add page test

spec/page_spec.cr

@@ -0,0 +1,23 @@
+require "./spec_helper"
+require "webmock"
+WebMock.stub(:get, "example.com")
+WebMock.stub(:get, "fail_example.com").to_return(status: 500)
+WebMock.stub(:get, "body_example.com").to_return(body: "hello")
+
+describe "Mechanize Page test" do
+  it "return status code of request" do
+    agent = Mechanize.new
+    page = agent.get("http://example.com/")
+    page.code.should eq 200
+    page = agent.get("http://fail_example.com")
+    page.code.should eq 500
+  end
+
+  it "return request body" do
+    agent = Mechanize.new
+    page = agent.get("http://example.com/")
+    page.body.should eq ""
+    page = agent.get("http://body_example.com")
+    page.body.should eq "hello"
+  end
+end