def test_select_expr_negate(self): "Checks that a negate operation is not selected" l = ast.Literal('foo') n = ast.NegateOperator(l) name = merge.node_name(n) expr = merge.select_rewrite_expression(DEEP, name, [n]) assert expr == l
def test_negate(self): "Test negation static analysis" t = ast.Constant(True) f = ast.Constant(False) n = ast.NegateOperator(t) # Should reduce to False c, r = optimizer.optimization_pass(n) assert c == 1 assert isinstance(r, ast.Constant) assert r.value == False # Should reduce to True n = ast.NegateOperator(f) c, r = optimizer.optimization_pass(n) assert c == 1 assert isinstance(r, ast.Constant) assert r.value == True
def test_names(self): n1 = ast.Literal("foo") assert ("Literal", "foo") == merge.node_name(n1) n2 = ast.Number(12) assert ("Number", 12) == merge.node_name(n2) n3 = ast.Constant(True) assert ("Constant", True) == merge.node_name(n3) n4 = ast.Regex("^tubez$") assert ("Regex", "^tubez$") == merge.node_name(n4) n5 = ast.Undefined() assert "Undefined" == merge.node_name(n5) n6 = ast.Empty() assert "Empty" == merge.node_name(n6) # Negate does not emit the operator! n7 = ast.NegateOperator(n3) assert ("Constant", True) == merge.node_name(n7) n8 = ast.CompareOperator('=', n1, n2) n8_name = merge.node_name(n8) assert ("CompareOperator", "=", ("Literal", "foo"), ("Number", 12)) == n8_name n8_static = merge.node_name(n8, True) assert ("CompareOperator", "equality", ("Literal", "foo"), ("Number", "static")) == n8_static n9 = ast.MatchOperator(n1, n4) n9_name = merge.node_name(n9) assert ("MatchOperator", ("Literal", "foo"), ("Regex", "^tubez$")) == n9_name n10 = ast.ContainsOperator(n1, n2) n10_name = merge.node_name(n10) assert ("ContainsOperator", ("Literal", "foo"), ("Number", 12.0)) == n10_name # Logical operator returns literal! n11 = ast.LogicalOperator('and', n1, n3) n11_name = merge.node_name(n11) assert ("Literal", "foo") == n11_name # Literal set just uses name n12 = ast.LiteralSet([n1, n2]) n12_name = merge.node_name(n12) assert "LiteralSet" == n12_name
def test_names(self): n1 = ast.Literal("foo") assert ("Literal", "foo") == compact.node_name(n1) n2 = ast.Number(12) assert ("Number", 12) == compact.node_name(n2) n3 = ast.Constant(True) assert ("Constant", True) == compact.node_name(n3) n4 = ast.Regex("^tubez$") assert ("Regex", "^tubez$") == compact.node_name(n4) n5 = ast.Undefined() assert "Undefined" == compact.node_name(n5) n6 = ast.Empty() assert "Empty" == compact.node_name(n6) n7 = ast.NegateOperator(n3) assert ("NegateOperator", ("Constant", True)) == compact.node_name(n7) n8 = ast.CompareOperator('=', n1, n2) n8_name = compact.node_name(n8) assert ("CompareOperator", "=", ("Literal", "foo"), ("Number", 12)) == n8_name n9 = ast.MatchOperator(n1, n4) n9_name = compact.node_name(n9) assert ("MatchOperator", ("Literal", "foo"), ("Regex", "^tubez$")) == n9_name n10 = ast.ContainsOperator(n1, n2) n10_name = compact.node_name(n10) assert ("ContainsOperator", ("Literal", "foo"), ("Number", 12.0)) == n10_name n11 = ast.LogicalOperator('and', n1, n3) n11_name = compact.node_name(n11) assert ("LogicalOperator", "and", ("Literal", "foo"), ("Constant", True)) == n11_name
def test_negate_true(self): l = ast.Literal("l") a = ast.NegateOperator(l) res, ctx = a.analyze(MockPred(), {"l": True}) assert not res assert ctx.literals["l"] == True