Add initial implementation for running SBT commands.

tests/languages/sbt_test.py

@@ -0,0 +1,63 @@
+from __future__ import annotations
+
+from itertools import product
+from pathlib import Path
+from typing import Any
+
+import pytest
+
+from pre_commit.hook import Hook
+from pre_commit.languages import sbt
+from testing.util import cwd
+from testing.util import skipif_cant_run_sbt
+
+
+@skipif_cant_run_sbt
+@pytest.mark.parametrize(
+    ['args', 'files'],
+    product(
+        [
+            [], ['argfile1.txt'], ['argfile1.txt', 'argfile2.txt'],
+            ['\"arg file1.txt\"'], ['\"arg file1.txt\"', '\"arg file2.txt\"'],
+        ],
+        [
+            [], ['filesfile1.txt'], ['filesfile1.txt', 'filesfile2.txt'],
+            ['files file1.txt'], ['files file1.txt', 'files file2.txt'],
+        ],
+    ),
+)
+def test_sbt_hook(
+        sbt_project_with_touch_command: Path,
+        args: list[str],
+        files: list[str],
+) -> None:
+    # arrange
+    project_root = sbt_project_with_touch_command
+    hook = _create_hook(
+        language='sbt',
+        entry='touch',
+        args=args,
+    )
+
+    # act
+    with cwd(project_root):
+        ret, out = sbt.run_hook(hook, files, False)
+
+    # assert
+    output = out.decode('UTF-8')
+    assert ret == 0
+    for file in args + files:
+        unquoted_file = _unquote(file)
+        expected_file = project_root.joinpath(unquoted_file).absolute()
+        assert expected_file.exists()
+        assert f'Creating file: {expected_file}' in output
+
+
+def _unquote(s: str) -> str:
+    return s.strip("\"")
+
+
+def _create_hook(**kwargs: Any) -> Hook:
+    default_values = {field: None for field in Hook._fields}
+    actual_values = {**default_values, **kwargs}
+    return Hook(**actual_values)  # type: ignore