Initial framework for testing parse_args(), load_args(). Done using pytest.

diff --git a/tests/test_parse_load_args.py b/tests/test_parse_load_args.py
new file mode 100644 (file)
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+++ b/tests/test_parse_load_args.py
@@ -0,0 +1,160 @@
+# SPDX-License-Identifier: LGPL-2.1+
+
+import argparse
+import tempfile
+import textwrap
+import uuid
+from contextlib import contextmanager
+from os import chdir, getcwd
+from pathlib import Path
+from typing import List, Optional
+
+import mkosi
+import pytest
+from mkosi.backend import Distribution, MkosiArgs, MkosiException
+
+
+def parse(argv: Optional[List[str]] = None) -> MkosiArgs:
+    return mkosi.load_args(mkosi.parse_args(argv)["default"])
+
+@contextmanager
+def cd_temp_dir():
+    old_dir = getcwd()
+
+    with tempfile.TemporaryDirectory() as tmp_dir:
+        chdir(tmp_dir)
+        try:
+            yield
+        finally:
+            chdir(old_dir)
+
+def test_parse_load_verb():
+    assert parse(["build"]).verb == "build"
+    assert parse(["clean"]).verb == "clean"
+    with pytest.raises(SystemExit):
+        parse(["help"])
+    assert parse(["genkey"]).verb == "genkey"
+    assert parse(["bump"]).verb == "bump"
+    assert parse(["serve"]).verb == "serve"
+    assert parse(["build"]).verb == "build"
+    assert parse(["shell"]).verb == "shell"
+    assert parse(["boot"]).verb == "boot"
+    assert parse(["qemu"]).verb == "qemu"
+    with pytest.raises(SystemExit):
+        parse(["invalid"])
+
+def test_os_distribution():
+    for dist in Distribution:
+        assert parse(["-d", dist.name]).distribution == dist
+
+    with pytest.raises((argparse.ArgumentError, SystemExit)):
+        parse(["-d", "invalidDistro"])
+    with pytest.raises((argparse.ArgumentError, SystemExit)):
+        parse(["-d"])
+
+    for dist in Distribution:
+        with cd_temp_dir():
+            config = Path("mkosi.default")
+            config.write_text(f"[Distribution]\nDistribution={dist}")
+            assert parse([]).distribution == dist
+
+def test_machine_id():
+    id = uuid.uuid4().hex
+    load_args = parse(["--machine-id", id])
+
+    assert load_args.machine_id == id
+    assert load_args.machine_id_is_fixed
+
+    with pytest.raises(MkosiException):
+        parse(["--machine-id", "notValidKey"])
+    with pytest.raises((argparse.ArgumentError, SystemExit)):
+        parse(["--machine-id"])
+
+    with cd_temp_dir():
+        config = Path("mkosi.default")
+        config.write_text(f"[Output]\nMachineID={id}")
+        load_args = parse([])
+        assert load_args.machine_id == id
+        assert load_args.machine_id_is_fixed
+
+    with cd_temp_dir():
+        config = Path("mkosi.default")
+        config.write_text("[Output]\nMachineID=")
+        with pytest.raises(MkosiException):
+            parse([])
+
+def test_hostname():
+    assert parse(["--hostname", "name"]).hostname == "name"
+    with pytest.raises(SystemExit):
+        parse(["--hostname", "name", "additional_name"])
+    with pytest.raises(SystemExit):
+        parse(["--hostname"])
+
+    with cd_temp_dir():
+        config = Path("mkosi.default")
+        config.write_text("[Output]\nHostname=name")
+        assert parse([]).hostname == "name"
+
+    with cd_temp_dir():
+        config = Path("mkosi.default")
+        config.write_text("[Output]\nHostname=")
+        config = Path("hostname.txt")
+        assert parse([]).hostname == ""
+
+def test_centos_brtfs():
+    with cd_temp_dir():
+        config = Path("mkosi.default")
+        for dist in (Distribution.centos, Distribution.centos_epel):
+            for release in range (2, 9):
+                config.write_text(
+                    textwrap.dedent(
+                        f"""
+                        [Distribution]
+                        Distribution={dist}
+                        Release={release}
+                        [Output]
+                        Format=gpt_btrfs
+                        """
+                    )
+                )
+                with pytest.raises(MkosiException, match=".CentOS.*btrfs"):
+                    parse([])
+
+    with cd_temp_dir():
+        config = Path("mkosi.default")
+        for dist in (Distribution.centos, Distribution.centos_epel):
+            for release in range (2, 8):
+                config.write_text(
+                    textwrap.dedent(
+                        f"""
+                        [Distribution]
+                        Distribution={Distribution.centos}
+                        Release={release}
+                        Bootable=yes
+                        """
+                    )
+                )
+                with pytest.raises(MkosiException, match=".CentOS.*unified.*kernel"):
+                    parse([])
+
+def test_shell_boot():
+    with pytest.raises(MkosiException, match=".boot.*tar"):
+        parse(["--format", "tar", "boot"])
+
+    with pytest.raises(MkosiException, match=".boot.*cpio"):
+        parse(["--format", "cpio", "boot"])
+
+    with pytest.raises(MkosiException, match=".boot.*compressed" ):
+        parse(["--format", "gpt_squashfs", "--compress-output", "True", "boot"])
+
+    with pytest.raises(MkosiException, match=".boot.*qcow2"):
+        parse(["--format", "gpt_xfs", "--qcow2", "boot"])
+
+def test_compression():
+    assert parse(["--format", "gpt_squashfs"]).compress
+
+    with pytest.raises(MkosiException, match=".*compression.*squashfs"):
+        parse(["--format", "gpt_squashfs", "--compress", "False"])
+
+    with pytest.raises(MkosiException, match=".*BIOS.*squashfs"):
+        parse(["--format", "gpt_squashfs", "--boot-protocols", "bios"])