[dev.typeparams] cmd/compile/internal/syntax: add type parameter tests

The file endings are not .go so that gofmt leaves these files alone.
They are also not .src to distinguish them from regular go source tests.

Change-Id: I741f5c037bad1ea9d6f7fda3673487d0be631350
Reviewed-on: https://go-review.googlesource.com/c/go/+/261219
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>

1 files changed, 19 insertions, 2 deletions

diff --git a/src/cmd/compile/internal/syntax/parser_test.go b/src/cmd/compile/internal/syntax/parser_test.go
index f1c5433b40..e270879739 100644
--- a/src/cmd/compile/internal/syntax/parser_test.go
+++ b/src/cmd/compile/internal/syntax/parser_test.go
@@ -29,7 +29,24 @@ func TestParse(t *testing.T) {
 	ParseFile(*src_, func(err error) { t.Error(err) }, nil, 0)
 }
 
-func TestStdLib(t *testing.T) {
+func TestParseGo2(t *testing.T) {
+	dir := filepath.Join(testdata, "go2")
+	list, err := ioutil.ReadDir(dir)
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, fi := range list {
+		name := fi.Name()
+		if !fi.IsDir() && !strings.HasPrefix(name, ".") {
+			ParseFile(filepath.Join(dir, name), func(err error) { t.Error(err) }, nil, AllowGenerics)
+		}
+	}
+}
+
+func TestStdLib(t *testing.T)        { testStdLib(t, 0) }
+func TestStdLibGeneric(t *testing.T) { testStdLib(t, AllowGenerics) }
+
+func testStdLib(t *testing.T, mode Mode) {
 	if testing.Short() {
 		t.Skip("skipping test in short mode")
 	}
@@ -68,7 +85,7 @@ func TestStdLib(t *testing.T) {
 				if debug {
 					fmt.Printf("parsing %s\n", filename)
 				}
-				ast, err := ParseFile(filename, nil, nil, 0)
+				ast, err := ParseFile(filename, nil, nil, mode)
 				if err != nil {
 					t.Error(err)
 					return