diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index c46596e209e..5feb4165155 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -49,6 +49,9 @@ aiounifi==4
 # homeassistant.components.notify.apns
 apns2==0.3.0
 
+# homeassistant.components.zha
+bellows==0.7.0
+
 # homeassistant.components.calendar.caldav
 caldav==0.5.0
 
@@ -298,3 +301,6 @@ wakeonlan==1.1.6
 
 # homeassistant.components.cloud
 warrant==0.6.1
+
+# homeassistant.components.zha
+zigpy==0.2.0
diff --git a/script/gen_requirements_all.py b/script/gen_requirements_all.py
index 398b2791848..4a99ef84bc9 100755
--- a/script/gen_requirements_all.py
+++ b/script/gen_requirements_all.py
@@ -124,6 +124,8 @@ TEST_REQUIREMENTS = (
     'vultr',
     'YesssSMS',
     'ruamel.yaml',
+    'zigpy',
+    'bellows',
 )
 
 IGNORE_PACKAGES = (
diff --git a/tests/components/zha/common.py b/tests/components/zha/common.py
new file mode 100644
index 00000000000..ea0e5f43467
--- /dev/null
+++ b/tests/components/zha/common.py
@@ -0,0 +1,152 @@
+"""Common test objects."""
+import time
+from unittest.mock import Mock
+from homeassistant.components.zha.core.helpers import convert_ieee
+from homeassistant.components.zha.core.const import (
+    DATA_ZHA, DATA_ZHA_CONFIG, DATA_ZHA_DISPATCHERS, DATA_ZHA_BRIDGE_ID
+)
+from homeassistant.util import slugify
+
+
+class FakeApplication:
+    """Fake application for mocking zigpy."""
+
+    def __init__(self):
+        """Init fake application."""
+        self.ieee = convert_ieee("00:15:8d:00:02:32:4f:32")
+        self.nwk = 0x087d
+
+
+APPLICATION = FakeApplication()
+
+
+class FakeEndpoint:
+    """Fake endpoint for moking zigpy."""
+
+    def __init__(self):
+        """Init fake endpoint."""
+        from zigpy.profiles.zha import PROFILE_ID
+        self.device = None
+        self.endpoint_id = 1
+        self.in_clusters = {}
+        self.out_clusters = {}
+        self._cluster_attr = {}
+        self.status = 1
+        self.manufacturer = 'FakeManufacturer'
+        self.model = 'FakeModel'
+        self.profile_id = PROFILE_ID
+        self.device_type = None
+
+    def add_input_cluster(self, cluster_id):
+        """Add an input cluster."""
+        from zigpy.zcl import Cluster
+        cluster = Cluster.from_id(self, cluster_id)
+        patch_cluster(cluster)
+        self.in_clusters[cluster_id] = cluster
+        if hasattr(cluster, 'ep_attribute'):
+            setattr(self, cluster.ep_attribute, cluster)
+
+    def add_output_cluster(self, cluster_id):
+        """Add an output cluster."""
+        from zigpy.zcl import Cluster
+        cluster = Cluster.from_id(self, cluster_id)
+        patch_cluster(cluster)
+        self.out_clusters[cluster_id] = cluster
+
+
+def patch_cluster(cluster):
+    """Patch a cluster for testing."""
+    cluster.deserialize = Mock()
+    cluster.handle_cluster_request = Mock()
+    cluster.handle_cluster_general_request = Mock()
+    cluster.read_attributes_raw = Mock()
+    cluster.read_attributes = Mock()
+    cluster.write_attributes = Mock()
+    cluster.bind = Mock()
+    cluster.unbind = Mock()
+    cluster.configure_reporting = Mock()
+
+
+class FakeDevice:
+    """Fake device for mocking zigpy."""
+
+    def __init__(self):
+        """Init fake device."""
+        self._application = APPLICATION
+        self.ieee = convert_ieee("00:0d:6f:00:0a:90:69:e7")
+        self.nwk = 0xb79c
+        self.zdo = Mock()
+        self.endpoints = {0: self.zdo}
+        self.lqi = 255
+        self.rssi = 8
+        self.last_seen = time.time()
+        self.status = 2
+        self.initializing = False
+        self.manufacturer = 'FakeManufacturer'
+        self.model = 'FakeModel'
+
+
+def make_device(in_cluster_ids, out_cluster_ids, device_type):
+    """Make a fake device using the specified cluster classes."""
+    device = FakeDevice()
+    endpoint = FakeEndpoint()
+    endpoint.device = device
+    device.endpoints[endpoint.endpoint_id] = endpoint
+    endpoint.device_type = device_type
+
+    for cluster_id in in_cluster_ids:
+        endpoint.add_input_cluster(cluster_id)
+
+    for cluster_id in out_cluster_ids:
+        endpoint.add_output_cluster(cluster_id)
+
+    return device
+
+
+async def async_init_zigpy_device(
+        hass, in_cluster_ids, out_cluster_ids, device_type, gateway):
+    """Create and initialize a device."""
+    device = make_device(in_cluster_ids, out_cluster_ids, device_type)
+    await gateway.async_device_initialized(device, False)
+    await hass.async_block_till_done()
+    return device
+
+
+def make_attribute(attrid, value, status=0):
+    """Make an attribute."""
+    from zigpy.zcl.foundation import Attribute, TypeValue
+    attr = Attribute()
+    attr.attrid = attrid
+    attr.value = TypeValue()
+    attr.value.value = value
+    return attr
+
+
+async def async_setup_entry(hass, config_entry):
+    """Mock setup entry for zha."""
