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|
import pytest
from moto.dynamodb.exceptions import IncorrectDataType, IncorrectOperandType
from moto.dynamodb.models import DynamoType, Item
from moto.dynamodb.parsing.ast_nodes import (
UpdateExpression,
UpdateExpressionAddAction,
UpdateExpressionAddClause,
UpdateExpressionRemoveAction,
UpdateExpressionSetAction,
)
from moto.dynamodb.parsing.executors import UpdateExpressionExecutor
from moto.dynamodb.parsing.expressions import UpdateExpressionParser
from moto.dynamodb.parsing.validators import UpdateExpressionValidator
def test_execution_of_if_not_exists_not_existing_value(table):
update_expression = "SET a = if_not_exists(b, a)"
update_expression_ast = UpdateExpressionParser.make(update_expression)
item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={"id": {"S": "1"}, "a": {"S": "A"}},
)
validated_ast = UpdateExpressionValidator(
update_expression_ast,
expression_attribute_names=None,
expression_attribute_values=None,
item=item,
table=table,
).validate()
UpdateExpressionExecutor(validated_ast, item, None).execute()
expected_item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={"id": {"S": "1"}, "a": {"S": "A"}},
)
assert expected_item == item
def test_execution_of_if_not_exists_with_existing_attribute_should_return_attribute(
table,
):
update_expression = "SET a = if_not_exists(b, a)"
update_expression_ast = UpdateExpressionParser.make(update_expression)
item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={"id": {"S": "1"}, "a": {"S": "A"}, "b": {"S": "B"}},
)
validated_ast = UpdateExpressionValidator(
update_expression_ast,
expression_attribute_names=None,
expression_attribute_values=None,
item=item,
table=table,
).validate()
UpdateExpressionExecutor(validated_ast, item, None).execute()
expected_item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={"id": {"S": "1"}, "a": {"S": "B"}, "b": {"S": "B"}},
)
assert expected_item == item
def test_execution_of_if_not_exists_with_existing_attribute_should_return_value(table):
update_expression = "SET a = if_not_exists(b, :val)"
update_expression_values = {":val": {"N": "4"}}
update_expression_ast = UpdateExpressionParser.make(update_expression)
item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={"id": {"S": "1"}, "b": {"N": "3"}},
)
validated_ast = UpdateExpressionValidator(
update_expression_ast,
expression_attribute_names=None,
expression_attribute_values=update_expression_values,
item=item,
table=table,
).validate()
UpdateExpressionExecutor(validated_ast, item, None).execute()
expected_item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={"id": {"S": "1"}, "b": {"N": "3"}, "a": {"N": "3"}},
)
assert expected_item == item
def test_execution_of_if_not_exists_with_non_existing_attribute_should_return_value(
table,
):
update_expression = "SET a = if_not_exists(b, :val)"
update_expression_values = {":val": {"N": "4"}}
update_expression_ast = UpdateExpressionParser.make(update_expression)
item = Item(
hash_key=DynamoType({"S": "id"}), range_key=None, attrs={"id": {"S": "1"}}
)
validated_ast = UpdateExpressionValidator(
update_expression_ast,
expression_attribute_names=None,
expression_attribute_values=update_expression_values,
item=item,
table=table,
).validate()
UpdateExpressionExecutor(validated_ast, item, None).execute()
expected_item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={"id": {"S": "1"}, "a": {"N": "4"}},
)
assert expected_item == item
def test_execution_of_sum_operation(table):
update_expression = "SET a = a + b"
update_expression_ast = UpdateExpressionParser.make(update_expression)
item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={"id": {"S": "1"}, "a": {"N": "3"}, "b": {"N": "4"}},
)
validated_ast = UpdateExpressionValidator(
update_expression_ast,
expression_attribute_names=None,
expression_attribute_values=None,
item=item,
table=table,
).validate()
UpdateExpressionExecutor(validated_ast, item, None).execute()
expected_item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={"id": {"S": "1"}, "a": {"N": "7"}, "b": {"N": "4"}},
)
assert expected_item == item
def test_execution_of_remove(table):
update_expression = "Remove a"
update_expression_ast = UpdateExpressionParser.make(update_expression)
item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={"id": {"S": "1"}, "a": {"N": "3"}, "b": {"N": "4"}},
)
validated_ast = UpdateExpressionValidator(
update_expression_ast,
expression_attribute_names=None,
expression_attribute_values=None,
item=item,
table=table,
).validate()
UpdateExpressionExecutor(validated_ast, item, None).execute()
expected_item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={"id": {"S": "1"}, "b": {"N": "4"}},
)
assert expected_item == item
def test_execution_of_remove_in_map(table):
update_expression = "Remove itemmap.itemlist[1].foo11"
update_expression_ast = UpdateExpressionParser.make(update_expression)
item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={
"id": {"S": "foo2"},
"itemmap": {
"M": {
"itemlist": {
"L": [
{"M": {"foo00": {"S": "bar1"}, "foo01": {"S": "bar2"}}},
{"M": {"foo10": {"S": "bar1"}, "foo11": {"S": "bar2"}}},
]
}
}
},
},
)
validated_ast = UpdateExpressionValidator(
update_expression_ast,
expression_attribute_names=None,
