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import imp
import optparse
import sys
import time
import unittest

from webkitpy.common.host_mock import MockHost
from webkitpy.common.system.filesystem import FileSystem
from webkitpy.port import Port
from webkitpy.tool.mocktool import MockOptions

from webkitpy.layout_tests.servers.http_server_base import ServerError
from webkitpy.layout_tests.servers.web_platform_test_server import WebPlatformTestServer


class TestWebPlatformTestServer(unittest.TestCase):
    def test_previously_spawned_instance(self):
        host = MockHost()
        options = optparse.Values()
        options.ensure_value("results_directory", "/mock/output_dir")
        port = Port(host, "test", options)
        server = WebPlatformTestServer(port, "wpttest", "/mock/output_dir/pid.txt")
        server._check_that_all_ports_are_available = lambda: True
        server._is_server_running_on_all_ports = lambda: True
        host.filesystem.write_text_file("/mock-checkout/LayoutTests/resources/testharness.js", "0")
        host.filesystem.write_text_file("/mock-checkout/LayoutTests/imported/w3c/web-platform-tests/resources/testharness.js", "0")

        host.filesystem.write_text_file("/mock_output_dir/pid.txt", "0")
        server.start()
        server.stop()

    def test_custom_layout_tests_directory(self):
        host = MockHost()
        options = optparse.Values()
        options.ensure_value("layout_tests_dir", "/mock-layout-tests-directory/LayoutTests")
        options.ensure_value("results_directory", "/mock/output_dir")
        port = Port(host, "test", options)
        server = WebPlatformTestServer(port, "wpttest", "/mock/output_dir/pid.txt")
        server._check_that_all_ports_are_available = lambda: True
        server._is_server_running_on_all_ports = lambda: True
        host.filesystem.write_text_file("/mock-layout-tests-directory/LayoutTests/resources/testharness.js", "0")
        host.filesystem.write_text_file("/mock-layout-tests-directory/LayoutTests/imported/w3c/web-platform-tests/resources/testharness.js", "0")

        host.filesystem.write_text_file("/mock_output_dir/pid.txt", "0")
        server.start()
        server.stop()

    def test_corrupted_subserver_files(self):
        host = MockHost()
        options = optparse.Values()
        options.ensure_value("results_directory", "/mock/output_dir")
        port = Port(host, "test", options)
        server = WebPlatformTestServer(port, "wpttest", "/mock/output_dir/pid.txt")
        server._check_that_all_ports_are_available = lambda: True
        server._is_server_running_on_all_ports = lambda: True
        host.filesystem.write_text_file("/mock-checkout/LayoutTests/resources/testharness.js", "0")
        host.filesystem.write_text_file("/mock-checkout/LayoutTests/imported/w3c/web-platform-tests/resources/testharness.js", "0")

        host.filesystem.write_text_file("/mock_output_dir/wpttest_servers.json", "0")
        server.stop()
        self.assertFalse(host.filesystem.exists("/mock/output_dir/wpttest_servers.json"))

        host.filesystem.write_text_file("/mock_output_dir/wpttest_servers.json", "[0,")
        server.start()
        self.assertFalse(host.filesystem.exists("/mock/output_dir/wpttest_servers.json"))
        server.stop()

        host.filesystem.write_text_file("/mock_output_dir/wpttest_servers.json", "[{'protocol': 'http', 'port': 80 }]")
        server.start()
        self.assertFalse(host.filesystem.exists("/mock/output_dir/wpttest_servers.json"))
        server.stop()

        host.filesystem.write_text_file("/mock_output_dir/wpttest_servers.json", "[{'protocol': 'http', 'port': 80, 'pid': {} }]")
        server.start()
        self.assertFalse(host.filesystem.exists("/mock/output_dir/wpttest_servers.json"))
        server.stop()

    def test_server_fails_to_start_throws_exception(self):
        host = MockHost()
        options = optparse.Values()
        options.ensure_value("results_directory", "/mock/output_dir")
        port = Port(host, "test", options)
        server = WebPlatformTestServer(port, "wpttest", "/mock/output_dir/pid.txt")
        server._check_that_all_ports_are_available = lambda: True
        server._is_server_running_on_all_ports = lambda: True
        host.filesystem.write_text_file("/mock-checkout/LayoutTests/resources/testharness.js", "0")
        host.filesystem.write_text_file("/mock-checkout/LayoutTests/imported/w3c/web-platform-tests/resources/testharness.js", "0")

        server.start()
        server.stop()
        server._process.poll = lambda: 1
        self.assertRaises(ServerError, server.start)