move code.gitea.io/git to code.gitea.io/gitea/modules/git (#6364)

* move code.gitea.io/git to code.gitea.io/gitea/modules/git

* fix imports

* fix fmt

* fix misspell

* remove wrong tests data

* fix unit tests

* fix tests

* fix tests

* fix tests

* fix tests

* fix tests

* enable Debug to trace the failure tests

* fix tests

* fix tests

* fix tests

* fix tests

* fix tests

* comment commit count tests since git clone depth is 50

* fix tests

* update from code.gitea.io/git

* revert change to makefile

modules/git/tree_entry_test.go

@@ -0,0 +1,98 @@
+// Copyright 2017 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package git
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func getTestEntries() Entries {
+	return Entries{
+		&TreeEntry{name: "v1.0", mode: EntryModeTree},
+		&TreeEntry{name: "v2.0", mode: EntryModeTree},
+		&TreeEntry{name: "v2.1", mode: EntryModeTree},
+		&TreeEntry{name: "v2.12", mode: EntryModeTree},
+		&TreeEntry{name: "v2.2", mode: EntryModeTree},
+		&TreeEntry{name: "v12.0", mode: EntryModeTree},
+		&TreeEntry{name: "abc", mode: EntryModeBlob},
+		&TreeEntry{name: "bcd", mode: EntryModeBlob},
+	}
+}
+
+func TestEntriesSort(t *testing.T) {
+	entries := getTestEntries()
+	entries.Sort()
+	assert.Equal(t, "v1.0", entries[0].Name())
+	assert.Equal(t, "v12.0", entries[1].Name())
+	assert.Equal(t, "v2.0", entries[2].Name())
+	assert.Equal(t, "v2.1", entries[3].Name())
+	assert.Equal(t, "v2.12", entries[4].Name())
+	assert.Equal(t, "v2.2", entries[5].Name())
+	assert.Equal(t, "abc", entries[6].Name())
+	assert.Equal(t, "bcd", entries[7].Name())
+}
+
+func TestEntriesCustomSort(t *testing.T) {
+	entries := getTestEntries()
+	entries.CustomSort(func(s1, s2 string) bool {
+		return s1 > s2
+	})
+	assert.Equal(t, "v2.2", entries[0].Name())
+	assert.Equal(t, "v2.12", entries[1].Name())
+	assert.Equal(t, "v2.1", entries[2].Name())
+	assert.Equal(t, "v2.0", entries[3].Name())
+	assert.Equal(t, "v12.0", entries[4].Name())
+	assert.Equal(t, "v1.0", entries[5].Name())
+	assert.Equal(t, "bcd", entries[6].Name())
+	assert.Equal(t, "abc", entries[7].Name())
+}
+
+func TestFollowLink(t *testing.T) {
+	r, err := OpenRepository("tests/repos/repo1_bare")
+	assert.NoError(t, err)
+
+	commit, err := r.GetCommit("37991dec2c8e592043f47155ce4808d4580f9123")
+	assert.NoError(t, err)
+
+	// get the symlink
+	lnk, err := commit.Tree.GetTreeEntryByPath("foo/bar/link_to_hello")
+	assert.NoError(t, err)
+	assert.True(t, lnk.IsLink())
+
+	// should be able to dereference to target
+	target, err := lnk.FollowLink()
+	assert.NoError(t, err)
+	assert.Equal(t, target.Name(), "hello")
+	assert.False(t, target.IsLink())
+	assert.Equal(t, target.ID.String(), "b14df6442ea5a1b382985a6549b85d435376c351")
+
+	// should error when called on normal file
+	target, err = commit.Tree.GetTreeEntryByPath("file1.txt")
+	assert.NoError(t, err)
+	_, err = target.FollowLink()
+	assert.Equal(t, err.Error(), "file1.txt: not a symlink")
+
+	// should error for broken links
+	target, err = commit.Tree.GetTreeEntryByPath("foo/broken_link")
+	assert.NoError(t, err)
+	assert.True(t, target.IsLink())
+	_, err = target.FollowLink()
+	assert.Equal(t, err.Error(), "broken_link: broken link")
+
+	// should error for external links
+	target, err = commit.Tree.GetTreeEntryByPath("foo/outside_repo")
+	assert.NoError(t, err)
+	assert.True(t, target.IsLink())
+	_, err = target.FollowLink()
+	assert.Equal(t, err.Error(), "outside_repo: points outside of repo")
+
+	// testing fix for short link bug
+	target, err = commit.Tree.GetTreeEntryByPath("foo/link_short")
+	assert.NoError(t, err)
+	_, err = target.FollowLink()
+	assert.Equal(t, err.Error(), "link_short: broken link")
+}