diff --git a/test/http1_spec.rb b/test/http1_spec.rb
index 9fcac3fa..a3ae89db 100644
--- a/test/http1_spec.rb
+++ b/test/http1_spec.rb
@@ -18,8 +18,76 @@ class HTTP1Test < Minitest::Spec
     assert response.body.to_s.bytesize == response.headers["content-length"].to_i, "didn't load the whole body"
   end
 
+  %w[post put patch delete].each do |meth|
+    define_method :"test_#{meth}_form_params" do
+      uri = build_uri("/#{meth}")
+      response = HTTPX.send(meth, uri, form: {"foo" => "bar"})
+      assert response.status == 200, "status is unexpected"
+      body = json_body(response)
+      assert body["headers"]["Content-Type"] == "application/x-www-form-urlencoded"
+      assert body.key?("form")
+      assert body["form"].key?("foo")
+      assert body["form"]["foo"] == "bar" 
+    end
+
+    define_method :"test_#{meth}_form_file_params" do
+      uri = build_uri("/#{meth}")
+      response = HTTPX.send(meth, uri, form: {image: HTTP::FormData::File.new(fixture_file_path)})
+      assert response.status == 200, "status is unexpected"
+      body = json_body(response)
+      assert body["headers"]["Content-Type"].start_with?("multipart/form-data")
+      assert body.key?("files")
+      assert body["files"].key?("image")
+    end
+
+    define_method :"test_#{meth}_json_params" do
+      uri = build_uri("/#{meth}")
+      response = HTTPX.send(meth, uri, json: {"foo" => "bar"})
+      assert response.status == 200, "status is unexpected"
+      body = json_body(response)
+      assert body["headers"]["Content-Type"].start_with?("application/json")
+      assert body.key?("json")
+      assert body["json"].key?("foo")
+      assert body["json"]["foo"] == "bar" 
+    end
+
+    define_method :"test_#{meth}_body_params" do
+      uri = build_uri("/#{meth}")
+      response = HTTPX.send(meth, uri, body: "data")
+      assert response.status == 200, "status is unexpected"
+      body = json_body(response)
+      assert body["headers"]["Content-Type"] == "application/octet-stream"
+      assert body.key?("data")
+      assert body["data"] == "data" 
+    end
+  end
+
+  def test_http_headers
+    uri = build_uri("/headers")
+    response = HTTPX.get(uri)
+    body = json_body(response)
+    assert body.key?("headers"), "no headers"
+    assert body["headers"]["accept"] == "*/*", "unexpected accept"
+
+    response = HTTPX.headers("accept" => "text/css").get(uri)
+    body = json_body(response)
+    assert body["headers"]["accept"] == "text/css", "accept should have been set at the client"
+  end
+
+  def test_http_user_agent
+    uri = build_uri("/user-agent")
+    response = HTTPX.get(uri)
+    body = json_body(response)
+    assert body.key?("user-agent"), "user agent wasn't there"
+    assert body["user-agent"] == "httpx.rb/#{HTTPX::VERSION}", "user agent is unexpected"
+  end
+
   private
 
+  def json_body(response)
+    JSON.parse(response.body.to_s)
+  end
+
   def build_uri(suffix="/")
     "#{origin}#{suffix || "/"}"
   end
@@ -27,4 +95,16 @@ class HTTP1Test < Minitest::Spec
   def origin
     "http://nghttp2.org/httpbin"
   end
+
+  def fixture
+    File.read(fixture_file_path, encoding: Encoding::BINARY)
+  end
+
+  def fixture_name
+    File.basename(fixture_file_path)
+  end
+
+  def fixture_file_path
+    File.join("test", "support", "fixtures", "image.jpg")
+  end
 end
diff --git a/test/support/fixtures/image.jpg b/test/support/fixtures/image.jpg
new file mode 100644
index 00000000..451062aa
Binary files /dev/null and b/test/support/fixtures/image.jpg differ