1 files changed, 60 insertions, 0 deletions
diff --git a/tests/test_data.py b/tests/test_data.py
new file mode 100644
index 0000000..d73ff7c
--- /dev/null
+++ b/tests/test_data.py
@@ -0,0 +1,60 @@
+# SPDX-License-Identifier: MIT
+# SPDX-FileCopyrightText: 2021 Taneli Hukkinen
+# Licensed to PSF under a Contributor Agreement.
+
+import json
+from pathlib import Path
+import unittest
+
+from . import burntsushi, tomllib
+
+
+class MissingFile:
+    def __init__(self, path: Path):
+        self.path = path
+
+
+DATA_DIR = Path(__file__).parent / "data"
+
+VALID_FILES = tuple((DATA_DIR / "valid").glob("**/*.toml"))
+# VALID_FILES_EXPECTED = tuple(
+#     json.loads(p.with_suffix(".json").read_bytes().decode()) for p in VALID_FILES
+# )
+_expected_files = []
+for p in VALID_FILES:
+    json_path = p.with_suffix(".json")
+    try:
+        text = json.loads(json_path.read_bytes().decode())
+    except FileNotFoundError:
+        text = MissingFile(json_path)
+    _expected_files.append(text)
+
+VALID_FILES_EXPECTED = tuple(_expected_files)
+INVALID_FILES = tuple((DATA_DIR / "invalid").glob("**/*.toml"))
+
+
+class TestData(unittest.TestCase):
+    def test_invalid(self):
+        for invalid in INVALID_FILES:
+            with self.subTest(msg=invalid.stem):
+                toml_bytes = invalid.read_bytes()
+                try:
+                    toml_str = toml_bytes.decode()
+                except UnicodeDecodeError:
+                    # Some BurntSushi tests are not valid UTF-8. Skip those.
+                    continue
+                with self.assertRaises(tomllib.TOMLDecodeError):
+                    tomllib.loads(toml_str)
+
+    def test_valid(self):
+        for valid, expected in zip(VALID_FILES, VALID_FILES_EXPECTED):
+            with self.subTest(msg=valid.stem):
+                if isinstance(expected, MissingFile):
+                    # Would be nice to xfail here, but unittest doesn't seem
+                    # to allow that in a nice way.
+                    continue
+                toml_str = valid.read_bytes().decode()
+                actual = tomllib.loads(toml_str)
+                actual = burntsushi.convert(actual)
+                expected = burntsushi.normalize(expected)
+                self.assertEqual(actual, expected)