[PATCH v2 2/2] t0021: test checkout and commit of foreign idents

[Marcus Comstedt <marcus@mc.pp.se>]

Add test cases for the following behaviors:

  * Checking out a file with a foreign ident should not flag
    the file as modified.  This is to prevent a mess when checking
    out old versions, and to allow a migration model where files
    are allowed to keep their foreign ident as long as their
    content is also "foreign", i.e. not modified since the migration
    to git.

  * Committing to a file with a foreign ident should replace the
    foreign ident with a native ident.  This is simply to get
    the normal behavior of ident:  When the contents of the file is
    updated, so is the ident.

Signed-off-by: Marcus Comstedt <marcus@mc.pp.se>
---
 t/t0021-conversion.sh |   58 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 58 insertions(+), 0 deletions(-)

diff --git a/t/t0021-conversion.sh b/t/t0021-conversion.sh
index 828e35b..c0ad9e8 100755
--- a/t/t0021-conversion.sh
+++ b/t/t0021-conversion.sh
@@ -93,4 +93,62 @@ test_expect_success expanded_in_repo '
 	cmp expanded-keywords expected-output
 '
 
+# Check that a file containing idents (native or foreign) is not
+# spuriously flagged as modified on checkout
+test_expect_success 'ident pristine after checkout' '
+	{
+		echo "File with expanded keywords"
+		echo "\$Id\$"
+		echo "\$Id: Foreign Commit With Spaces \$"
+	} > native-and-foreign-idents &&
+
+	{
+		echo "File with expanded keywords"
+		echo "\$Id: 9bdc217750894eed31bb870e9ffa00599f0573a2 \$"
+		echo "\$Id: Foreign Commit With Spaces \$"
+	} > expected-output &&
+
+	git add native-and-foreign-idents &&
+	git commit -m "File with native and foreign idents" &&
+
+	echo "native-and-foreign-idents ident" >> .gitattributes &&
+
+	rm -f native-and-foreign-idents &&
+	git checkout -- native-and-foreign-idents &&
+	cat native-and-foreign-idents &&
+	cmp native-and-foreign-idents expected-output &&
+	touch native-and-foreign-idents &&
+	git status --porcelain native-and-foreign-idents > output &&
+	test ! -s output &&
+	git diff -- native-and-foreign-idents > output &&
+	test ! -s output
+'
+
+# Check that actually modifying the file and committing it produces a
+# new ident on checkout
+test_expect_success 'foreign ident replaced on commit' '
+	{
+		echo "File with expanded keywords"
+		echo "\$Id: 2499e26293e36cc92399835e497ef6396d710055 \$"
+		echo "\$Id: 2499e26293e36cc92399835e497ef6396d710055 \$"
+		echo "Some new content"
+	} > expected-output &&
+
+	echo "1	0	native-and-foreign-idents" > expected-stat1 &&
+	echo "2	1	native-and-foreign-idents" > expected-stat2 &&
+
+	echo "Some new content" >> native-and-foreign-idents &&
+	git diff --numstat -- native-and-foreign-idents > output &&
+	cmp output expected-stat1 &&
+	git add native-and-foreign-idents &&
+	git commit -m "Modified file" &&
+	git diff --numstat HEAD^ HEAD -- native-and-foreign-idents > output &&
+	cmp output expected-stat2 &&
+	rm -f native-and-foreign-idents &&
+	git checkout -- native-and-foreign-idents &&
+	cat native-and-foreign-idents &&
+	cmp native-and-foreign-idents expected-output
+'
+
+
 test_done
-- 
1.7.2