mime: move examples to external test file

Fixes #11257

Change-Id: I3f75db47b0f8e877d81e3c2dcea01ff747b47685
Reviewed-on: https://go-review.googlesource.com/13779
Reviewed-by: Brad Fitzpatrick <[email protected]>

Author: adg

src/mime/encodedword_test.go

@@ -5,100 +5,13 @@
 package mime
 
 import (
-	"bytes"
 	"errors"
-	"fmt"
 	"io"
 	"io/ioutil"
 	"strings"
 	"testing"
 )
 
-func ExampleWordEncoder_Encode() {
-	fmt.Println(QEncoding.Encode("utf-8", "¡Hola, señor!"))
-	fmt.Println(QEncoding.Encode("utf-8", "Hello!"))
-	fmt.Println(BEncoding.Encode("UTF-8", "¡Hola, señor!"))
-	fmt.Println(QEncoding.Encode("ISO-8859-1", "Caf\xE9"))
-	// Output:
-	// =?utf-8?q?=C2=A1Hola,_se=C3=B1or!?=
-	// Hello!
-	// =?UTF-8?b?wqFIb2xhLCBzZcOxb3Ih?=
-	// =?ISO-8859-1?q?Caf=E9?=
-}
-
-func ExampleWordDecoder_Decode() {
-	dec := new(WordDecoder)
-	header, err := dec.Decode("=?utf-8?q?=C2=A1Hola,_se=C3=B1or!?=")
-	if err != nil {
-		panic(err)
-	}
-	fmt.Println(header)
-
-	dec.CharsetReader = func(charset string, input io.Reader) (io.Reader, error) {
-		switch charset {
-		case "x-case":
-			// Fake character set for example.
-			// Real use would integrate with packages such
-			// as code.google.com/p/go-charset
-			content, err := ioutil.ReadAll(input)
-			if err != nil {
-				return nil, err
-			}
-			return bytes.NewReader(bytes.ToUpper(content)), nil
-		default:
-			return nil, fmt.Errorf("unhandled charset %q", charset)
-		}
-	}
-	header, err = dec.Decode("=?x-case?q?hello!?=")
-	if err != nil {
-		panic(err)
-	}
-	fmt.Println(header)
-	// Output:
-	// ¡Hola, señor!
-	// HELLO!
-}
-
-func ExampleWordDecoder_DecodeHeader() {
-	dec := new(WordDecoder)
-	header, err := dec.DecodeHeader("=?utf-8?q?=C3=89ric?= <[email protected]>, =?utf-8?q?Ana=C3=AFs?= <[email protected]>")
-	if err != nil {
-		panic(err)
-	}
-	fmt.Println(header)
-
-	header, err = dec.DecodeHeader("=?utf-8?q?=C2=A1Hola,?= =?utf-8?q?_se=C3=B1or!?=")
-	if err != nil {
-		panic(err)
-	}
-	fmt.Println(header)
-
-	dec.CharsetReader = func(charset string, input io.Reader) (io.Reader, error) {
-		switch charset {
-		case "x-case":
-			// Fake character set for example.
-			// Real use would integrate with packages such
-			// as code.google.com/p/go-charset
-			content, err := ioutil.ReadAll(input)
-			if err != nil {
-				return nil, err
-			}
-			return bytes.NewReader(bytes.ToUpper(content)), nil
-		default:
-			return nil, fmt.Errorf("unhandled charset %q", charset)
-		}
-	}
-	header, err = dec.DecodeHeader("=?x-case?q?hello_?= =?x-case?q?world!?=")
-	if err != nil {
-		panic(err)
-	}
-	fmt.Println(header)
-	// Output:
-	// Éric <[email protected]>, Anaïs <[email protected]>
-	// ¡Hola, señor!
-	// HELLO WORLD!
-}
-
 func TestEncodeWord(t *testing.T) {
 	utf8, iso88591 := "utf-8", "iso-8859-1"
 	tests := []struct {

src/mime/example_test.go

@@ -0,0 +1,98 @@
+// Copyright 2015 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 mime_test
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"mime"
+)
+
+func ExampleWordEncoder_Encode() {
+	fmt.Println(mime.QEncoding.Encode("utf-8", "¡Hola, señor!"))
+	fmt.Println(mime.QEncoding.Encode("utf-8", "Hello!"))
+	fmt.Println(mime.BEncoding.Encode("UTF-8", "¡Hola, señor!"))
+	fmt.Println(mime.QEncoding.Encode("ISO-8859-1", "Caf\xE9"))
+	// Output:
+	// =?utf-8?q?=C2=A1Hola,_se=C3=B1or!?=
+	// Hello!
+	// =?UTF-8?b?wqFIb2xhLCBzZcOxb3Ih?=
+	// =?ISO-8859-1?q?Caf=E9?=
+}
+
+func ExampleWordDecoder_Decode() {
+	dec := new(mime.WordDecoder)
+	header, err := dec.Decode("=?utf-8?q?=C2=A1Hola,_se=C3=B1or!?=")
+	if err != nil {
+		panic(err)
+	}
+	fmt.Println(header)
+
+	dec.CharsetReader = func(charset string, input io.Reader) (io.Reader, error) {
+		switch charset {
+		case "x-case":
+			// Fake character set for example.
+			// Real use would integrate with packages such
+			// as code.google.com/p/go-charset
+			content, err := ioutil.ReadAll(input)
+			if err != nil {
+				return nil, err
+			}
+			return bytes.NewReader(bytes.ToUpper(content)), nil
+		default:
+			return nil, fmt.Errorf("unhandled charset %q", charset)
+		}
+	}
+	header, err = dec.Decode("=?x-case?q?hello!?=")
+	if err != nil {
+		panic(err)
+	}
+	fmt.Println(header)
+	// Output:
+	// ¡Hola, señor!
+	// HELLO!
+}
+
+func ExampleWordDecoder_DecodeHeader() {
+	dec := new(mime.WordDecoder)
+	header, err := dec.DecodeHeader("=?utf-8?q?=C3=89ric?= <[email protected]>, =?utf-8?q?Ana=C3=AFs?= <[email protected]>")
+	if err != nil {
+		panic(err)
+	}
+	fmt.Println(header)
+
+	header, err = dec.DecodeHeader("=?utf-8?q?=C2=A1Hola,?= =?utf-8?q?_se=C3=B1or!?=")
+	if err != nil {
+		panic(err)
+	}
+	fmt.Println(header)
+
+	dec.CharsetReader = func(charset string, input io.Reader) (io.Reader, error) {
+		switch charset {
+		case "x-case":
+			// Fake character set for example.
+			// Real use would integrate with packages such
+			// as code.google.com/p/go-charset
+			content, err := ioutil.ReadAll(input)
+			if err != nil {
+				return nil, err
+			}
+			return bytes.NewReader(bytes.ToUpper(content)), nil
+		default:
+			return nil, fmt.Errorf("unhandled charset %q", charset)
+		}
+	}
+	header, err = dec.DecodeHeader("=?x-case?q?hello_?= =?x-case?q?world!?=")
+	if err != nil {
+		panic(err)
+	}
+	fmt.Println(header)
+	// Output:
+	// Éric <[email protected]>, Anaïs <[email protected]>
+	// ¡Hola, señor!
+	// HELLO WORLD!
+}