expression_attribute_values=None,
item=item,
table=table,
).validate()
UpdateExpressionExecutor(validated_ast, item, None).execute()
expected_item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={
"id": {"S": "foo2"},
"itemmap": {
"M": {
"itemlist": {
"L": [
{"M": {"foo00": {"S": "bar1"}, "foo01": {"S": "bar2"}}},
{"M": {"foo10": {"S": "bar1"}}},
]
}
}
},
},
)
assert expected_item == item
def test_execution_of_remove_in_list(table):
update_expression = "Remove itemmap.itemlist[1]"
update_expression_ast = UpdateExpressionParser.make(update_expression)
item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={
"id": {"S": "foo2"},
"itemmap": {
"M": {
"itemlist": {
"L": [
{"M": {"foo00": {"S": "bar1"}, "foo01": {"S": "bar2"}}},
{"M": {"foo10": {"S": "bar1"}, "foo11": {"S": "bar2"}}},
]
}
}
},
},
)
validated_ast = UpdateExpressionValidator(
update_expression_ast,
expression_attribute_names=None,
expression_attribute_values=None,
item=item,
table=table,
).validate()
UpdateExpressionExecutor(validated_ast, item, None).execute()
expected_item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={
"id": {"S": "foo2"},
"itemmap": {
"M": {
"itemlist": {
"L": [
{"M": {"foo00": {"S": "bar1"}, "foo01": {"S": "bar2"}}},
]
}
}
},
},
)
assert expected_item == item
@pytest.mark.parametrize("attr_name", ["s", "#placeholder"])
def test_execution_of_delete_element_from_set(table, attr_name):
expression_attribute_names = {"#placeholder": "s"}
update_expression = f"delete {attr_name} :value"
update_expression_ast = UpdateExpressionParser.make(update_expression)
item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={"id": {"S": "foo2"}, "s": {"SS": ["value1", "value2", "value3"]}},
)
validated_ast = UpdateExpressionValidator(
update_expression_ast,
expression_attribute_names=expression_attribute_names,
expression_attribute_values={":value": {"SS": ["value2", "value5"]}},
item=item,
table=table,
).validate()
UpdateExpressionExecutor(validated_ast, item, expression_attribute_names).execute()
expected_item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={"id": {"S": "foo2"}, "s": {"SS": ["value1", "value3"]}},
)
assert expected_item == item
# delete last elements
update_expression = f"delete {attr_name} :value"
update_expression_ast = UpdateExpressionParser.make(update_expression)
validated_ast = UpdateExpressionValidator(
update_expression_ast,
expression_attribute_names=expression_attribute_names,
expression_attribute_values={":value": {"SS": ["value1", "value3"]}},
item=item,
table=table,
).validate()
UpdateExpressionExecutor(validated_ast, item, expression_attribute_names).execute()
expected_item = Item(
hash_key=DynamoType({"S": "id"}), range_key=None, attrs={"id": {"S": "foo2"}}
)
assert expected_item == item
def test_execution_of_add_number(table):
update_expression = "add s :value"
update_expression_ast = UpdateExpressionParser.make(update_expression)
item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={"id": {"S": "foo2"}, "s": {"N": "5"}},
)
validated_ast = UpdateExpressionValidator(
update_expression_ast,
expression_attribute_names=None,
expression_attribute_values={":value": {"N": "10"}},
item=item,
table=table,
).validate()
UpdateExpressionExecutor(validated_ast, item, None).execute()
expected_item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={"id": {"S": "foo2"}, "s": {"N": "15"}},
)
assert expected_item == item
def test_execution_of_add_set_to_a_number(table):
update_expression = "add s :value"
update_expression_ast = UpdateExpressionParser.make(update_expression)
item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={"id": {"S": "foo2"}, "s": {"N": "5"}},
)
with pytest.raises(IncorrectDataType):
validated_ast = UpdateExpressionValidator(
update_expression_ast,
expression_attribute_names=None,
expression_attribute_values={":value": {"SS": ["s1"]}},
item=item,
table=table,
).validate()
UpdateExpressionExecutor(validated_ast, item, None).execute()
def test_execution_of_add_to_a_set(table):
update_expression = "ADD s :value"
update_expression_ast = UpdateExpressionParser.make(update_expression)
item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={"id": {"S": "foo2"}, "s": {"SS": ["value1", "value2", "value3"]}},
)
validated_ast = UpdateExpressionValidator(
update_expression_ast,
expression_attribute_names=None,
expression_attribute_values={":value": {"SS": ["value2", "value5"]}},
item=item,
table=table,
).validate()
UpdateExpressionExecutor(validated_ast, item, None).execute()
expected_item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={
"id": {"S": "foo2"},
"s": {"SS": ["value1", "value2", "value3", "value5"]},
},
)
assert expected_item == item
@pytest.mark.parametrize(
"expression_attribute_values,unexpected_data_type",
[
({":value": {"S": "10"}}, "STRING"),
({":value": {"N": "10"}}, "NUMBER"),
({":value": {"B": "10"}}, "BINARY"),
({":value": {"BOOL": True}}, "BOOLEAN"),
({":value": {"NULL": True}}, "NULL"),
({":value": {"M": {"el0": {"S": "10"}}}}, "MAP"),
({":value": {"L": []}}, "LIST"),
],
)
def test_execution_of__delete_element_from_set_invalid_value(
expression_attribute_values, unexpected_data_type, table
):
"""A delete statement must use a value of type SS in order to delete elements from a set."""
