Add CLI tests and run them in CI (#29)

* ci: run pytest with default verbosity

* tests(cli): locate console script by interpreter path

* tests(cli): harden and extend coverage

* ci: remove pip caching from workflow

Author: osori

.github/workflows/python-app.yml

@@ -28,6 +28,7 @@ jobs:
         python -m pip install --upgrade pip
         pip install flake8 pytest
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+        pip install .
     - name: Lint with flake8
       run: |
         # stop the build if there are Python syntax errors or undefined names

tests/test_cli.py

@@ -0,0 +1,94 @@
+import os
+import shutil
+import subprocess
+import sys
+from pathlib import Path
+
+import pytest
+from korean_romanizer.romanizer import Romanizer
+
+
+UTF8_ENV = {**os.environ, "PYTHONIOENCODING": "UTF-8"}
+
+
+def _run_cli(args, *, input=None):
+    cmd = [sys.executable, "-m", "korean_romanizer.cli", *args]
+    return subprocess.run(
+        cmd,
+        input=input,
+        capture_output=True,
+        text=True,
+        encoding="utf-8",
+        check=False,
+        env=UTF8_ENV,
+        timeout=10,
+    )
+
+
+@pytest.mark.parametrize(
+    "text",
+    [
+        "안녕하세요",
+        "아이유 방탄소년단",
+        "구미, 영동",
+        "구미,\t영동   서울!!",
+    ],
+)
+def test_cli_matches_library(text):
+    args = text.split()
+    expected = Romanizer(" ".join(args)).romanize().strip()
+    proc = _run_cli(args)
+    assert proc.returncode == 0
+    assert proc.stderr == ""
+    assert proc.stdout.strip() == expected
+
+
+def test_cli_help():
+    proc = _run_cli(["-h"])
+    assert proc.returncode == 0
+    assert proc.stderr == ""
+    assert "usage" in proc.stdout.lower()
+
+
+@pytest.mark.parametrize("stdin", [None, "안녕하세요\n"])
+def test_cli_no_args_shows_usage(stdin):
+    proc = _run_cli([], input=stdin)
+    assert proc.returncode != 0
+    assert "usage" in proc.stderr.lower()
+
+
+def test_cli_long_input():
+    text = ("안녕하세요 " * 1000).strip()
+    args = text.split()
+    expected = Romanizer(" ".join(args)).romanize().strip()
+    proc = _run_cli(args)
+    assert proc.returncode == 0
+    assert proc.stderr == ""
+    assert proc.stdout.strip() == expected
+
+
+def test_console_script_smoke():
+    exe = shutil.which("kroman")
+    if not exe:
+        candidate = Path(sys.executable).with_name("kroman")
+        if candidate.exists():
+            exe = str(candidate)
+    if not exe:
+        candidate = Path(sys.executable).with_name("kroman.exe")
+        if candidate.exists():
+            exe = str(candidate)
+    if not exe:
+        pytest.skip("kroman console script not installed")
+    proc = subprocess.run(
+        [exe, "안녕하세요"],
+        capture_output=True,
+        text=True,
+        encoding="utf-8",
+        check=False,
+        env=UTF8_ENV,
+        timeout=10,
+    )
+    expected = Romanizer("안녕하세요").romanize().strip()
+    assert proc.returncode == 0
+    assert proc.stderr == ""
+    assert proc.stdout.strip() == expected