1 files changed, 137 insertions, 0 deletions
diff --git a/t/lib-t6000.sh b/t/lib-t6000.sh
new file mode 100644
index 0000000000..3f2d873fec
--- /dev/null
+++ b/t/lib-t6000.sh
@@ -0,0 +1,137 @@
+: included from 6002 and others
+
+mkdir -p .git/refs/tags
+
+>sed.script
+
+# Answer the sha1 has associated with the tag. The tag must exist in .git/refs/tags
+tag () {
+	_tag=$1
+	test -f ".git/refs/tags/$_tag" || error "tag: \"$_tag\" does not exist"
+	cat ".git/refs/tags/$_tag"
+}
+
+# Generate a commit using the text specified to make it unique and the tree
+# named by the tag specified.
+unique_commit () {
+	_text=$1
+	_tree=$2
+	shift 2
+	echo "$_text" | git commit-tree $(tag "$_tree") "$@"
+}
+
+# Save the output of a command into the tag specified. Prepend
+# a substitution script for the tag onto the front of sed.script
+save_tag () {
+	_tag=$1
+	test -n "$_tag" || error "usage: save_tag tag commit-args ..."
+	shift 1
+	"$@" >".git/refs/tags/$_tag"
+
+	echo "s/$(tag $_tag)/$_tag/g" >sed.script.tmp
+	cat sed.script >>sed.script.tmp
+	rm sed.script
+	mv sed.script.tmp sed.script
+}
+
+# Replace unhelpful sha1 hashes with their symbolic equivalents
+entag () {
+	sed -f sed.script
+}
+
+# Execute a command after first saving, then setting the GIT_AUTHOR_EMAIL
+# tag to a specified value. Restore the original value on return.
+as_author () {
+	_author=$1
+	shift 1
+	_save=$GIT_AUTHOR_EMAIL
+
+	GIT_AUTHOR_EMAIL="$_author"
+	export GIT_AUTHOR_EMAIL
+	"$@"
+	if test -z "$_save"
+	then
+		unset GIT_AUTHOR_EMAIL
+	else
+		GIT_AUTHOR_EMAIL="$_save"
+		export GIT_AUTHOR_EMAIL
+	fi
+}
+
+commit_date () {
+	_commit=$1
+	git cat-file commit $_commit |
+	sed -n "s/^committer .*> \([0-9]*\) .*/\1/p"
+}
+
+# Assign the value of fake date to a variable, but
+# allow fairly common "1971-08-16 00:00" to be omittd
+assign_fake_date () {
+	case "$2" in
+	??:??:??)	eval "$1='1971-08-16 $2'" ;;
+	??:??)		eval "$1='1971-08-16 00:$2'" ;;
+	??)		eval "$1='1971-08-16 00:00:$2'" ;;
+	*)		eval "$1='$2'" ;;
+	esac
+}
+
+on_committer_date () {
+	assign_fake_date GIT_COMMITTER_DATE "$1"
+	export GIT_COMMITTER_DATE
+	shift 1
+	"$@"
+}
+
+on_dates () {
+	assign_fake_date GIT_COMMITTER_DATE "$1"
+	assign_fake_date GIT_AUTHOR_DATE "$2"
+	export GIT_COMMITTER_DATE GIT_AUTHOR_DATE
+	shift 2
+	"$@"
+}
+
+# Execute a command and suppress any error output.
+hide_error () {
+	"$@" 2>/dev/null
+}
+
+check_output () {
+	_name=$1
+	shift 1
+	if eval "$*" | entag >"$_name.actual"
+	then
+		test_cmp "$_name.expected" "$_name.actual"
+	else
+		return 1
+	fi
+}
+
+# Turn a reasonable test description into a reasonable test name.
+# All alphanums translated into -'s which are then compressed and stripped
+# from front and back.
+name_from_description () {
+	perl -pe '
+		s/[^A-Za-z0-9.]/-/g;
+		s/-+/-/g;
+		s/-$//;
+		s/^-//;
+		y/A-Z/a-z/;
+	'
+}
+
+
+# Execute the test described by the first argument, by eval'ing
+# command line specified in the 2nd argument. Check the status code
+# is zero and that the output matches the stream read from
+# stdin.
+test_output_expect_success()
+{
+	_description=$1
+	_test=$2
+	test $# -eq 2 ||
+	error "usage: test_output_expect_success description test <<EOF ... EOF"
+
+	_name=$(echo $_description | name_from_description)
+	cat >"$_name.expected"
+	test_expect_success "$_description" "check_output $_name \"$_test\""
+}