wast: improve Scanner test

wast/doc.go

@@ -2,5 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// Package wast provides an interface to Wagon for wast files.
+// Package wast provides functions to handle wast files.
+//
+// See https://webassembly.github.io/spec/core/text/
 package wast

wast/scanner_test.go

@@ -1,37 +1,66 @@
+// Copyright 2017 The go-interpreter Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package wast
 
 import (
-	"flag"
 	"fmt"
 	"testing"
 )
 
-var wastFile = flag.String("wast-file", "", "the wast file to test")
-
 func TestScanner(t *testing.T) {
-	if *wastFile == "" {
-		t.Errorf("error: no input file")
-	}
+	for _, fname := range []string{
+		//		"../exec/testdata/spec/address.wast",
+		"../exec/testdata/spec/block.wast",
+		"../exec/testdata/spec/break-drop.wast",
+		"../exec/testdata/spec/br_if.wast",
+		//		"../exec/testdata/spec/br_table.wast",
+		//		"../exec/testdata/spec/br.wast",
+		"../exec/testdata/spec/call_indirect.wast",
+		//		"../exec/testdata/spec/endianness.wast",
+		"../exec/testdata/spec/fac.wast",
+		"../exec/testdata/spec/forward.wast",
+		"../exec/testdata/spec/get_local.wast",
+		"../exec/testdata/spec/globals.wast",
+		"../exec/testdata/spec/if.wast",
+		//		"../exec/testdata/spec/loop.wast",
+		"../exec/testdata/spec/memory_redundancy.wast",
+		"../exec/testdata/spec/names.wast",
+		"../exec/testdata/spec/nop.wast",
+		"../exec/testdata/spec/resizing.wast",
+		//		"../exec/testdata/spec/return.wast",
+		"../exec/testdata/spec/select.wast",
+		"../exec/testdata/spec/switch.wast",
+		"../exec/testdata/spec/tee_local.wast",
+		"../exec/testdata/spec/traps_int_div.wast",
+		"../exec/testdata/spec/traps_int_rem.wast",
+		//		"../exec/testdata/spec/traps_mem.wast",
+		"../exec/testdata/spec/unwind.wast",
+	} {
+		t.Run(fname, func(t *testing.T) {
 
-	s := NewScanner(*wastFile)
-	if len(s.Errors) > 0 {
-		fmt.Println(s.Errors[0])
-		return
-	}
+			s := NewScanner(fname)
+			if len(s.Errors) > 0 {
+				fmt.Println(s.Errors[0])
+				return
+			}
 
-	var tok *Token
-	tok = s.Next()
-	for tok.Kind != EOF {
-		fmt.Printf("%d:%d %s\n", tok.Line, tok.Column, tok.String())
-		tok = s.Next()
-	}
-	fmt.Printf("%d:%d %s\n", tok.Line, tok.Column, tok.String())
+			var tok *Token
+			tok = s.Next()
+			for tok.Kind != EOF {
+				fmt.Printf("%d:%d %s\n", tok.Line, tok.Column, tok.String())
+				tok = s.Next()
+			}
+			fmt.Printf("%d:%d %s\n", tok.Line, tok.Column, tok.String())
 
-	for _, err := range s.Errors {
-		fmt.Print(err)
-	}
+			for _, err := range s.Errors {
+				fmt.Print(err)
+			}
 
-	if len(s.Errors) > 0 {
-		t.Errorf("wast: failed with %d errors", len(s.Errors))
+			if len(s.Errors) > 0 {
+				t.Errorf("wast: failed with %d errors", len(s.Errors))
+			}
+		})
 	}
 }

wast/write.go

@@ -2,11 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// Package wast implements a WebAssembly text format.
 package wast
 
-// See https://webassembly.github.io/spec/core/text/
-
 import (
 	"bufio"
 	"bytes"