diff --git a/test/unit/webdriver/app_test.py b/test/unit/webdriver/app_test.py
index e940ffec..ad989810 100644
--- a/test/unit/webdriver/app_test.py
+++ b/test/unit/webdriver/app_test.py
@@ -14,6 +14,7 @@
 
 import httpretty
 
+from appium.webdriver.applicationstate import ApplicationState
 from appium.webdriver.webdriver import WebDriver
 from test.unit.helper.test_helper import (
     android_w3c_driver,
@@ -36,3 +37,98 @@ def test_reset(self):
 
         assert {'sessionId': '1234567890'}, get_httpretty_request_body(httpretty.last_request())
         assert isinstance(result, WebDriver)
+
+    @httpretty.activate
+    def test_install_app(self):
+        driver = android_w3c_driver()
+        httpretty.register_uri(
+            httpretty.POST,
+            appium_command('/session/1234567890/appium/device/install_app'),
+            body='{"value": ""}'
+        )
+        result = driver.install_app('path/to/app')
+
+        assert {'app': 'path/to/app'}, get_httpretty_request_body(httpretty.last_request())
+        assert isinstance(result, WebDriver)
+
+    @httpretty.activate
+    def test_remove_app(self):
+        driver = android_w3c_driver()
+        httpretty.register_uri(
+            httpretty.POST,
+            appium_command('/session/1234567890/appium/device/remove_app'),
+            body='{"value": ""}'
+        )
+        result = driver.remove_app('com.app.id')
+
+        assert {'app': 'com.app.id'}, get_httpretty_request_body(httpretty.last_request())
+        assert isinstance(result, WebDriver)
+
+    @httpretty.activate
+    def test_app_installed(self):
+        driver = android_w3c_driver()
+        httpretty.register_uri(
+            httpretty.POST,
+            appium_command('/session/1234567890/appium/device/app_installed'),
+            body='{"value": true}'
+        )
+        result = driver.is_app_installed("com.app.id")
+        assert {'app': "com.app.id"}, get_httpretty_request_body(httpretty.last_request())
+        assert result is True
+
+    @httpretty.activate
+    def test_terminate_app(self):
+        driver = android_w3c_driver()
+        httpretty.register_uri(
+            httpretty.POST,
+            appium_command('/session/1234567890/appium/device/terminate_app'),
+            body='{"value": true}'
+        )
+        result = driver.terminate_app("com.app.id")
+        assert {'app': "com.app.id"}, get_httpretty_request_body(httpretty.last_request())
+        assert result is True
+
+    @httpretty.activate
+    def test_background_app(self):
+        driver = android_w3c_driver()
+        httpretty.register_uri(
+            httpretty.POST,
+            appium_command('/session/1234567890/appium/app/background'),
+            body='{"value": ""}'
+        )
+        result = driver.background_app(0)
+        assert {'app': 0}, get_httpretty_request_body(httpretty.last_request())
+        assert isinstance(result, WebDriver)
+
+    @httpretty.activate
+    def test_launch_app(self):
+        driver = android_w3c_driver()
+        httpretty.register_uri(
+            httpretty.POST,
+            appium_command('/session/1234567890/appium/app/launch'),
+            body='{"value": }'
+        )
+        assert isinstance(driver.launch_app(), WebDriver)
+
+    @httpretty.activate
+    def test_close_app(self):
+        driver = android_w3c_driver()
+        httpretty.register_uri(
+            httpretty.POST,
+            appium_command('/session/1234567890/appium/app/close'),
+            body='{"value": }'
+        )
+        assert isinstance(driver.close_app(), WebDriver)
+
+    @httpretty.activate
+    def test_query_app_state(self):
+        driver = android_w3c_driver()
+        httpretty.register_uri(
+            httpretty.POST,
+            appium_command('/session/1234567890/appium/device/app_state'),
+            body='{"value": 3 }'
+        )
+        result = driver.query_app_state('com.app.id')
+
+        assert {'app': 3}, get_httpretty_request_body(httpretty.last_request())
+        assert result is ApplicationState.RUNNING_IN_BACKGROUND