1 files changed, 34 insertions, 2 deletions
diff --git a/libgo/go/text/template/parse/parse_test.go b/libgo/go/text/template/parse/parse_test.go
index 13c5548abbf..b2e788238d3 100644
--- a/libgo/go/text/template/parse/parse_test.go
+++ b/libgo/go/text/template/parse/parse_test.go
@@ -201,6 +201,10 @@ var parseTests = []parseTest{
 		`{{range .X | .M}}"true"{{else}}"false"{{end}}`},
 	{"range []int", "{{range .SI}}{{.}}{{end}}", noError,
 		`{{range .SI}}{{.}}{{end}}`},
+	{"range 1 var", "{{range $x := .SI}}{{.}}{{end}}", noError,
+		`{{range $x := .SI}}{{.}}{{end}}`},
+	{"range 2 vars", "{{range $x, $y := .SI}}{{.}}{{end}}", noError,
+		`{{range $x, $y := .SI}}{{.}}{{end}}`},
 	{"constants", "{{range .SI 1 -3.2i true false 'a'}}{{end}}", noError,
 		`{{range .SI 1 -3.2i true false 'a'}}{{end}}`},
 	{"template", "{{template `x`}}", noError,
@@ -226,13 +230,24 @@ var parseTests = []parseTest{
 	{"invalid punctuation", "{{printf 3, 4}}", hasError, ""},
 	{"multidecl outside range", "{{with $v, $u := 3}}{{end}}", hasError, ""},
 	{"too many decls in range", "{{range $u, $v, $w := 3}}{{end}}", hasError, ""},
+	// Equals (and other chars) do not assignments make (yet).
+	{"bug0a", "{{$x := 0}}{{$x}}", noError, "{{$x := 0}}{{$x}}"},
+	{"bug0b", "{{$x = 1}}{{$x}}", hasError, ""},
+	{"bug0c", "{{$x ! 2}}{{$x}}", hasError, ""},
+	{"bug0d", "{{$x % 3}}{{$x}}", hasError, ""},
+	// Check the parse fails for := rather than comma.
+	{"bug0e", "{{range $x := $y := 3}}{{end}}", hasError, ""},
+	// Another bug: variable read must ignore following punctuation.
+	{"bug1a", "{{$x:=.}}{{$x!2}}", hasError, ""},                     // ! is just illegal here.
+	{"bug1b", "{{$x:=.}}{{$x+2}}", hasError, ""},                     // $x+2 should not parse as ($x) (+2).
+	{"bug1c", "{{$x:=.}}{{$x +2}}", noError, "{{$x := .}}{{$x +2}}"}, // It's OK with a space.
 }
 
 var builtins = map[string]interface{}{
 	"printf": fmt.Sprintf,
 }
 
-func TestParse(t *testing.T) {
+func testParse(doCopy bool, t *testing.T) {
 	for _, test := range parseTests {
 		tmpl, err := New(test.name).Parse(test.input, "", "", make(map[string]*Tree), builtins)
 		switch {
@@ -249,13 +264,27 @@ func TestParse(t *testing.T) {
 			}
 			continue
 		}
-		result := tmpl.Root.String()
+		var result string
+		if doCopy {
+			result = tmpl.Root.Copy().String()
+		} else {
+			result = tmpl.Root.String()
+		}
 		if result != test.result {
 			t.Errorf("%s=(%q): got\n\t%v\nexpected\n\t%v", test.name, test.input, result, test.result)
 		}
 	}
 }
 
+func TestParse(t *testing.T) {
+	testParse(false, t)
+}
+
+// Same as TestParse, but we copy the node first
+func TestParseCopy(t *testing.T) {
+	testParse(true, t)
+}
+
 type isEmptyTest struct {
 	name  string
 	input string
@@ -273,6 +302,9 @@ var isEmptyTests = []isEmptyTest{
 }
 
 func TestIsEmpty(t *testing.T) {
+	if !IsEmptyTree(nil) {
+		t.Errorf("nil tree is not empty")
+	}
 	for _, test := range isEmptyTests {
 		tree, err := New("root").Parse(test.input, "", "", make(map[string]*Tree), nil)
 		if err != nil {