test: refactor to use "test_config"

Refactor to use the modern "test_config" test utility instead of manual
"git config" as the former provides clean up on test completion.

This is a prerequisite to the commits that follow which add to this test
file.

Signed-off-by: Leon Michalak <leonmichalak6@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t4055-diff-context.sh b/t/t4055-diff-context.sh
index c66f966a3ab32420fa90ea7ea77a09ae4049d9db..1384a8195705e3a838b3e4c442d19315917945f4 100755 (executable)
--- a/t/t4055-diff-context.sh
+++ b/t/t4055-diff-context.sh
@@ -47,43 +47,43 @@ test_expect_success 'the default number of context lines is 3' '
 test_expect_success 'diff.context honored by "log"' '
        git log -1 -p >output &&
        test_grep ! firstline output &&
-       git config diff.context 8 &&
+       test_config diff.context 8 &&
        git log -1 -p >output &&
        test_grep "^ firstline" output
 '
 
 test_expect_success 'The -U option overrides diff.context' '
-       git config diff.context 8 &&
+       test_config diff.context 8 &&
        git log -U4 -1 >output &&
        test_grep ! "^ firstline" output
 '
 
 test_expect_success 'diff.context honored by "diff"' '
-       git config diff.context 8 &&
+       test_config diff.context 8 &&
        git diff >output &&
        test_grep "^ firstline" output
 '
 
 test_expect_success 'plumbing not affected' '
-       git config diff.context 8 &&
+       test_config diff.context 8 &&
        git diff-files -p >output &&
        test_grep ! "^ firstline" output
 '
 
 test_expect_success 'non-integer config parsing' '
-       git config diff.context no &&
+       test_config diff.context no &&
        test_must_fail git diff 2>output &&
        test_grep "bad numeric config value" output
 '
 
 test_expect_success 'negative integer config parsing' '
-       git config diff.context -1 &&
+       test_config diff.context -1 &&
        test_must_fail git diff 2>output &&
        test_grep "bad config variable" output
 '
 
 test_expect_success '-U0 is valid, so is diff.context=0' '
-       git config diff.context 0 &&
+       test_config diff.context 0 &&
        git diff >output &&
        test_grep "^-ADDED" output &&
        test_grep "^+MODIFIED" output