git/t/t4042-diff-textconv-caching.sh
brian m. carlson e4c5652304 t4042: abstract away SHA-1-specific constants
Adjust the test so that it computes variables for blobs instead of using
hard-coded hashes.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-05-21 13:55:48 +09:00

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#!/bin/sh
test_description='test textconv caching'
. ./test-lib.sh
cat >helper <<'EOF'
#!/bin/sh
sed 's/^/converted: /' "$@" >helper.out
cat helper.out
EOF
chmod +x helper
test_expect_success 'setup' '
echo foo content 1 >foo.bin &&
echo bar content 1 >bar.bin &&
git add . &&
git commit -m one &&
foo1=$(git rev-parse --short HEAD:foo.bin) &&
bar1=$(git rev-parse --short HEAD:bar.bin) &&
echo foo content 2 >foo.bin &&
echo bar content 2 >bar.bin &&
git commit -a -m two &&
foo2=$(git rev-parse --short HEAD:foo.bin) &&
bar2=$(git rev-parse --short HEAD:bar.bin) &&
echo "*.bin diff=magic" >.gitattributes &&
git config diff.magic.textconv ./helper &&
git config diff.magic.cachetextconv true
'
cat >expect <<EOF
diff --git a/bar.bin b/bar.bin
index $bar1..$bar2 100644
--- a/bar.bin
+++ b/bar.bin
@@ -1 +1 @@
-converted: bar content 1
+converted: bar content 2
diff --git a/foo.bin b/foo.bin
index $foo1..$foo2 100644
--- a/foo.bin
+++ b/foo.bin
@@ -1 +1 @@
-converted: foo content 1
+converted: foo content 2
EOF
test_expect_success 'first textconv works' '
git diff HEAD^ HEAD >actual &&
test_cmp expect actual
'
test_expect_success 'cached textconv produces same output' '
git diff HEAD^ HEAD >actual &&
test_cmp expect actual
'
test_expect_success 'cached textconv does not run helper' '
rm -f helper.out &&
git diff HEAD^ HEAD >actual &&
test_cmp expect actual &&
! test -r helper.out
'
cat >expect <<EOF
diff --git a/bar.bin b/bar.bin
index $bar1..$bar2 100644
--- a/bar.bin
+++ b/bar.bin
@@ -1,2 +1,2 @@
converted: other
-converted: bar content 1
+converted: bar content 2
diff --git a/foo.bin b/foo.bin
index $foo1..$foo2 100644
--- a/foo.bin
+++ b/foo.bin
@@ -1,2 +1,2 @@
converted: other
-converted: foo content 1
+converted: foo content 2
EOF
test_expect_success 'changing textconv invalidates cache' '
echo other >other &&
git config diff.magic.textconv "./helper other" &&
git diff HEAD^ HEAD >actual &&
test_cmp expect actual
'
cat >expect <<EOF
diff --git a/bar.bin b/bar.bin
index $bar1..$bar2 100644
--- a/bar.bin
+++ b/bar.bin
@@ -1,2 +1,2 @@
converted: other
-converted: bar content 1
+converted: bar content 2
diff --git a/foo.bin b/foo.bin
index $foo1..$foo2 100644
--- a/foo.bin
+++ b/foo.bin
@@ -1 +1 @@
-converted: foo content 1
+converted: foo content 2
EOF
test_expect_success 'switching diff driver produces correct results' '
git config diff.moremagic.textconv ./helper &&
echo foo.bin diff=moremagic >>.gitattributes &&
git diff HEAD^ HEAD >actual &&
test_cmp expect actual
'
# The point here is to test that we can log the notes cache and still use it to
# produce a diff later (older versions of git would segfault on this). It's
# much more likely to come up in the real world with "log --all -p", but using
# --no-walk lets us reliably reproduce the order of traversal.
test_expect_success 'log notes cache and still use cache for -p' '
git log --no-walk -p refs/notes/textconv/magic HEAD
'
test_done