coursier: additional_dependencies support

tests/languages/coursier_test.py

@@ -0,0 +1,45 @@
+from __future__ import annotations
+
+import pytest
+
+from pre_commit.errors import FatalError
+from pre_commit.languages import coursier
+from testing.language_helpers import run_language
+
+
+def test_coursier_hook(tmp_path):
+    echo_java_json = '''\
+{
+  "repositories": ["central"],
+  "dependencies": ["io.get-coursier:echo:latest.stable"]
+}
+'''
+
+    channel_dir = tmp_path.joinpath('.pre-commit-channel')
+    channel_dir.mkdir()
+    channel_dir.joinpath('echo-java.json').write_text(echo_java_json)
+
+    ret = run_language(
+        tmp_path,
+        coursier,
+        'echo-java',
+        args=('Hello', 'World', 'from', 'coursier'),
+    )
+    assert ret == (0, b'Hello World from coursier\n')
+
+
+def test_coursier_hook_additional_dependencies(tmp_path):
+    ret = run_language(
+        tmp_path,
+        coursier,
+        'scalafmt --version',
+        deps=('scalafmt:3.6.1',),
+    )
+    assert ret == (0, b'scalafmt 3.6.1\n')
+
+
+def test_error_if_no_deps_or_channel(tmp_path):
+    with pytest.raises(FatalError) as excinfo:
+        run_language(tmp_path, coursier, 'dne')
+    msg, = excinfo.value.args
+    assert msg == 'expected .pre-commit-channel dir or additional_dependencies'

tests/repository_test.py

@@ -32,7 +32,6 @@ from testing.fixtures import make_repo
 from testing.fixtures import modify_manifest
 from testing.util import cwd
 from testing.util import get_resource_path
-from testing.util import skipif_cant_run_coursier
 from testing.util import skipif_cant_run_docker
 from testing.util import skipif_cant_run_lua
 from testing.util import skipif_cant_run_swift
@@ -199,15 +198,6 @@ def test_language_versioned_python_hook(tempdir_factory, store):
         )
 
 
-@skipif_cant_run_coursier  # pragma: win32 no cover
-def test_run_a_coursier_hook(tempdir_factory, store):
-    _test_hook_repo(
-        tempdir_factory, store, 'coursier_hooks_repo',
-        'echo-java',
-        ['Hello World from coursier'], b'Hello World from coursier\n',
-    )
-
-
 @skipif_cant_run_docker  # pragma: win32 no cover
 def test_run_a_docker_hook(tempdir_factory, store):
     _test_hook_repo(