Refactored URL routing to add tests, closes #1666

Refs #1660

tests/test_routes.py

@@ -0,0 +1,34 @@
+from datasette.app import Datasette
+from datasette.utils import resolve_routes
+import pytest
+
+
+@pytest.fixture(scope="session")
+def routes():
+    ds = Datasette()
+    return ds._routes()
+
+
+@pytest.mark.parametrize(
+    "path,expected",
+    (
+        ("/", "IndexView"),
+        ("/foo", "DatabaseView"),
+        ("/foo.csv", "DatabaseView"),
+        ("/foo.json", "DatabaseView"),
+        ("/foo.humbug", "DatabaseView"),
+        ("/foo/humbug", "TableView"),
+        ("/foo/humbug.json", "TableView"),
+        ("/foo/humbug.blah", "TableView"),
+        ("/foo/humbug/1", "RowView"),
+        ("/foo/humbug/1.json", "RowView"),
+        ("/-/metadata.json", "JsonDataView"),
+        ("/-/metadata", "JsonDataView"),
+    ),
+)
+def test_routes(routes, path, expected):
+    match, view = resolve_routes(routes, path)
+    if expected is None:
+        assert match is None
+    else:
+        assert view.view_class.__name__ == expected