Add remote_fs unittest (appium#410)

* Add test_push_file unittest

* Add test_pull_file unittest

* Add remote_fs error cases unittest

Author: ki4070ma

test/unit/webdriver/device/remote_fs_test.py

@@ -0,0 +1,101 @@
+#!/usr/bin/env python
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import base64
+
+import httpretty
+import pytest
+from selenium.common.exceptions import InvalidArgumentException
+
+from appium.common.helper import appium_bytes
+from appium.webdriver.webdriver import WebDriver
+from test.unit.helper.test_helper import (
+    android_w3c_driver,
+    appium_command,
+    get_httpretty_request_body
+)
+
+
+class TestWebDriverRemoteFs(object):
+
+    @httpretty.activate
+    def test_push_file(self):
+        driver = android_w3c_driver()
+        httpretty.register_uri(
+            httpretty.POST,
+            appium_command('/session/1234567890/appium/device/push_file'),
+        )
+        dest_path = '/path/to/file.txt'
+        data = base64.b64encode(appium_bytes('HelloWorld', 'utf-8')).decode('utf-8')
+
+        assert isinstance(driver.push_file(dest_path, data), WebDriver)
+
+        d = get_httpretty_request_body(httpretty.last_request())
+        assert d['path'] == dest_path
+        assert d['data'] == str(data)
+
+    @httpretty.activate
+    def test_push_file_invalid_arg_exception_without_src_path_and_base64data(self):
+        driver = android_w3c_driver()
+        httpretty.register_uri(
+            httpretty.POST,
+            appium_command('/session/1234567890/appium/device/push_file'),
+        )
+        dest_path = '/path/to/file.txt'
+
+        with pytest.raises(InvalidArgumentException):
+            driver.push_file(dest_path)
+
+    @httpretty.activate
+    def test_push_file_invalid_arg_exception_with_src_file_not_found(self):
+        driver = android_w3c_driver()
+        httpretty.register_uri(
+            httpretty.POST,
+            appium_command('/session/1234567890/appium/device/push_file'),
+        )
+        dest_path = '/dest_path/to/file.txt'
+        src_path = '/src_path/to/file.txt'
+
+        with pytest.raises(InvalidArgumentException):
+            driver.push_file(dest_path, source_path=src_path)
+
+    @httpretty.activate
+    def test_pull_file(self):
+        driver = android_w3c_driver()
+        httpretty.register_uri(
+            httpretty.POST,
+            appium_command('/session/1234567890/appium/device/pull_file'),
+            body='{"value": "SGVsbG9Xb3JsZA=="}'
+        )
+        dest_path = '/path/to/file.txt'
+
+        assert driver.pull_file(dest_path) == str(base64.b64encode(appium_bytes('HelloWorld', 'utf-8')).decode('utf-8'))
+
+        d = get_httpretty_request_body(httpretty.last_request())
+        assert d['path'] == dest_path
+
+    @httpretty.activate
+    def test_pull_folder(self):
+        driver = android_w3c_driver()
+        httpretty.register_uri(
+            httpretty.POST,
+            appium_command('/session/1234567890/appium/device/pull_folder'),
+            body='{"value": "base64EncodedZippedFolderData"}'
+        )
+        dest_path = '/path/to/file.txt'
+
+        assert driver.pull_folder(dest_path) == 'base64EncodedZippedFolderData'
+
+        d = get_httpretty_request_body(httpretty.last_request())
+        assert d['path'] == dest_path