git-p4: add test for p4 labels

Add basic test of p4 label import. Checks label import and
import with shell metachars; labels with different length
descriptions.

Signed-off-by: Luke Diamand <luke@diamand.org>
Acked-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t9804-git-p4-label.sh

@@ -0,0 +1,72 @@
+test_description='git-p4 p4 label tests'
+
+. ./lib-git-p4.sh
+
+test_expect_success 'start p4d' '
+	start_p4d
+'
+
+# Basic p4 label tests.
+#
+# Note: can't have more than one label per commit - others
+# are silently discarded.
+#
+test_expect_success 'basic p4 labels' '
+	test_when_finished cleanup_git &&
+	(
+		cd "$cli" &&
+		mkdir -p main &&
+
+		echo f1 >main/f1 &&
+		p4 add main/f1 &&
+		p4 submit -d "main/f1" &&
+
+		echo f2 >main/f2 &&
+		p4 add main/f2 &&
+		p4 submit -d "main/f2" &&
+
+		echo f3 >main/file_with_\$metachar &&
+		p4 add main/file_with_\$metachar &&
+		p4 submit -d "file with metachar" &&
+
+		p4 tag -l tag_f1_only main/f1 &&
+		p4 tag -l tag_with\$_shell_char main/... &&
+
+		echo f4 >main/f4 &&
+		p4 add main/f4 &&
+		p4 submit -d "main/f4" &&
+
+		p4 label -i <<-EOF &&
+		Label: long_label
+		Description:
+		   A Label first line
+		   A Label second line
+		View:	//depot/...
+		EOF
+
+		p4 tag -l long_label ... &&
+
+		p4 labels ... &&
+
+		"$GITP4" clone --dest="$git" --detect-labels //depot@all &&
+		cd "$git" &&
+
+		git tag &&
+		git tag >taglist &&
+		test_line_count = 3 taglist &&
+
+		cd main &&
+		git checkout tag_tag_f1_only &&
+		! test -f f2 &&
+		git checkout tag_tag_with\$_shell_char &&
+		test -f f1 && test -f f2 && test -f file_with_\$metachar &&
+
+		git show tag_long_label | grep -q "A Label second line"
+	)
+'
+
+test_expect_success 'kill p4d' '
+	kill_p4d
+'
+
+test_done