[PATCH/RFC 6/6] test: add simple sorted tag test

@@ -174,6 +174,8 @@ test_expect_success 'listing all tags should print

@@ -579,6 +581,57 @@ test_expect_success \
 	test_cmp expect actual
 '

+# listing various tags sorted by date:
+test_tick
+
+time=$test_tick
+get_tag_header dated-tag-Z $commit commit $time >expect
+echo "A dated message +0" >>expect
+test_expect_success \
+	'creating an annotated tag with -m message should succeed' '
+	git tag -m "A dated message +0" dated-tag-Z &&
+	get_tag_msg dated-tag-Z >actual &&
+	test_cmp expect actual
+'
+
+time=$(($test_tick + 30000))
+GIT_COMMITTER_DATE="$time -0700"
+GIT_AUTHOR_DATE="$time -0700"
+export GIT_COMMITTER_DATE GIT_AUTHOR_DATE
+
+get_tag_header dated-tag-W $commit commit $time >expect
+echo "A dated message +3" >>expect
+test_expect_success \
+	'creating an annotated tag with -m message should succeed' '
+	git tag -m "A dated message +3" dated-tag-W &&
+	get_tag_msg dated-tag-W >actual &&
+	test_cmp expect actual
+'
+
+time=$(($test_tick + 10000))
+GIT_COMMITTER_DATE="$time -0700"
+GIT_AUTHOR_DATE="$time -0700"
+export GIT_COMMITTER_DATE GIT_AUTHOR_DATE
+
+get_tag_header dated-tag-Y $commit commit $time >expect
+echo "A dated message +1" >>expect
+test_expect_success \
+	'creating an annotated tag with -m message should succeed' '
+	git tag -m "A dated message +1" dated-tag-Y &&
+	get_tag_msg dated-tag-Y >actual &&
+	test_cmp expect actual
+'
+
+cat >expect <<EOF
+dated-tag-Z
+dated-tag-Y
+dated-tag-W
+EOF
+test_expect_success 'listing annotated tags by date' '
+	git tag -l -D "*dated*" > actual &&
+	test_cmp expect actual
+'
+
 # subsequent tests require gpg; check if it is available
 gpg --version >/dev/null
 if [ $? -eq 127 ]; then