Working on the matches() function

tests/tests_matches.py

@@ -0,0 +1,41 @@
+import pytest
+from fasthtml.components import *
+
+from myfasthtml.core.matcher import matches, StartsWith, Contains, DoesNotContain
+
+
+@pytest.mark.parametrize('actual, expected', [
+    (Div(), Div()),
+    (None, None),
+    ([Div(), Span()], [Div(), Span()]),
+    (Div(attr1="value"), Div(attr1="value")),
+    (Div(attr1="value", attr2="value"), Div(attr1="value")),
+    (Div(attr1="valueXXX", attr2="value"), Div(attr1=StartsWith("value"))),
+    (Div(attr1="before value after", attr2="value"), Div(attr1=Contains("value"))),
+    (Div(attr1="before after", attr2="value"), Div(attr1=DoesNotContain("value"))),
+])
+def test_i_can_match(actual, expected):
+  assert matches(actual, expected)
+
+
+@pytest.mark.parametrize('actual, expected, error_message', [
+    (None, Div(), "Actual is None"),
+    (Div(), None, "Actual is not None"),
+    (123, Div(), "The types are different:"),
+    ([Div(), Span()], [], "Actual is bigger than expected:"),
+    ([], [Div(), Span()], "Actual is smaller than expected:"),
+    ("not a list", [Div(), Span()], "The types are different:"),
+    ([Div(), Span()], [Div(), 123], "The types are different:"),
+    (Div(), Span(), "The elements are different:"),
+    ([Div(), Span()], [Div(), Div()], "The elements are different:"),
+    (Div(), Div(attr1="value"), "'attr1' is not found in Actual:"),
+    (Div(attr1="value1"), Div(attr1="value2"), "The values are different for 'attr1':"),
+    (Div(attr1="value1"), Div(attr1=StartsWith("value2")), "The condition 'StartsWith(value2)' is not satisfied:"),
+    (Div(attr1="value1"), Div(attr1=Contains("value2")), "The condition 'Contains(value2)' is not satisfied:"),
+    (Div(attr1="value1 value2"), Div(attr1=DoesNotContain("value2")), "The condition 'DoesNotContain(value2)' is not satisfied:"),
+
+])
+def test_i_can_detect_errors(actual, expected, error_message):
+  with pytest.raises(AssertionError) as exc_info:
+    matches(actual, expected)
+  assert error_message in str(exc_info.value)