tests: Accommodate tests run on Windows

PR-21: #21

tests/test_cli.py

@@ -2,6 +2,8 @@
 
 from __future__ import annotations
 
+import sys
+
 import pytest
 
 from failprint import cli, debug
@@ -27,7 +29,7 @@ def test_show_help(capsys: pytest.CaptureFixture) -> None:
 
 def test_run_command() -> None:
     """Run a simple command."""
-    assert cli.main(["echo", "hello"]) == 0
+    assert cli.main(["--", sys.executable, "-c", "print('hello')"]) == 0
 
 
 def test_accept_custom_format(capsys: pytest.CaptureFixture) -> None:
@@ -36,7 +38,7 @@ def test_accept_custom_format(capsys: pytest.CaptureFixture) -> None:
     Arguments:
         capsys: Pytest fixture to capture output.
     """
-    assert cli.main(["--no-progress", "-f", "custom={{output}}", "echo", "custom"]) == 0
+    assert cli.main(["--no-progress", "-f", "custom={{output}}", "--", sys.executable, "-c", "print('custom')"]) == 0
     outerr = capsys.readouterr()
     assert "custom" in outerr.out
 

tests/test_formats.py

@@ -2,6 +2,7 @@
 
 from __future__ import annotations
 
+import sys
 from typing import TYPE_CHECKING, Callable
 
 import pytest
@@ -104,10 +105,10 @@ def test_tap_format(capsys: pytest.CaptureFixture) -> None:
     Arguments:
         capsys: Pytest fixture to capture output.
     """
-    run(["true"], fmt="tap")
+    run([sys.executable, "-c", "import sys; sys.exit(0)"], fmt="tap")
     outerr = capsys.readouterr()
     assert "ok" in outerr.out
-    run(["false"], fmt="tap")
+    run([sys.executable, "-c", "import sys; sys.exit(1)"], fmt="tap")
     outerr = capsys.readouterr()
     assert "not ok" in outerr.out
 
@@ -146,7 +147,7 @@ def test_escaping_and_unescaping_command_and_output(capsys: pytest.CaptureFixtur
     Arguments:
         capsys: Pytest fixture to capture output.
     """
-    run(["test", "-z", "<l num=0>hello</l>"], fmt="pretty")
+    run([sys.executable, "-c", "print('<l num=0>hello</l>')"], fmt="pretty")
     outerr = capsys.readouterr()
     assert "<l num=0>hello</l>" in outerr.out
     assert LT not in outerr.out

tests/test_process.py

@@ -2,6 +2,8 @@
 
 from __future__ import annotations
 
+import sys
+
 import pytest
 from hypothesis import given, settings
 from hypothesis.strategies import characters, text
@@ -46,13 +48,14 @@ def test_run_pty_subprocess_capture_none(capsys: pytest.CaptureFixture) -> None:
 
 
 @given(text(alphabet=characters(blacklist_categories=["C"])))
+@settings(deadline=None)
 def test_pass_stdin_to_subprocess(stdin: str) -> None:
     """Pass input to a normal subprocess.
 
     Arguments:
         stdin: Text sample generated by Hypothesis.
     """
-    code, output = run_subprocess(["cat"], stdin=stdin)
+    code, output = run_subprocess([sys.executable, "-c", "import sys; print(sys.stdin.read(), end='')"], stdin=stdin)
     assert code == 0
     assert output == stdin
 

tests/test_runners.py

@@ -21,7 +21,7 @@ def test_run_silent_command_silently(capsys: pytest.CaptureFixture) -> None:
     Arguments:
         capsys: Pytest fixture to capture output.
     """
-    run(["true"], silent=True)
+    run([sys.executable, "-c", "import sys; sys.exit(0))"], silent=True)
     outerr = capsys.readouterr()
     assert not outerr.out
     assert not outerr.err
@@ -33,7 +33,7 @@ def test_run_verbose_command_silently(capsys: pytest.CaptureFixture) -> None:
     Arguments:
         capsys: Pytest fixture to capture output.
     """
-    run("echo VERBS", silent=True)
+    run([sys.executable, "-c", "print('VERBS')"], silent=True)
     outerr = capsys.readouterr()
     assert not outerr.out
     assert not outerr.err
@@ -45,9 +45,9 @@ def test_run_silent_command_verbosely(capsys: pytest.CaptureFixture) -> None:
     Arguments:
         capsys: Pytest fixture to capture output.
     """
-    run(["true"])
+    run([sys.executable, "-c", "import sys; sys.exit(0)"])
     outerr = capsys.readouterr()
-    assert "true" in outerr.out
+    assert sys.executable in outerr.out
     assert not outerr.err
 
 
@@ -57,9 +57,9 @@ def test_run_failing_silent_command_verbosely(capsys: pytest.CaptureFixture) ->
     Arguments:
         capsys: Pytest fixture to capture output.
     """
-    run(["false"])
+    run([sys.executable, "-c", "import sys; sys.exit(1)"])
     outerr = capsys.readouterr()
-    assert "false" in outerr.out
+    assert sys.executable in outerr.out
     assert not outerr.err
 
 
@@ -69,20 +69,20 @@ def test_run_verbose_command_verbosely(capsys: pytest.CaptureFixture) -> None:
     Arguments:
         capsys: Pytest fixture to capture output.
     """
-    assert run("echo VERBS").code == 0
+    assert run([sys.executable, "-c", "print('VERBS')"]).code == 0
     outerr = capsys.readouterr()
     assert "VERBS" in outerr.out
     assert not outerr.err
 
 
 def test_return_success_code() -> None:
     """Check the return code of a successful command."""
-    assert run(["true"]).code == 0
+    assert run([sys.executable, "-c", "import sys; sys.exit(0)"]).code == 0
 
 
 def test_return_failure_code() -> None:
     """Check the return code of a failing command."""
-    assert run(["false"]).code == 1
+    assert run([sys.executable, "-c", "import sys; sys.exit(1)"]).code == 1
 
 
 def test_return_shell_custom_code() -> None:
@@ -221,7 +221,11 @@ def test_process_capture_both() -> None:
     msg_stdout = "out"
     msg_stderr = "err"
     result = run(
-        ["bash", "-c", f"echo {msg_stdout}; echo {msg_stderr} >&2"],
+        [
+            sys.executable,
+            "-c",
+            f"import sys; print('{msg_stdout}', file=sys.stdout); print('{msg_stderr}', file=sys.stderr)",
+        ],
         capture=True,
         fmt="custom={{output}}",
     )
@@ -234,7 +238,11 @@ def test_process_capture_stdout() -> None:
     msg_stdout = "out"
     msg_stderr = "err"
     result = run(
-        ["bash", "-c", f"echo {msg_stdout}; echo {msg_stderr} >&2"],
+        [
+            sys.executable,
+            "-c",
+            f"import sys; print('{msg_stdout}', file=sys.stdout); print('{msg_stderr}', file=sys.stderr)",
+        ],
         capture="stdout",
         fmt="custom={{output}}",
     )
@@ -247,7 +255,11 @@ def test_process_capture_stderr() -> None:
     msg_stdout = "out"
     msg_stderr = "err"
     result = run(
-        ["bash", "-c", f"echo {msg_stdout}; echo {msg_stderr} >&2"],
+        [
+            sys.executable,
+            "-c",
+            f"import sys; print('{msg_stdout}', file=sys.stdout); print('{msg_stderr}', file=sys.stderr)",
+        ],
         capture="stderr",
         fmt="custom={{output}}",
     )