add support for listing emoji

github/misc.go

@@ -56,8 +56,26 @@ func (c *Client) Markdown(text string, opt *MarkdownOptions) (string, *Response,
 	buf := new(bytes.Buffer)
 	resp, err := c.Do(req, buf)
 	if err != nil {
-		return "", resp, nil
+		return "", resp, err
 	}
 
 	return buf.String(), resp, nil
 }
+
+// ListEmojis returns the emojis available to use on GitHub.
+//
+// GitHub API docs: https://developer.github.com/v3/emojis/
+func (c *Client) ListEmojis() (map[string]string, *Response, error) {
+	req, err := c.NewRequest("GET", "/emojis", nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var emoji map[string]string
+	resp, err := c.Do(req, &emoji)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return emoji, resp, nil
+}

github/misc_test.go

@@ -45,3 +45,23 @@ func TestMarkdown(t *testing.T) {
 		t.Errorf("Markdown returned %+v, want %+v", md, want)
 	}
 }
+
+func TestListEmojis(t *testing.T) {
+	setup()
+	defer teardown()
+
+	mux.HandleFunc("/emojis", func(w http.ResponseWriter, r *http.Request) {
+		testMethod(t, r, "GET")
+		fmt.Fprint(w, `{"+1": "+1.png"}`)
+	})
+
+	emoji, _, err := client.ListEmojis()
+	if err != nil {
+		t.Errorf("ListEmojis returned error: %v", err)
+	}
+
+	want := map[string]string{"+1": "+1.png"}
+	if !reflect.DeepEqual(want, emoji) {
+		t.Errorf("ListEmojis returned %+v, want %+v", emoji, want)
+	}
+}

tests/integration/misc_test.go

@@ -0,0 +1,23 @@
+// Copyright 2014 The go-github 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 tests
+
+import "testing"
+
+func TestEmojis(t *testing.T) {
+	emoji, _, err := client.ListEmojis()
+	if err != nil {
+		t.Fatalf("ListEmojis returned error: %v", err)
+	}
+
+	if len(emoji) == 0 {
+		t.Errorf("ListEmojis returned no emojis")
+	}
+
+	if _, ok := emoji["+1"]; !ok {
+		t.Errorf("ListEmojis missing '+1' emoji")
+	}
+}