test: add initial tests for the VCS tool plugin.

Signed-off-by: James McCorrie <[email protected]>

Author: machshev

tests/tool/test_vcs.py

@@ -0,0 +1,55 @@
+# copyright lowrisc contributors (opentitan project).
+# licensed under the apache license, version 2.0, see license for details.
+# spdx-license-identifier: apache-2.0
+
+"""Test the VCS tool plugin."""
+
+from collections.abc import Sequence
+
+import pytest
+from hamcrest import assert_that, equal_to
+
+from dvsim.tool.utils import get_sim_tool_plugin
+
+__all__ = ("TestVCSToolPlugin",)
+
+
+def fake_log(sim_time: float = 1, sim_time_units: str = "s") -> Sequence[str]:
+    """Fabricate a log."""
+    return [
+        "Other",
+        "log",
+        "content",
+        "",
+        "     V C S   S i m u l a t i o n   R e p o r t    ",
+        f"Time: {sim_time} {sim_time_units}",
+    ]
+
+
+class TestVCSToolPlugin:
+    """Test the VCS tool plug-in."""
+
+    @staticmethod
+    @pytest.mark.parametrize(
+        ("time", "units"),
+        [
+            (1.2, "s"),
+            (2.12, "ps"),
+            (3.73, "S"),
+            (4.235, "pS"),
+            (5.5134, "PS"),
+        ],
+    )
+    def test_get_simulated_time(time: int, units: str) -> None:
+        """Test that sim plugins can be retrieved correctly."""
+        plugin = get_sim_tool_plugin("vcs")
+
+        assert_that(
+            plugin.get_simulated_time(
+                log_text=fake_log(
+                    sim_time=time,
+                    sim_time_units=units,
+                )
+            ),
+            equal_to((time, units.lower())),
+        )