tests: do not use implicit "git diff --no-index"

As a general principle, we should not use "git diff" to validate the
results of what git command that is being tested has done.  We would not
know if we are testing the command in question, or locating a bug in the
cute hack of "git diff --no-index".

Rather use test_cmp for that purpose.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 12 insertions, 12 deletions

diff --git a/t/t6300-for-each-ref.sh b/t/t6300-for-each-ref.sh
index f46ec93..91ea85d 100755
--- a/t/t6300-for-each-ref.sh
+++ b/t/t6300-for-each-ref.sh
@@ -75,14 +75,14 @@ EOF
 test_expect_success 'Check unformatted date fields output' '
 	(git for-each-ref --shell --format="%(refname) %(committerdate) %(authordate)" refs/heads &&
 	git for-each-ref --shell --format="%(refname) %(taggerdate)" refs/tags) >actual &&
-	git diff expected actual
+	test_cmp expected actual
 '
 
 test_expect_success 'Check format "default" formatted date fields output' '
 	f=default &&
 	(git for-each-ref --shell --format="%(refname) %(committerdate:$f) %(authordate:$f)" refs/heads &&
 	git for-each-ref --shell --format="%(refname) %(taggerdate:$f)" refs/tags) >actual &&
-	git diff expected actual
+	test_cmp expected actual
 '
 
 # Don't know how to do relative check because I can't know when this script
@@ -109,7 +109,7 @@ test_expect_success 'Check format "short" date fields output' '
 	f=short &&
 	(git for-each-ref --shell --format="%(refname) %(committerdate:$f) %(authordate:$f)" refs/heads &&
 	git for-each-ref --shell --format="%(refname) %(taggerdate:$f)" refs/tags) >actual &&
-	git diff expected actual
+	test_cmp expected actual
 '
 
 cat >expected <<\EOF
@@ -121,7 +121,7 @@ test_expect_success 'Check format "local" date fields output' '
 	f=local &&
 	(git for-each-ref --shell --format="%(refname) %(committerdate:$f) %(authordate:$f)" refs/heads &&
 	git for-each-ref --shell --format="%(refname) %(taggerdate:$f)" refs/tags) >actual &&
-	git diff expected actual
+	test_cmp expected actual
 '
 
 cat >expected <<\EOF
@@ -133,7 +133,7 @@ test_expect_success 'Check format "iso8601" date fields output' '
 	f=iso8601 &&
 	(git for-each-ref --shell --format="%(refname) %(committerdate:$f) %(authordate:$f)" refs/heads &&
 	git for-each-ref --shell --format="%(refname) %(taggerdate:$f)" refs/tags) >actual &&
-	git diff expected actual
+	test_cmp expected actual
 '
 
 cat >expected <<\EOF
@@ -145,7 +145,7 @@ test_expect_success 'Check format "rfc2822" date fields output' '
 	f=rfc2822 &&
 	(git for-each-ref --shell --format="%(refname) %(committerdate:$f) %(authordate:$f)" refs/heads &&
 	git for-each-ref --shell --format="%(refname) %(taggerdate:$f)" refs/tags) >actual &&
-	git diff expected actual
+	test_cmp expected actual
 '
 
 cat >expected <<\EOF
@@ -155,7 +155,7 @@ EOF
 
 test_expect_success 'Verify ascending sort' '
 	git-for-each-ref --format="%(refname)" --sort=refname >actual &&
-	git diff expected actual
+	test_cmp expected actual
 '
 
 
@@ -166,7 +166,7 @@ EOF
 
 test_expect_success 'Verify descending sort' '
 	git-for-each-ref --format="%(refname)" --sort=-refname >actual &&
-	git diff expected actual
+	test_cmp expected actual
 '
 
 cat >expected <<\EOF
@@ -176,17 +176,17 @@ EOF
 
 test_expect_success 'Quoting style: shell' '
 	git for-each-ref --shell --format="%(refname)" >actual &&
-	git diff expected actual
+	test_cmp expected actual
 '
 
 test_expect_success 'Quoting style: perl' '
 	git for-each-ref --perl --format="%(refname)" >actual &&
-	git diff expected actual
+	test_cmp expected actual
 '
 
 test_expect_success 'Quoting style: python' '
 	git for-each-ref --python --format="%(refname)" >actual &&
-	git diff expected actual
+	test_cmp expected actual
 '
 
 cat >expected <<\EOF
@@ -196,7 +196,7 @@ EOF
 
 test_expect_success 'Quoting style: tcl' '
 	git for-each-ref --tcl --format="%(refname)" >actual &&
-	git diff expected actual
+	test_cmp expected actual
 '
 
 for i in "--perl --shell" "-s --python" "--python --tcl" "--tcl --perl"; do