libgo: Update to weekly.2011-11-02.

From-SVN: r181964

2 files changed, 53 insertions, 0 deletions

diff --git a/libgo/go/errors/errors.go b/libgo/go/errors/errors.go
new file mode 100644
index 00000000000..3085a7962c2
--- /dev/null
+++ b/libgo/go/errors/errors.go
@@ -0,0 +1,20 @@
+// Copyright 2011 The Go 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 errors implements functions to manipulate errors.
+package errors
+
+// New returns an error that formats as the given text.
+func New(text string) error {
+	return &errorString{text}
+}
+
+// errorString is a trivial implementation of error.
+type errorString struct {
+	s string
+}
+
+func (e *errorString) Error() string {
+	return e.s
+}
diff --git a/libgo/go/errors/errors_test.go b/libgo/go/errors/errors_test.go
new file mode 100644
index 00000000000..c537eeb6251
--- /dev/null
+++ b/libgo/go/errors/errors_test.go
@@ -0,0 +1,33 @@
+// Copyright 2011 The Go 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 errors_test
+
+import (
+	. "errors"
+	"testing"
+)
+
+func TestNewEqual(t *testing.T) {
+	// Different allocations should not be equal.
+	if New("abc") == New("abc") {
+		t.Errorf(`New("abc") == New("abc")`)
+	}
+	if New("abc") == New("xyz") {
+		t.Errorf(`New("abc") == New("xyz")`)
+	}
+
+	// Same allocation should be equal to itself (not crash).
+	err := New("jkl")
+	if err != err {
+		t.Errorf(`err != err`)
+	}
+}
+
+func TestErrorMethod(t *testing.T) {
+	err := New("abc")
+	if err.Error() != "abc" {
+		t.Errorf(`New("abc").Error() = %q, want %q`, err.Error(), "abc")
+	}
+}