Move access and repo permission to models/perm/access (#19350)

* Move access and repo permission to models/perm/access

* Remove unnecessary code

models/repo/collaboration_test.go

@@ -0,0 +1,49 @@
+// Copyright 2022 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 repo
+
+import (
+	"testing"
+
+	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestRepository_GetCollaborators(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+	test := func(repoID int64) {
+		repo := unittest.AssertExistsAndLoadBean(t, &Repository{ID: repoID}).(*Repository)
+		collaborators, err := GetCollaborators(db.DefaultContext, repo.ID, db.ListOptions{})
+		assert.NoError(t, err)
+		expectedLen, err := db.GetEngine(db.DefaultContext).Count(&Collaboration{RepoID: repoID})
+		assert.NoError(t, err)
+		assert.Len(t, collaborators, int(expectedLen))
+		for _, collaborator := range collaborators {
+			assert.EqualValues(t, collaborator.User.ID, collaborator.Collaboration.UserID)
+			assert.EqualValues(t, repoID, collaborator.Collaboration.RepoID)
+		}
+	}
+	test(1)
+	test(2)
+	test(3)
+	test(4)
+}
+
+func TestRepository_IsCollaborator(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+
+	test := func(repoID, userID int64, expected bool) {
+		repo := unittest.AssertExistsAndLoadBean(t, &Repository{ID: repoID}).(*Repository)
+		actual, err := IsCollaborator(db.DefaultContext, repo.ID, userID)
+		assert.NoError(t, err)
+		assert.Equal(t, expected, actual)
+	}
+	test(3, 2, true)
+	test(3, unittest.NonexistentID, false)
+	test(4, 2, false)
+	test(4, 4, true)
+}