[tests] Add TestGitLabContexts

Author: geropl

test/tests/workspace/contexts_test.go

@@ -29,6 +29,12 @@ func TestGitHubContexts(t *testing.T) {
 			WorkspaceRoot:  "/workspace/gitpod",
 			ExpectedBranch: "main",
 		},
+		{
+			Name:           "open branch",
+			ContextURL:     "github.com/gitpod-io/gitpod-test-repo/integration-test-1",
+			WorkspaceRoot:  "/workspace/gitpod-test-repo",
+			ExpectedBranch: "integration-test-1",
+		},
 		{
 			Name:           "open issue",
 			ContextURL:     "github.com/gitpod-io/gitpod-test-repo/issues/88",
@@ -45,6 +51,36 @@ func TestGitHubContexts(t *testing.T) {
 	runContextTests(t, tests)
 }
 
+func TestGitLabContexts(t *testing.T) {
+	tests := []ContextTest{
+		{
+			Name:           "open repository",
+			ContextURL:     "gitlab.com/AlexTugarev/gp-test",
+			WorkspaceRoot:  "/workspace/gp-test",
+			ExpectedBranch: "main",
+		},
+		{
+			Name:           "open branch",
+			ContextURL:     "gitlab.com/AlexTugarev/gp-test/tree/wip",
+			WorkspaceRoot:  "/workspace/gp-test",
+			ExpectedBranch: "wip",
+		},
+		{
+			Name:           "open issue",
+			ContextURL:     "gitlab.com/AlexTugarev/gp-test/issues/1",
+			WorkspaceRoot:  "/workspace/gp-test",
+			ExpectedBranch: "main",
+		},
+		{
+			Name:           "open tag",
+			ContextURL:     "gitlab.com/AlexTugarev/gp-test/merge_requests/2",
+			WorkspaceRoot:  "/workspace/gp-test",
+			ExpectedBranch: "HEAD",
+		},
+	}
+	runContextTests(t, tests)
+}
+
 func runContextTests(t *testing.T, tests []ContextTest) {
 	for _, test := range tests {
 		t.Run(test.ContextURL, func(t *testing.T) {