update_expression = "delete s :value"
update_expression_ast = UpdateExpressionParser.make(update_expression)
item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={"id": {"S": "foo2"}, "s": {"SS": ["value1", "value2", "value3"]}},
)
try:
validated_ast = UpdateExpressionValidator(
update_expression_ast,
expression_attribute_names=None,
expression_attribute_values=expression_attribute_values,
item=item,
table=table,
).validate()
UpdateExpressionExecutor(validated_ast, item, None).execute()
raise AssertionError("Must raise exception")
except IncorrectOperandType as e:
assert e.operator_or_function == "operator: DELETE"
assert e.operand_type == unexpected_data_type
def test_execution_of_delete_element_from_a_string_attribute(table):
"""A delete statement must use a value of type SS in order to delete elements from a set."""
update_expression = "delete s :value"
update_expression_ast = UpdateExpressionParser.make(update_expression)
item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={"id": {"S": "foo2"}, "s": {"S": "5"}},
)
try:
validated_ast = UpdateExpressionValidator(
update_expression_ast,
expression_attribute_names=None,
expression_attribute_values={":value": {"SS": ["value2"]}},
item=item,
table=table,
).validate()
UpdateExpressionExecutor(validated_ast, item, None).execute()
raise AssertionError("Must raise exception")
except IncorrectDataType:
assert True
def test_normalize_with_one_action(table):
update_expression = "ADD s :value"
update_expression_ast = UpdateExpressionParser.make(update_expression)
item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={"id": {"S": "foo2"}, "s": {"SS": ["value1", "value2", "value3"]}},
)
validated_ast = UpdateExpressionValidator(
update_expression_ast,
expression_attribute_names=None,
expression_attribute_values={":value": {"SS": ["value2", "value5"]}},
item=item,
table=table,
).validate()
assert len(validated_ast.children) == 1
assert isinstance(validated_ast.children[0], UpdateExpressionAddClause)
validated_ast.normalize()
assert len(validated_ast.children) == 1
assert isinstance(validated_ast.children[0], UpdateExpressionAddAction)
def test_normalize_with_multiple_actions__order_is_preserved(table):
update_expression = "ADD s :value REMOVE a[3], a[1], a[2] SET t=:value"
update_expression_ast = UpdateExpressionParser.make(update_expression)
item = Item(
hash_key=DynamoType({"S": "id"}),
range_key=None,
attrs={
"id": {"S": "foo2"},
"a": {"L": [{"S": "val1"}, {"S": "val2"}, {"S": "val3"}, {"S": "val4"}]},
"s": {"SS": ["value1", "value2", "value3"]},
},
)
validated_ast = UpdateExpressionValidator(
update_expression_ast,
expression_attribute_names=None,
expression_attribute_values={":value": {"SS": ["value2", "value5"]}},
item=item,
table=table,
).validate()
assert len(validated_ast.children) == 2
# add clause first
assert isinstance(validated_ast.children[0], UpdateExpressionAddClause)
# rest of the expression next
assert isinstance(validated_ast.children[1], UpdateExpression)
validated_ast.normalize()
assert len(validated_ast.children) == 5
# add action first
assert isinstance(validated_ast.children[0], UpdateExpressionAddAction)
# Removal actions in reverse order
assert isinstance(validated_ast.children[1], UpdateExpressionRemoveAction)
assert validated_ast.children[1].get_value() == 3
assert isinstance(validated_ast.children[2], UpdateExpressionRemoveAction)
assert validated_ast.children[2].get_value() == 2
assert isinstance(validated_ast.children[3], UpdateExpressionRemoveAction)
assert validated_ast.children[3].get_value() == 1
# Set action last, as per insertion order
assert isinstance(validated_ast.children[4], UpdateExpressionSetAction)
|
