reflect: add FieldByNameFunc

xml: add support for XML marshalling embedded structs.

R=rsc
CC=golang-dev
http://codereview.appspot.com/837042

Committer: Russ Cox <rsc@golang.org>

1 files changed, 124 insertions, 0 deletions

diff --git a/src/pkg/xml/embed_test.go b/src/pkg/xml/embed_test.go
new file mode 100644
index 000000000..abfe781ac
--- /dev/null
+++ b/src/pkg/xml/embed_test.go
@@ -0,0 +1,124 @@
+// Copyright 2010 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 xml
+
+import "testing"
+
+type C struct {
+	Name string
+	Open bool
+}
+
+type A struct {
+	XMLName Name "http://domain a"
+	C
+	B      B
+	FieldA string
+}
+
+type B struct {
+	XMLName Name "b"
+	C
+	FieldB string
+}
+
+const _1a = `
+<?xml version="1.0" encoding="UTF-8"?>
+<a xmlns="http://domain">
+  <name>KmlFile</name>
+  <open>1</open>
+  <b>
+    <name>Absolute</name>
+    <open>0</open>
+    <fieldb>bar</fieldb>
+  </b>
+  <fielda>foo</fielda>
+</a>
+`
+
+// Tests that embedded structs are marshalled.
+func TestEmbedded1(t *testing.T) {
+	var a A
+	if e := Unmarshal(StringReader(_1a), &a); e != nil {
+		t.Fatalf("Unmarshal: %s", e)
+	}
+	if a.FieldA != "foo" {
+		t.Fatalf("Unmarshal: expected 'foo' but found '%s'", a.FieldA)
+	}
+	if a.Name != "KmlFile" {
+		t.Fatalf("Unmarshal: expected 'KmlFile' but found '%s'", a.Name)
+	}
+	if !a.Open {
+		t.Fatal("Unmarshal: expected 'true' but found otherwise")
+	}
+	if a.B.FieldB != "bar" {
+		t.Fatalf("Unmarshal: expected 'bar' but found '%s'", a.B.FieldB)
+	}
+	if a.B.Name != "Absolute" {
+		t.Fatalf("Unmarshal: expected 'Absolute' but found '%s'", a.B.Name)
+	}
+	if a.B.Open {
+		t.Fatal("Unmarshal: expected 'false' but found otherwise")
+	}
+}
+
+type A2 struct {
+	XMLName Name "http://domain a"
+	XY      string
+	Xy      string
+}
+
+const _2a = `
+<?xml version="1.0" encoding="UTF-8"?>
+<a xmlns="http://domain">
+  <xy>foo</xy>
+</a>
+`
+
+// Tests that conflicting field names get excluded.
+func TestEmbedded2(t *testing.T) {
+	var a A2
+	if e := Unmarshal(StringReader(_2a), &a); e != nil {
+		t.Fatalf("Unmarshal: %s", e)
+	}
+	if a.XY != "" {
+		t.Fatalf("Unmarshal: expected empty string but found '%s'", a.XY)
+	}
+	if a.Xy != "" {
+		t.Fatalf("Unmarshal: expected empty string but found '%s'", a.Xy)
+	}
+}
+
+type A3 struct {
+	XMLName Name "http://domain a"
+	xy      string
+}
+
+// Tests that private fields are not set.
+func TestEmbedded3(t *testing.T) {
+	var a A3
+	if e := Unmarshal(StringReader(_2a), &a); e != nil {
+		t.Fatalf("Unmarshal: %s", e)
+	}
+	if a.xy != "" {
+		t.Fatalf("Unmarshal: expected empty string but found '%s'", a.xy)
+	}
+}
+
+type A4 struct {
+	XMLName Name "http://domain a"
+	Any     string
+}
+
+// Tests that private fields are not set.
+func TestEmbedded4(t *testing.T) {
+	var a A4
+	if e := Unmarshal(StringReader(_2a), &a); e != nil {
+		t.Fatalf("Unmarshal: %s", e)
+	}
+	if a.Any != "foo" {
+		t.Fatalf("Unmarshal: expected 'foo' but found '%s'", a.Any)
+	}
+}