use git checkout instead of switch

Signed-off-by: Michael Hoang <mhoang@redhat.com>

pkg/git/git.go

@@ -139,7 +139,7 @@ func (g *GitUrl) CloneGitRepo(destDir string) error {
 	}
 
 	if g.Revision != "" {
-		_, err := execute(destDir, "git", "switch", "--detach", "origin/"+g.Revision)
+		_, err := execute(destDir, "git", "checkout", g.Revision)
 		if err != nil {
 			err = os.RemoveAll(destDir)
 			if err != nil {

pkg/git/git_test.go

@@ -400,8 +400,6 @@ func Test_IsPublic(t *testing.T) {
 }
 
 func Test_CloneGitRepo(t *testing.T) {
-	tempInvalidDir := t.TempDir()
-
 	invalidGitUrl := GitUrl{
 		Protocol: "",
 		Host:     "",
@@ -419,9 +417,42 @@ func Test_CloneGitRepo(t *testing.T) {
 		token:    "fake-github-token",
 	}
 
+	validGitHubRepoBranch := GitUrl{
+		Protocol: "https",
+		Host:     "github.com",
+		Owner:    "devfile-resources",
+		Repo:     "python-src-docker",
+		Revision: "testbranch",
+	}
+
+	validGitHubRepoCommit := GitUrl{
+		Protocol: "https",
+		Host:     "github.com",
+		Owner:    "devfile-resources",
+		Repo:     "python-src-docker",
+		Revision: "bb00eeffc638f2657a0c752ef934a9b6dc87e2c1",
+	}
+
+	validGitHubRepoInvalidCommit := GitUrl{
+		Protocol: "https",
+		Host:     "github.com",
+		Owner:    "devfile-resources",
+		Repo:     "python-src-docker",
+		Revision: "lkjatbasdlkfja0c752ef93faskj4bowdf1",
+	}
+
+	validGitHubRepoTag := GitUrl{
+		Protocol: "https",
+		Host:     "github.com",
+		Owner:    "OpenLiberty",
+		Repo:     "devfile-stack",
+		Revision: "maven-0.7.0",
+	}
+
 	privateRepoBadTokenErr := "failed to clone repo with token*"
 	publicRepoInvalidUrlErr := "failed to clone repo without a token"
 	missingDestDirErr := "failed to clone repo, destination directory*"
+	switchRevisionErr := "failed to switch repo to revision*"
 
 	tests := []struct {
 		name    string
@@ -438,19 +469,43 @@ func Test_CloneGitRepo(t *testing.T) {
 		{
 			name:    "should fail with invalid git url",
 			gitUrl:  invalidGitUrl,
-			destDir: tempInvalidDir,
+			destDir: "",
 			wantErr: publicRepoInvalidUrlErr,
 		},
 		{
 			name:    "should fail to clone invalid private git url with a bad token",
 			gitUrl:  invalidPrivateGitHubRepo,
-			destDir: tempInvalidDir,
+			destDir: "",
 			wantErr: privateRepoBadTokenErr,
 		},
+		{
+			name:    "should clone valid git url with branch revision",
+			gitUrl:  validGitHubRepoBranch,
+			destDir: "",
+		},
+		{
+			name:    "should clone valid git url with commit revision",
+			gitUrl:  validGitHubRepoCommit,
+			destDir: "",
+		},
+		{
+			name:    "should clone valid git url with tag revision",
+			gitUrl:  validGitHubRepoTag,
+			destDir: "",
+		},
+		{
+			name:    "should fail to clone valid git url with invalid commit",
+			gitUrl:  validGitHubRepoInvalidCommit,
+			destDir: "",
+			wantErr: switchRevisionErr,
+		},
 	}
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
+			if tt.destDir == "" {
+				tt.destDir = t.TempDir()
+			}
 			err := tt.gitUrl.CloneGitRepo(tt.destDir)
 			if (err != nil) != (tt.wantErr != "") {
 				t.Errorf("Unxpected error: %t, want: %v", err, tt.wantErr)

pkg/git/mock.go

@@ -20,7 +20,6 @@ import (
 	"net/url"
 	"os"
 	"path/filepath"
-	"strings"
 )
 
 type MockGitUrl struct {
@@ -70,8 +69,8 @@ var mockExecute = func(baseDir string, cmd CommandType, args ...string) ([]byte,
 			return []byte(""), nil
 		}
 
-		if len(args) > 0 && args[0] == "switch" {
-			revision := strings.TrimPrefix(args[2], "origin/")
+		if len(args) > 0 && args[0] == "checkout" {
+			revision := args[1]
 			if revision != "invalid-revision" {
 				resourceFile, err := os.OpenFile(filepath.Clean(baseDir)+"/resource.file", os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0600)
 				if err != nil {
@@ -122,7 +121,7 @@ func (m *MockGitUrl) CloneGitRepo(destDir string) error {
 	}
 
 	if m.Revision != "" {
-		_, err := mockExecute(destDir, "git", "switch", "--detach", "origin/"+m.Revision)
+		_, err := mockExecute(destDir, "git", "checkout", m.Revision)
 		if err != nil {
 			return fmt.Errorf("failed to switch repo to revision. repo dir: %v, revision: %v", destDir, m.Revision)
 		}