rdblue commented on code in PR #5303:
URL: https://github.com/apache/iceberg/pull/5303#discussion_r975762419
##########
python/tests/expressions/test_expressions_base.py:
##########
@@ -841,3 +924,290 @@ def test_not_expression_binding(unbound_not_expression,
expected_bound_expressio
"""Test that visiting an unbound NOT expression with a bind-visitor
returns the expected bound expression"""
bound_expression = base.visit(unbound_not_expression,
visitor=base.BindVisitor(schema=table_schema_simple))
assert bound_expression == expected_bound_expression
+
+
+def test_bound_boolean_expression_visitor_ignore_is_nan_for_string_type():
+ """Test ignoring IsNan expressions when the field type is a String"""
+ bound_expression = base.And(
+ base.BoundIn[str](
+ term=base.BoundReference(
+ field=NestedField(field_id=1, name="foo",
field_type=StringType(), required=False),
+ accessor=Accessor(position=0, inner=None),
+ ),
+ literals=(StringLiteral("foo"), StringLiteral("bar")),
+ ),
+ base.Not(
+ base.BoundIsNaN[str](
+ term=base.BoundReference(
+ field=NestedField(field_id=1, name="foo",
field_type=StringType(), required=False),
+ accessor=Accessor(position=0, inner=None),
+ ),
+ )
+ ),
+ )
+ visitor = FooBoundBooleanExpressionVisitor()
+ result = base.visit(bound_expression, visitor=visitor)
+ assert result == ["IN"]
+
+
+def test_bound_boolean_expression_visitor_and_in():
+ """Test visiting an And and In expression with a bound boolean expression
visitor"""
+ bound_expression = base.And(
+ base.BoundIn[str](
+ term=base.BoundReference(
+ field=NestedField(field_id=1, name="foo",
field_type=StringType(), required=False),
+ accessor=Accessor(position=0, inner=None),
+ ),
+ literals=(StringLiteral("foo"), StringLiteral("bar")),
+ ),
+ base.BoundIn[str](
+ term=base.BoundReference(
+ field=NestedField(field_id=2, name="bar",
field_type=StringType(), required=False),
+ accessor=Accessor(position=1, inner=None),
+ ),
+ literals=(StringLiteral("baz"), StringLiteral("qux")),
+ ),
+ )
+ visitor = FooBoundBooleanExpressionVisitor()
+ result = base.visit(bound_expression, visitor=visitor)
+ assert result == ["IN", "IN", "AND"]
+
+
+def test_bound_boolean_expression_visitor_or():
+ """Test visiting an Or expression with a bound boolean expression
visitor"""
+ bound_expression = base.Or(
+ base.Not(
+ base.BoundIn[str](
+ base.BoundReference[str](
+ field=NestedField(field_id=1, name="foo",
field_type=StringType(), required=False),
+ accessor=Accessor(position=0, inner=None),
+ ),
+ {StringLiteral("foo"), StringLiteral("bar")},
+ )
+ ),
+ base.Not(
+ base.BoundIn[str](
+ base.BoundReference[str](
+ field=NestedField(field_id=2, name="bar",
field_type=StringType(), required=False),
+ accessor=Accessor(position=1, inner=None),
+ ),
+ {StringLiteral("baz"), StringLiteral("qux")},
+ )
+ ),
+ )
+ visitor = FooBoundBooleanExpressionVisitor()
+ result = base.visit(bound_expression, visitor=visitor)
+ assert result == ["IN", "NOT", "IN", "NOT", "OR"]
+
+
+def test_bound_boolean_expression_visitor_equal_and_not_equal():
+ """Test visiting an And expression with a bound boolean expression
visitor"""
+ bound_expression = base.And(
+ base.BoundNotEqualTo[str](
+ term=base.BoundReference(
+ field=NestedField(field_id=1, name="foo",
field_type=StringType(), required=False),
+ accessor=Accessor(position=0, inner=None),
+ ),
+ literal=StringLiteral("foo"),
+ ),
+ base.BoundEqualTo[str](
+ term=base.BoundReference(
+ field=NestedField(field_id=2, name="bar",
field_type=StringType(), required=False),
+ accessor=Accessor(position=1, inner=None),
+ ),
+ literal=StringLiteral("foo"),
+ ),
+ )
+ visitor = FooBoundBooleanExpressionVisitor()
+ result = base.visit(bound_expression, visitor=visitor)
+ assert result == ["NOT_EQUAL", "EQUAL", "AND"]
+
+
+def test_bound_boolean_expression_visitor_always_true():
+ """Test visiting an And expression with a bound boolean expression visitor
that resolves to AlwaysTrue"""
+ bound_expression = base.Or(
+ base.BoundIsNaN[str](
+ term=base.BoundReference(
+ field=NestedField(field_id=1, name="foo",
field_type=StringType(), required=False),
+ accessor=Accessor(position=0, inner=None),
+ )
+ ),
+ base.BoundNotNaN[str](
+ term=base.BoundReference(
+ field=NestedField(field_id=1, name="foo",
field_type=StringType(), required=False),
+ accessor=Accessor(position=0, inner=None),
+ )
+ ),
+ )
+ visitor = FooBoundBooleanExpressionVisitor()
+ result = base.visit(bound_expression, visitor=visitor)
+ assert result == ["TRUE"]
+
+
+def test_bound_boolean_expression_visitor_always_false():
+ """Test visiting an And expression with a bound boolean expression visitor
that resolves to AlwaysFalse"""
+ bound_expression = base.And(
Review Comment:
Why not test the false/true expressions directly?
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