+    hass.data[DATA_ZHA][DATA_ZHA_CONFIG] = {}
+    hass.data[DATA_ZHA][DATA_ZHA_DISPATCHERS] = []
+    hass.data[DATA_ZHA][DATA_ZHA_BRIDGE_ID] = APPLICATION.ieee
+    return True
+
+
+def make_entity_id(domain, device, cluster):
+    """Make the entity id for the entity under testing."""
+    ieee = device.ieee
+    ieeetail = ''.join(['%02x' % (o, ) for o in ieee[-4:]])
+    entity_id = "{}.{}_{}_{}_{}{}".format(
+        domain,
+        slugify(device.manufacturer),
+        slugify(device.model),
+        ieeetail,
+        cluster.endpoint.endpoint_id,
+        "_{}".format(cluster.cluster_id),
+    )
+    return entity_id
+
+
+async def async_enable_traffic(hass, zha_gateway, zha_device):
+    """Allow traffic to flow through the gateway and the zha device."""
+    await zha_gateway.accept_zigbee_messages({})
+    zha_device.update_available(True)
+    await hass.async_block_till_done()
diff --git a/tests/components/zha/conftest.py b/tests/components/zha/conftest.py
new file mode 100644
index 00000000000..59509e2ab03
--- /dev/null
+++ b/tests/components/zha/conftest.py
@@ -0,0 +1,38 @@
+"""Test configuration for the ZHA component."""
+from unittest.mock import patch
+import pytest
+from homeassistant import config_entries
+from homeassistant.components.zha.core.const import (
+    DOMAIN, DATA_ZHA
+)
+from homeassistant.components.zha.core.gateway import ZHAGateway
+from .common import async_setup_entry
+
+
+@pytest.fixture(name='config_entry')
+def config_entry_fixture(hass):
+    """Fixture representing a config entry."""
+    config_entry = config_entries.ConfigEntry(
+        1, DOMAIN, 'Mock Title', {}, 'test',
+        config_entries.CONN_CLASS_LOCAL_PUSH)
+    return config_entry
+
+
+@pytest.fixture(name='zha_gateway')
+def zha_gateway_fixture(hass):
+    """Fixture representing a zha gateway."""
+    return ZHAGateway(hass, {})
+
+
+@pytest.fixture(autouse=True)
+async def setup_zha(hass, config_entry):
+    """Load the ZHA component."""
+    # this prevents needing an actual radio and zigbee network available
+    with patch('homeassistant.components.zha.async_setup_entry',
+               async_setup_entry):
+        hass.data[DATA_ZHA] = {}
+
+        # init ZHA
+        await hass.config_entries.async_forward_entry_setup(
+            config_entry, DOMAIN)
+        await hass.async_block_till_done()
diff --git a/tests/components/zha/test_switch.py b/tests/components/zha/test_switch.py
new file mode 100644
index 00000000000..e86eb7fdd9b
--- /dev/null
+++ b/tests/components/zha/test_switch.py
@@ -0,0 +1,66 @@
+"""Test zha switch."""
+from unittest.mock import call, patch
+from homeassistant.components.switch import DOMAIN
+from homeassistant.const import STATE_ON, STATE_OFF
+from tests.common import mock_coro
+from .common import (
+    async_init_zigpy_device, make_attribute, make_entity_id
+)
+
+ON = 1
+OFF = 0
+
+
+async def test_switch(hass, config_entry, zha_gateway):
+    """Test zha switch platform."""
+    from zigpy.zcl.clusters.general import OnOff
+    from zigpy.zcl.foundation import Status
+
+    # create zigpy device
+    zigpy_device = await async_init_zigpy_device(
+        hass, [OnOff.cluster_id], [], None, zha_gateway)
+
+    # load up switch domain
+    await hass.config_entries.async_forward_entry_setup(
+        config_entry, DOMAIN)
+    await hass.async_block_till_done()
+
+    cluster = zigpy_device.endpoints.get(1).on_off
+    entity_id = make_entity_id(DOMAIN, zigpy_device, cluster)
+
+    # test that the state has changed from unavailable to off
+    assert hass.states.get(entity_id).state == STATE_OFF
+
+    # turn on at switch
+    attr = make_attribute(0, 1)
+    cluster.handle_message(False, 1, 0x0a, [[attr]])
+    await hass.async_block_till_done()
+    assert hass.states.get(entity_id).state == STATE_ON
+
+    # turn off at switch
+    attr.value.value = 0
+    cluster.handle_message(False, 0, 0x0a, [[attr]])
+    await hass.async_block_till_done()
+    assert hass.states.get(entity_id).state == STATE_OFF
+
+    with patch(
+            'zigpy.zcl.Cluster.request',
+            return_value=mock_coro([Status.SUCCESS, Status.SUCCESS])):
+        # turn on via UI
+        await hass.services.async_call(DOMAIN, 'turn_on', {
+            'entity_id': entity_id
+        }, blocking=True)
+        assert len(cluster.request.mock_calls) == 1
+        assert cluster.request.call_args == call(
+            False, ON, (), expect_reply=True, manufacturer=None)
+
+    with patch(
+            'zigpy.zcl.Cluster.request',
+            return_value=mock_coro([Status.SUCCESS, Status.SUCCESS])):
+        # turn off via UI
+        await hass.services.async_call(DOMAIN, 'turn_off', {
+            'entity_id': entity_id
+        }, blocking=True)
+        assert len(cluster.request.mock_calls) == 1
+        assert cluster.request.call_args == call(
+            False, OFF, (), expect_reply=True, manufacturer=None)