WIP: Add test cases for jsonrpc

tests/server.features/jsonrpc.feature

@@ -0,0 +1,42 @@
+Feature: jsonrpc module
+  jsonrpc is a module of language-server.
+
+  Scenario: Test ReadWriter
+    Given the string
+    When I write it to ReadWriter
+    Then it should read from ReadWriter
+
+  Scenario: Test ReadWriter
+    Given the string
+    When I write it to ReadWriter
+    Then it should readline from ReadWriter
+
+  Scenario: Test TCPReadWriter
+    Given the string
+    When I write it to TCPReadWriter
+    Then it should read from TCPReadWriter
+
+  Scenario: Test TCPReadWriter
+    Given the string
+    When I write it to TCPReadWriter
+    Then it should readline from TCPReadWriter
+
+  Scenario: Test read_message without id
+    Given the JSONRPC2Connection instance
+    When I write a message to the JSONRPC2Connection without id
+    Then it should return it from JSONRPC2Connection
+
+  Scenario: Test read_message with id
+    Given the JSONRPC2Connection instance
+    When I write a message to the JSONRPC2Connection with id
+    Then it should return it from JSONRPC2Connection with id
+
+  Scenario: Test write_response with id
+    Given the JSONRPC2Connection instance
+    When I write a message to the JSONRPC2Connection with id
+    Then it should get it
+
+  Scenario: Test send_notification
+    Given the JSONRPC2Connection instance
+    When I write a notification to the JSONRPC2Connection
+    Then it should get it

tests/server.features/steps/jsonrpc_steps.py

@@ -0,0 +1,85 @@
+# -*- coding: UTF-8 -*-
+
+# @mark.steps
+# ----------------------------------------------------------------------------
+# STEPS:
+# ----------------------------------------------------------------------------
+import tempfile
+import json
+from behave import given, when, then
+from coala_langserver.jsonrpc import ReadWriter, TCPReadWriter, JSONRPC2Connection
+
+
+@given('the string')
+def step_impl(context):
+    context.str = 'test-cases'
+
+
+@when('I write it to ReadWriter')
+def step_impl(context):
+    context.f = tempfile.TemporaryFile(mode='w+')
+    context.readWriter = ReadWriter(context.f, context.f)
+    context.readWriter.write(context.str)
+
+
+@then('it should read from ReadWriter')
+def step_impl(context):
+    assert context.readWriter.read(len(context.str)) is not ''
+    context.f.close()
+
+
+@then('it should readline from ReadWriter')
+def step_impl(context):
+    assert context.readWriter.readline() is not ''
+
+
+@when('I write it to TCPReadWriter')
+def step_impl(context):
+    context.f = tempfile.TemporaryFile()
+    context.readWriter = TCPReadWriter(context.f, context.f)
+    context.readWriter.write(context.str)
+
+
+@then('it should read from TCPReadWriter')
+def step_impl(context):
+    assert context.readWriter.read(len(context.str)) is not ''
+    context.f.close()
+
+
+@then('it should readline from TCPReadWriter')
+def step_impl(context):
+    assert context.readWriter.readline() is not ''
+
+
+@given('the JSONRPC2Connection instance')
+def step_impl(context):
+    context.f = tempfile.TemporaryFile()
+    context.jsonConn = JSONRPC2Connection(conn=TCPReadWriter(context.f, context.f))
+
+
+@when('I write a message to the JSONRPC2Connection without id')
+def step_impl(context):
+    context.id = 10
+    mockMethod = 'method'
+    mockParams = {
+        'mock': 'mock'
+    }
+    body = {
+        'jsonrpc': '2.0',
+        'id': context.id,
+        'method': mockMethod,
+        'params': mockParams,
+    }
+    body = json.dumps(body, separators=(',', ':'))
+    content_length = len(body)
+    request = (
+        'Content-Length: {}\r\n'
+        'Content-Type: application/vscode-jsonrpc; charset=utf8\r\n\r\n'
+        '{}'.format(content_length, body))
+    context.jsonConn.conn.write(request)
+
+
+@then('it should return it from JSONRPC2Connection')
+def step_impl(context):
+    assert context.jsonConn.read_message(context.id) is not None
+    context.f.close()