test: add first sample tests

The test can be run manually with e.g.

  labgrid-pytest --lg-env test/arm/qemu_virt64_defconfig.yaml test/py

Acked-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20210604084704.17410-11-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

7 files changed, 155 insertions, 0 deletions

diff --git a/test/.gitignore b/test/.gitignore
new file mode 100644
index 0000000000..bee8a64b79
--- /dev/null
+++ b/test/.gitignore
@@ -0,0 +1 @@
+__pycache__
diff --git a/test/__init__.py b/test/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/test/__init__.py
diff --git a/test/conftest.py b/test/conftest.py
new file mode 100644
index 0000000000..1a043a91fa
--- /dev/null
+++ b/test/conftest.py
@@ -0,0 +1,27 @@
+import pytest
+import os
+from .py import helper
+
+
+@pytest.fixture(scope='function')
+def barebox(strategy, target):
+    strategy.transition('barebox')
+    return target.get_driver('BareboxDriver')
+
+@pytest.fixture(scope="session")
+def barebox_config(strategy, target):
+    strategy.transition('barebox')
+    command = target.get_driver("BareboxDriver")
+    return helper.get_config(command)
+
+def pytest_configure(config):
+    if 'LG_BUILDDIR' not in os.environ:
+        if 'KBUILD_OUTPUT' in os.environ:
+            os.environ['LG_BUILDDIR'] = os.environ['KBUILD_OUTPUT']
+        elif os.path.isdir('build'):
+            os.environ['LG_BUILDDIR'] = os.path.realpath('build')
+        else:
+            os.environ['LG_BUILDDIR'] = os.getcwd()
+
+    if os.environ['LG_BUILDDIR'] is not None:
+        os.environ['LG_BUILDDIR'] = os.path.realpath(os.environ['LG_BUILDDIR'])
diff --git a/test/py/__init__.py b/test/py/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/test/py/__init__.py
diff --git a/test/py/helper.py b/test/py/helper.py
new file mode 100644
index 0000000000..4a68e83669
--- /dev/null
+++ b/test/py/helper.py
@@ -0,0 +1,38 @@
+from labgrid.driver import BareboxDriver
+import pytest
+import os
+from itertools import filterfalse
+
+
+def get_config(command):
+    """Returns the enabled config options of barebox, either from
+    a running instance if supported or by looking into .config
+    in the build directory.
+    Args:
+        command (BareboxDriver): An instance of the BareboxDriver
+    Returns:
+        list: list of the enabled config options
+    """
+    assert isinstance(command, BareboxDriver)
+
+    out, err, returncode = command.run("cat /env/data/config")
+    if returncode != 0:
+        try:
+            with open(os.environ['LG_BUILDDIR'] + "/.config") as f:
+                out = f.read().splitlines()
+        except OSError:
+            return set()
+
+    options = set()
+    for line in out:
+        if line and line.startswith("CONFIG_"):
+            options.add(line.split('=')[0])
+    return options
+
+
+def skip_disabled(config, *options):
+    if bool(config):
+        undefined = list(filterfalse(config.__contains__, options))
+
+        if bool(undefined):
+            pytest.skip("skipping test due to disabled " + (",".join(undefined)) + " dependency")
diff --git a/test/py/test_shell.py b/test/py/test_shell.py
new file mode 100644
index 0000000000..1af7d597a1
--- /dev/null
+++ b/test/py/test_shell.py
@@ -0,0 +1,36 @@
+import pytest
+from .helper import *
+
+
+def test_barebox_true(barebox, barebox_config):
+    skip_disabled(barebox_config, "CONFIG_CMD_TRUE")
+
+    _, _, returncode = barebox.run('true')
+    assert returncode == 0
+
+def test_barebox_false(barebox, barebox_config):
+    skip_disabled(barebox_config, "CONFIG_CMD_FALSE")
+
+    _, _, returncode = barebox.run('false')
+    assert returncode == 1
+
+def test_barebox_md5sum(barebox, barebox_config):
+    skip_disabled(barebox_config, "CONFIG_CMD_MD5SUM", "CONFIG_CMD_ECHO")
+
+    barebox.run_check("echo -o md5 test")
+    out = barebox.run_check("md5sum md5")
+    assert out == ["d8e8fca2dc0f896fd7cb4cb0031ba249  md5"]
+
+def test_barebox_version(barebox, barebox_config):
+    skip_disabled(barebox_config, "CONFIG_CMD_VERSION")
+
+    stdout, _, returncode = barebox.run('version')
+    assert 'barebox' in stdout[1]
+    assert returncode == 0
+
+def test_barebox_no_err(barebox, barebox_config):
+    skip_disabled(barebox_config, "CONFIG_CMD_DMESG")
+
+    # TODO extend by err once all qemu platforms conform
+    stdout, _, _ = barebox.run('dmesg -l crit,alert,emerg')
+    assert stdout == []
diff --git a/test/strategy.py b/test/strategy.py
new file mode 100644
index 0000000000..1fe1b7d818
--- /dev/null
+++ b/test/strategy.py
@@ -0,0 +1,53 @@
+import enum
+
+import attr
+
+from labgrid import target_factory, step
+from labgrid.strategy import Strategy, StrategyError
+
+class Status(enum.Enum):
+    unknown = 0
+    off = 1
+    barebox = 2
+
+@target_factory.reg_driver
+@attr.s(eq=False)
+class BareboxTestStrategy(Strategy):
+    """BareboxTestStrategy - Strategy to switch to barebox"""
+    bindings = {
+        "power": "PowerProtocol",
+        "console": "ConsoleProtocol",
+        "barebox": "BareboxDriver",
+    }
+
+    status = attr.ib(default=Status.unknown)
+
+    def __attrs_post_init__(self):
+        super().__attrs_post_init__()
+
+    @step(args=['status'])
+    def transition(self, status, *, step):
+        if not isinstance(status, Status):
+            status = Status[status]
+        if status == Status.unknown:
+            raise StrategyError("can not transition to {}".format(status))
+        elif status == self.status:
+            step.skip("nothing to do")
+            return  # nothing to do
+        elif status == Status.off:
+            self.target.deactivate(self.console)
+            self.target.activate(self.power)
+            self.power.off()
+        elif status == Status.barebox:
+            self.transition(Status.off)  # pylint: disable=missing-kwoa
+            self.target.activate(self.console)
+            # cycle power
+            self.power.cycle()
+            # interrupt barebox
+            self.target.activate(self.barebox)
+        else:
+            raise StrategyError(
+                "no transition found from {} to {}".
+                format(self.status, status)
+            )
+        self.status = status