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Merged
merged 27 commits into from
May 11, 2021
Merged

test: fix string compliance tests #23

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5b1d1b1
test: fix string compliance tests
HemangChothani Mar 11, 2021
0730997
fix: resolve conflict
HemangChothani Mar 11, 2021
1dba2c0
test: add todo note to remove override method and resolve conflict
HemangChothani Mar 17, 2021
55eebbf
Merge branch 'main' of https://github.com/cloudspannerecosystem/pytho…
HemangChothani Mar 18, 2021
de0732d
test: nit
HemangChothani Mar 18, 2021
89ab8d5
Merge branch 'main' into fix_string_compliance_tests
larkee Mar 19, 2021
210f938
test: remove select statements and resolve conflict
HemangChothani Mar 22, 2021
9b52c20
test: nit
HemangChothani Mar 22, 2021
a08a154
fix: nit
HemangChothani Mar 23, 2021
694ec7b
fix: remove override methods and add default value
HemangChothani Mar 24, 2021
703f58c
fix: add default value MAX
HemangChothani Mar 25, 2021
84782a0
Merge branch 'main' of https://github.com/cloudspannerecosystem/pytho…
HemangChothani Apr 1, 2021
0c53c30
test: resolve conflict
HemangChothani Apr 5, 2021
175535c
Merge branch 'main' of https://github.com/cloudspannerecosystem/pytho…
HemangChothani Apr 7, 2021
611605c
Merge branch 'main' into fix_string_compliance_tests
AVaksman Apr 7, 2021
6025d3a
Merge branch 'main' into fix_string_compliance_tests
HemangChothani Apr 8, 2021
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Merge branch 'main' of https://github.com/cloudspannerecosystem/pytho…
HemangChothani Apr 9, 2021
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Merge branch 'fix_string_compliance_tests' of https://github.com/clou…
HemangChothani Apr 9, 2021
c4b9420
test: resolve conflict
HemangChothani Apr 15, 2021
81bb2eb
test: resolve conflict
HemangChothani Apr 23, 2021
01a85fe
test: fix nit
HemangChothani Apr 23, 2021
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Merge branch 'main' of https://github.com/cloudspannerecosystem/pytho…
HemangChothani Apr 28, 2021
69cfd6b
test: add logic for additional escape ti fox the test
HemangChothani May 4, 2021
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Merge branch 'main' of https://github.com/cloudspannerecosystem/pytho…
HemangChothani May 4, 2021
bcf939c
test: add condition check for other data type
HemangChothani May 4, 2021
3229b2c
Merge branch 'main' of https://github.com/cloudspannerecosystem/pytho…
HemangChothani May 11, 2021
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test: remove override tests
HemangChothani May 11, 2021
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34 changes: 33 additions & 1 deletion test/test_suite.py
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Original file line number Diff line number Diff line change
Expand Up @@ -77,6 +77,7 @@
)
from sqlalchemy.testing.suite.test_types import BooleanTest as _BooleanTest
from sqlalchemy.testing.suite.test_types import IntegerTest as _IntegerTest
from sqlalchemy.testing.suite.test_types import StringTest as _StringTest
from sqlalchemy.testing.suite.test_types import _LiteralRoundTripFixture

from sqlalchemy.testing.suite.test_types import ( # noqa: F401, F403
Expand Down Expand Up @@ -532,7 +533,6 @@ def _literal_round_trip(self, type_, input_, output, filter_=None):
)
)
conn.execute(ins)
conn.execute("SELECT 1")

if self.supports_whereclause:
stmt = t.select().where(t.c.x == literal(value))
Expand All @@ -549,6 +549,38 @@ def _literal_round_trip(self, type_, input_, output, filter_=None):
assert value in output


class StringTest(_StringTest):
def test_literal_backslashes(self):
"""
SPANNER OVERRIDE:

Spanner supports `\\` backslash to represent valid escape sequence, but
for `'\'` Spanner throws an error `400 Syntax error: Illegal escape sequence`.
See: https://cloud.google.com/spanner/docs/lexical#string_and_bytes_literals
"""
input_data = r"backslash one \\ backslash \\\\ two end"
output_data = r"backslash one \ backslash \\ two end"

self._literal_round_trip(String(40), [input_data], [output_data])

def test_literal_quoting(self):
"""
SPANNER OVERRIDE:

The original test string is : \"""some 'text' hey "hi there" that's text\"""

Spanner doesn't support string which contains `'s` in
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This is incorrect. Spanner does support strings containing `'s': https://cloud.google.com/spanner/docs/lexical#literals

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Using the original test string with the Python client:
Input: """some 'text' hey "hi there" that's text"""
Output: 'some \'text\' hey "hi there" that\'s text'

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Yes, python successfully convert that string but spanner throws an error like 400 Syntax error: Expected \")\" or \",\" but got string literal \'text\' [at 1:41]\nINSERT INTO t_string (x) VALUES (\'some \'\'text\'\' hey \"hi there\" that\'\'s text\')\n.
I have tried with DBAPI with the direct string 'some \'text\' hey "hi there" that\'s text' and it throws the same error.

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@vi3k6i5 vi3k6i5 Apr 23, 2021 •
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Spanner prod is working with these 3 strings and adding escape characters to them.

$ Report(name=r"1. backslash one \ backslash \\ two end").save()
$ Report.objects.all()[0].name
'1. backslash one \\ backslash \\\\ two end'

$ Report(name=r"2. backslash one \ backslash \ two end").save()
$ Report.objects.all()[1].name
'2. backslash one \ backslash \\ two end'

$ Report(name="""3. some 'text' hey "hi there" that's text""").save()
$ Report.objects.all()[2].name
'3. some 'text' hey "hi there" that's text'

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I mean when it comes through the DB API it throws an error:

from google.cloud.spanner_dbapi import connect

connection = connect('instance-id', 'databse-id')
cursor = connection.cursor()

cursor.execute("INSERT INTO t (x) VALUES ('backslash one \ backslash \\ two end')")   #it will through an error `400 Syntax error: Illegal escape sequence`

cursor.execute("""INSERT INTO t (x) VALUES (some 'text' hey "hi there" that's text)""")  #it will through an error `400 Syntax error: Expected \")\" or \",\" but got string literal \'text\' `

@vi3k6i5 if you are using spanner client directly for the insert, then for help can you share the actual sql query syntax passing at that time.

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Okay, it looks like the issue is the SQL query rather than the data string. Spanner supports both 'backslash one \ backslash \\ two end'' and "some 'text' hey "hi there" that's text' however, when specifying these types of strings by SQL, the additional escapes are necessary.

Rather than skipping these tests, we need to add additional logic to add these additional escapes before they are used to generate SQL statements.

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Here is the DBAPI code showing the strings are supported:

connection = connect('test-instance', 'test-db')
cursor = connection.cursor()

cursor.execute(
    "INSERT INTO t (pkey, val) VALUES (0, \"{}\")".format(
        r'backslash one \\ backslash two \\\\ end'))

cursor.execute(
    "INSERT INTO t (pkey, val) VALUES (1, \"{}\")".format(
        r"""some 'text' hey \"hi there\" that's text"""))

cursor.execute("SELECT * FROM T")
for row in cursor.fetchall():
    print(str(row[1]))

Output:

some 'text' hey "hi there" that's text
backslash one \ backslash two \\ end

strings and throws a syntax error, e.g.: `'''hey that's text'''`
Override the method and change the input data.
"""
data = """some "text" hey "hi there" that is text"""
self._literal_round_trip(String(40), [data], [data])

@pytest.mark.skip("Spanner doesn't support non-ascii characters")
def test_literal_non_ascii(self):
pass


@pytest.mark.skip("Spanner doesn't support CREATE SEQUENCE.")
class SequenceCompilerTest(_SequenceCompilerTest):
pass
Expand Down