Add a test for the play command.

tests/play_test.py

@@ -0,0 +1,52 @@
+import cliff.app
+import dcc.play
+import logging
+import mockito.matchers
+import pathlib
+import subprocess
+import tempfile
+
+
+logger = logging.getLogger(__name__)
+
+
+def test_play(when):
+    with tempfile.TemporaryDirectory() as td:
+        tdp = pathlib.Path(td)
+        tdp.joinpath("config.toml").write_text(
+            """
+            dsda = "dsda-doom/exe"
+            iwad = "DOOM2.WAD"
+            complevel = "2"
+"""
+        )
+        pwp = tdp.joinpath("pwads")
+        pwp.mkdir()
+        scp = pwp.joinpath("scythe")
+        scp.mkdir()
+        scp.joinpath("config.toml").touch()
+        scp.joinpath("scythe.wad").touch()
+        zero = subprocess.CompletedProcess
+        zero.returncode = 0
+        when(subprocess).run(
+            [
+                tdp.joinpath("dsda-doom").joinpath("exe"),
+                "-iwad",
+                tdp.joinpath("iwads").joinpath("DOOM2.WAD"),
+                "-file",
+                tdp.joinpath("pwads").joinpath("scythe").joinpath("scythe.wad"),
+                "-complevel",
+                "2",
+                "-skill",
+                "4",
+                "-warp",
+                "01",
+            ]
+        ).thenReturn(zero)
+        dcc.play.Play.__init__ = lambda self: None
+        dcc.play.Play.get_epilog = lambda self: ""
+        rig = dcc.play.Play()
+        rig._hooks = []
+        parser = rig.get_parser("test_play")
+        parsed_args = parser.parse_args(args=["--doom", td, "scythe", "01"])
+        assert rig.run(parsed_args) == 0