diff --git a/src/trio/_tests/tools/test_mypy_annotate.py b/src/trio/_tests/tools/test_mypy_annotate.py
index 1289e2ad4..f733cde48 100644
--- a/src/trio/_tests/tools/test_mypy_annotate.py
+++ b/src/trio/_tests/tools/test_mypy_annotate.py
@@ -6,7 +6,7 @@
 
 import pytest
 
-from trio._tools.mypy_annotate import Result, export, main, process_line
+import trio._tools.mypy_annotate as mypy_annotate
 
 if TYPE_CHECKING:
     from pathlib import Path
@@ -19,7 +19,7 @@
         ("a regular line\n", None),
         (
             "package\\filename.py:42:8: note: Some info\n",
-            Result(
+            mypy_annotate.Result(
                 kind="notice",
                 filename="package\\filename.py",
                 start_line=42,
@@ -31,7 +31,7 @@
         ),
         (
             "package/filename.py:42:1:46:3: error: Type error here [code]\n",
-            Result(
+            mypy_annotate.Result(
                 kind="error",
                 filename="package/filename.py",
                 start_line=42,
@@ -43,7 +43,7 @@
         ),
         (
             "package/module.py:87: warn: Bad code\n",
-            Result(
+            mypy_annotate.Result(
                 kind="warning",
                 filename="package/module.py",
                 start_line=87,
@@ -53,14 +53,14 @@
     ],
     ids=["blank", "normal", "note-wcol", "error-wend", "warn-lineonly"],
 )
-def test_processing(src: str, expected: Result | None) -> None:
-    result = process_line(src)
+def test_processing(src: str, expected: mypy_annotate.Result | None) -> None:
+    result = mypy_annotate.process_line(src)
     assert result == expected
 
 
 def test_export(capsys: pytest.CaptureFixture[str]) -> None:
     results = {
-        Result(
+        mypy_annotate.Result(
             kind="notice",
             filename="package\\filename.py",
             start_line=42,
@@ -69,7 +69,7 @@ def test_export(capsys: pytest.CaptureFixture[str]) -> None:
             end_col=None,
             message=" Some info",
         ): ["Windows", "Mac"],
-        Result(
+        mypy_annotate.Result(
             kind="error",
             filename="package/filename.py",
             start_line=42,
@@ -78,14 +78,14 @@ def test_export(capsys: pytest.CaptureFixture[str]) -> None:
             end_col=3,
             message=" Type error here [code]",
         ): ["Linux", "Mac"],
-        Result(
+        mypy_annotate.Result(
             kind="warning",
             filename="package/module.py",
             start_line=87,
             message=" Bad code",
         ): ["Linux"],
     }
-    export(results)
+    mypy_annotate.export(results)
     std = capsys.readouterr()
     assert std.err == ""
     assert std.out == (
@@ -105,7 +105,6 @@ def test_endtoend(
     monkeypatch: pytest.MonkeyPatch,
     capsys: pytest.CaptureFixture[str],
 ) -> None:
-    import trio._tools.mypy_annotate as mypy_annotate
 
     inp_text = """\
 Mypy begun
@@ -128,7 +127,7 @@ def test_endtoend(
 
     assert result_file.exists()
 
-    main(["--dumpfile", str(result_file)])
+    mypy_annotate.main(["--dumpfile", str(result_file)])
 
     std = capsys.readouterr()
     assert std.err == ""