internal/lsp,internal/lsp/cmd: skip tests on android

Change-Id: Idd9ddd32742a9f85096b71509511492b54538190
Reviewed-on: https://go-review.googlesource.com/c/tools/+/167818
Run-TryBot: Elias Naur <mail@eliasnaur.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>

internal/lsp/cmd/definition_test.go

@@ -14,6 +14,7 @@ import (
 	"os/exec"
 	"path/filepath"
 	"regexp"
+	"runtime"
 	"strconv"
 	"strings"
 	"testing"
@@ -27,6 +28,9 @@ import (
 var verifyGuru = flag.Bool("verify-guru", false, "Check that the guru compatability matches")
 
 func TestDefinitionHelpExample(t *testing.T) {
+	if runtime.GOOS == "android" {
+		t.Skip("not all source files are available on android")
+	}
 	dir, err := os.Getwd()
 	if err != nil {
 		t.Errorf("could not get wd: %v", err)

internal/lsp/lsp_test.go

@@ -13,6 +13,7 @@ import (
 	"go/token"
 	"os/exec"
 	"path/filepath"
+	"runtime"
 	"strings"
 	"testing"
 
@@ -118,6 +119,14 @@ func testLSP(t *testing.T, exporter packagestest.Exporter) {
 	})
 
 	t.Run("Format", func(t *testing.T) {
+		if _, err := exec.LookPath("gofmt"); err != nil {
+			switch runtime.GOOS {
+			case "android":
+				t.Skip("gofmt is not installed")
+			default:
+				t.Fatal(err)
+			}
+		}
 		t.Helper()
 		if goVersion111 { // TODO(rstambler): Remove this when we no longer support Go 1.10.
 			if len(expectedFormat) != expectedFormatCount {