diff --git a/tests/languages/pygrep_test.py b/tests/languages/pygrep_test.py
index 8420046c..c6271c80 100644
--- a/tests/languages/pygrep_test.py
+++ b/tests/languages/pygrep_test.py
@@ -3,6 +3,7 @@ from __future__ import annotations
 import pytest
 
 from pre_commit.languages import pygrep
+from testing.language_helpers import run_language
 
 
 @pytest.fixture
@@ -13,6 +14,9 @@ def some_files(tmpdir):
     tmpdir.join('f4').write_binary(b'foo\npattern\nbar\n')
     tmpdir.join('f5').write_binary(b'[INFO] hi\npattern\nbar')
     tmpdir.join('f6').write_binary(b"pattern\nbarwith'foo\n")
+    tmpdir.join('f7').write_binary(b"hello'hi\nworld\n")
+    tmpdir.join('f8').write_binary(b'foo\nbar\nbaz\n')
+    tmpdir.join('f9').write_binary(b'[WARN] hi\n')
     with tmpdir.as_cwd():
         yield
 
@@ -125,3 +129,16 @@ def test_multiline_multiline_flag_is_enabled(cap_out):
     out = cap_out.get()
     assert ret == 1
     assert out == 'f1:1:foo\nbar\n'
+
+
+def test_grep_hook_matching(some_files, tmp_path):
+    ret = run_language(
+        tmp_path, pygrep, 'ello', file_args=('f7', 'f8', 'f9'),
+    )
+    assert ret == (1, b"f7:1:hello'hi\n")
+
+
+@pytest.mark.parametrize('regex', ('nope', "foo'bar", r'^\[INFO\]'))
+def test_grep_hook_not_matching(regex, some_files, tmp_path):
+    ret = run_language(tmp_path, pygrep, regex, file_args=('f7', 'f8', 'f9'))
+    assert ret == (0, b'')
diff --git a/tests/repository_test.py b/tests/repository_test.py
index 1a16e691..332816d2 100644
--- a/tests/repository_test.py
+++ b/tests/repository_test.py
@@ -226,52 +226,6 @@ def test_output_isatty(tempdir_factory, store):
     )
 
 
-def _make_grep_repo(entry, store, args=()):
-    config = {
-        'repo': 'local',
-        'hooks': [{
-            'id': 'grep-hook',
-            'name': 'grep-hook',
-            'language': 'pygrep',
-            'entry': entry,
-            'args': args,
-            'types': ['text'],
-        }],
-    }
-    return _get_hook(config, store, 'grep-hook')
-
-
-@pytest.fixture
-def greppable_files(tmpdir):
-    with tmpdir.as_cwd():
-        cmd_output_b('git', 'init', '.')
-        tmpdir.join('f1').write_binary(b"hello'hi\nworld\n")
-        tmpdir.join('f2').write_binary(b'foo\nbar\nbaz\n')
-        tmpdir.join('f3').write_binary(b'[WARN] hi\n')
-        yield tmpdir
-
-
-def test_grep_hook_matching(greppable_files, store):
-    hook = _make_grep_repo('ello', store)
-    ret, out = _hook_run(hook, ('f1', 'f2', 'f3'), color=False)
-    assert ret == 1
-    assert _norm_out(out) == b"f1:1:hello'hi\n"
-
-
-def test_grep_hook_case_insensitive(greppable_files, store):
-    hook = _make_grep_repo('ELLO', store, args=['-i'])
-    ret, out = _hook_run(hook, ('f1', 'f2', 'f3'), color=False)
-    assert ret == 1
-    assert _norm_out(out) == b"f1:1:hello'hi\n"
-
-
-@pytest.mark.parametrize('regex', ('nope', "foo'bar", r'^\[INFO\]'))
-def test_grep_hook_not_matching(regex, greppable_files, store):
-    hook = _make_grep_repo(regex, store)
-    ret, out = _hook_run(hook, ('f1', 'f2', 'f3'), color=False)
-    assert (ret, out) == (0, b'')
-
-
 def _norm_pwd(path):
     # Under windows bash's temp and windows temp is different.
     # This normalizes to the bash /tmp