cached $tree >current &&
+       compare_diff_patch current expected
+'
+
+test_expect_success 'test diff.renames=false' '
+       git -c diff.renames=false diff --cached $tree >current &&
+       compare_diff_patch current no-rename
+'
+
+test_expect_success 'test diff.renames unset' '
+       git diff --cached $tree >current &&
+       compare_diff_patch current no-rename
+'
+
 test_expect_success 'favour same basenames over different ones' '
        cp path1 another-path &&
        git add another-path &&