cmd/go: fixup for parsing SCP-like addresses

This is a fixup change for commit 5cd29448
that added parsing of SCP-like addresses. To get the expected output
from (*url.URL).String(), Path needs to be set, not RawPath.

Add a test for this, since it has already regressed multiple times.

Updates #11457.

Change-Id: I806f5abbd3cf65e5bdcef01aab872caa8a5b8891
Reviewed-on: https://go-review.googlesource.com/23447
Run-TryBot: Andrew Gerrand <adg@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Andrew Gerrand <adg@golang.org>

src/cmd/go/go_test.go

@@ -1151,7 +1151,7 @@ func TestImportCommentConflict(t *testing.T) {
 	tg.grepStderr("found import comments", "go build did not mention comment conflict")
 }
 
-// cmd/go: custom import path checking should not apply to github.com/xxx/yyy.
+// cmd/go: custom import path checking should not apply to Go packages without import comment.
 func TestIssue10952(t *testing.T) {
 	testenv.MustHaveExternalNetwork(t)
 	if _, err := exec.LookPath("git"); err != nil {
@@ -1170,6 +1170,34 @@ func TestIssue10952(t *testing.T) {
 	tg.run("get", "-d", "-u", importPath)
 }
 
+// Test git clone URL that uses SCP-like syntax and custom import path checking.
+func TestIssue11457(t *testing.T) {
+	testenv.MustHaveExternalNetwork(t)
+	if _, err := exec.LookPath("git"); err != nil {
+		t.Skip("skipping because git binary not found")
+	}
+
+	tg := testgo(t)
+	defer tg.cleanup()
+	tg.parallel()
+	tg.tempDir("src")
+	tg.setenv("GOPATH", tg.path("."))
+	const importPath = "github.com/rsc/go-get-issue-11457"
+	tg.run("get", "-d", "-u", importPath)
+	repoDir := tg.path("src/" + importPath)
+	tg.runGit(repoDir, "remote", "set-url", "origin", "git@github.com:rsc/go-get-issue-11457")
+
+	// At this time, custom import path checking compares remotes verbatim (rather than
+	// just the host and path, skipping scheme and user), so we expect go get -u to fail.
+	// However, the goal of this test is to verify that gitRemoteRepo correctly parsed
+	// the SCP-like syntax, and we expect it to appear in the error message.
+	tg.runFail("get", "-d", "-u", importPath)
+	want := " is checked out from ssh://git@github.com/rsc/go-get-issue-11457"
+	if !strings.HasSuffix(strings.TrimSpace(tg.getStderr()), want) {
+		t.Error("expected clone URL to appear in stderr")
+	}
+}
+
 func TestGetGitDefaultBranch(t *testing.T) {
 	testenv.MustHaveExternalNetwork(t)
 	if _, err := exec.LookPath("git"); err != nil {
@@ -2814,7 +2842,7 @@ func TestBinaryOnlyPackages(t *testing.T) {
 	tg.grepStderr("no buildable Go source files", "did not complain about missing sources")
 
 	tg.tempFile("src/p1/missing.go", `//go:binary-only-package
-	
+
 		package p1
 		func G()
 	`)

src/cmd/go/vcs.go

@@ -171,10 +171,10 @@ func gitRemoteRepo(vcsGit *vcsCmd, rootDir string) (remoteRepo string, err error
 		// Eg, "git@github.com:user/repo" becomes
 		// "ssh://git@github.com/user/repo".
 		repoURL = &url.URL{
-			Scheme:  "ssh",
-			User:    url.User(m[1]),
-			Host:    m[2],
-			RawPath: m[3],
+			Scheme: "ssh",
+			User:   url.User(m[1]),
+			Host:   m[2],
+			Path:   m[3],
 		}
 	} else {
 		repoURL, err = url.Parse(out)