Add API: media/uploadimg

add meida/uploadimg api.
fix png image path in media testcase.

lib/weixin_authorize/api/media.rb

@@ -68,6 +68,19 @@ module WeixinAuthorize
         http_post("#{media_base_url}/uploadvideo", video_msg)
       end
 
+      # 上传图文消息内的图片获取URL
+      # https://api.weixin.qq.com/cgi-bin/media/uploadimg?access_token=ACCESS_TOKEN
+      #
+      # return:
+      # {
+      #   "url":  "http://mmbiz.qpic.cn/mmbiz/gLO17UPS6FS2xsypf378iaNhWacZ1G1UplZYWEYfwvuU6Ont96b1roYs CNFwaRrSaKTPCUdBK9DgEHicsKwWCBRQ/0"
+      # }
+      def upload_image(image)
+        file = process_file(image)
+        upload_image_url = "#{media_base_url}/uploadimg"
+        http_post(upload_image_url, {media: file}, {type: 'image'}, 'file')
+      end
+
       private
 
         def media_base_url

spec/api/media_spec.rb

@@ -17,13 +17,25 @@ describe WeixinAuthorize::Api::Media do
   end
 
   let(:remote_png_path) do
-    "https://ruby-china-files.b0.upaiyun.com/user/big_avatar/273.jpg"
+    "https://ruby-china-files.b0.upaiyun.com/photo/5982eaaa64f467d9dbda03ad4f40ea27.png"
   end
 
   let(:remote_jpg_path) do
     "http://g.hiphotos.baidu.com/baike/c0%3Dbaike80%2C5%2C5%2C80%2C26/sign=ce55457e4334970a537e187df4a3baad/03087bf40ad162d99455ef4d13dfa9ec8b13632762d0ed14.jpg"
   end
 
+  it "can upload a jpg image and get url" do
+    response = $client.upload_image(image_jpg_file)
+    expect(response.code).to eq(WeixinAuthorize::OK_CODE)
+    expect(response.result.keys).to eq(["url"])
+  end
+
+  it "can upload a png image and get url" do
+    response = $client.upload_image(remote_png_path)
+    expect(response.code).to eq(WeixinAuthorize::OK_CODE)
+    expect(response.result.keys).to eq(["url"])
+  end
+
   it "can upload a jpg File image" do
     response = $client.upload_media(image_jpg_file, "image")
     expect(response.code).to eq(WeixinAuthorize::OK_CODE)