Add tests for timeouts

pytest_trio/_tests/test_timeout.py

@@ -0,0 +1,48 @@
+import trio
+import functools
+
+
+def test_timeout(testdir):
+    testdir.makepyfile(
+        """
+        from trio import sleep
+        import pytest
+        import pytest_trio.timeout
+
+        @pytest.mark.timeout(0.01)
+        @pytest.mark.trio
+        async def test_will_timeout():
+            await sleep(10)
+        """
+    )
+
+    testdir.makefile(".ini", pytest="[pytest]\ntrio_timeout=true\n")
+
+    result = testdir.runpytest()
+
+    result.stdout.fnmatch_lines(["Timeout reached"])
+    result.assert_outcomes(failed=1)
+
+
+def test_timeout_strict_exception_group(testdir, monkeypatch):
+    monkeypatch.setattr(trio, "run", functools.partial(trio.run, strict_exception_groups=True))
+
+    testdir.makepyfile(
+        """
+        from trio import sleep
+        import pytest
+        import pytest_trio.timeout
+
+        @pytest.mark.timeout(0.01)
+        @pytest.mark.trio
+        async def test_will_timeout():
+            await sleep(10)
+        """
+    )
+
+    testdir.makefile(".ini", pytest="[pytest]\ntrio_timeout=true\n")
+
+    result = testdir.runpytest()
+
+    result.stdout.fnmatch_lines(["Timeout reached"])
+    result.assert_outcomes(failed=1)