lib/git: add Git type with method IsIgnored

The Git type is for working with single git repository.

The [Git.IsIgnored] method is to check if the `path` is ignored by
git.
This is processed by matching it with all of the pattern in the
".gitignore" file from the path directory and its parent until the
root of Git repository.

1 files changed, 23 insertions, 3 deletions

diff --git a/lib/git/git_test.go b/lib/git/git_test.go
index bcc63a95..70a9ccca 100644
--- a/lib/git/git_test.go
+++ b/lib/git/git_test.go
@@ -1,6 +1,5 @@
-// Copyright 2018, Shulhan <ms@kilabit.info>. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// SPDX-License-Identifier: BSD-3-Clause
+// SPDX-FileCopyrightText: 2018 M. Shulhan <ms@kilabit.info>
 
 package git
 
@@ -44,6 +43,27 @@ func TestMain(m *testing.M) {
 	os.Exit(s)
 }
 
+func TestNew(t *testing.T) {
+	type testCase struct {
+		dir      string
+		expError string
+	}
+	var listCase = []testCase{{
+		dir:      `testdata/New/fail_no_git`,
+		expError: `New: "testdata/New/fail_no_git" is not a git repository`,
+	}, {
+		dir:      `testdata/New/fail_not_dir`,
+		expError: `New: "testdata/New/fail_not_dir" is not a git repository`,
+	}}
+
+	var err error
+	var tcase testCase
+	for _, tcase = range listCase {
+		_, err = New(tcase.dir)
+		test.Assert(t, `error`, tcase.expError, err.Error())
+	}
+}
+
 func TestClone(t *testing.T) {
 	cases := []struct {
 		desc, dest, expErr, expStderr, expStdout string