Passing platform arg on image pull (#3465)

* Passing platform arg on image pull

* Passing in addon arch to image pull

* Move sys_arch above sys_plugins in setup

* Default to supervisor arch

* Cleanup from feedback

tests/docker/test_interface.py

@@ -0,0 +1,52 @@
+"""Test Docker interface."""
+from unittest.mock import Mock, PropertyMock, call, patch
+
+from awesomeversion import AwesomeVersion
+import pytest
+
+from supervisor.const import CpuArch
+from supervisor.coresys import CoreSys
+from supervisor.docker.interface import DockerInterface
+
+
+@pytest.fixture(autouse=True)
+def mock_verify_content(coresys: CoreSys):
+    """Mock verify_content utility during tests."""
+    with patch.object(
+        coresys.security, "verify_content", return_value=None
+    ) as verify_content:
+        yield verify_content
+
+
+@pytest.mark.parametrize(
+    "cpu_arch, platform",
+    [
+        (CpuArch.ARMV7, "linux/arm/v7"),
+        (CpuArch.ARMHF, "linux/arm/v6"),
+        (CpuArch.AARCH64, "linux/arm64"),
+        (CpuArch.I386, "linux/386"),
+        (CpuArch.AMD64, "linux/amd64"),
+    ],
+)
+async def test_docker_image_platform(coresys: CoreSys, cpu_arch: str, platform: str):
+    """Test platform set correctly from arch."""
+    with patch.object(
+        coresys.docker.images, "pull", return_value=Mock(id="test:1.2.3")
+    ) as pull:
+        instance = DockerInterface(coresys)
+        await instance.install(AwesomeVersion("1.2.3"), "test", arch=cpu_arch)
+        assert pull.call_count == 1
+        assert pull.call_args == call("test:1.2.3", platform=platform)
+
+
+async def test_docker_image_default_platform(coresys: CoreSys):
+    """Test platform set using supervisor arch when omitted."""
+    with patch.object(
+        type(coresys.supervisor), "arch", PropertyMock(return_value="i386")
+    ), patch.object(
+        coresys.docker.images, "pull", return_value=Mock(id="test:1.2.3")
+    ) as pull:
+        instance = DockerInterface(coresys)
+        await instance.install(AwesomeVersion("1.2.3"), "test")
+        assert pull.call_count == 1
+        assert pull.call_args == call("test:1.2.3", platform="linux/386")