Adding upstream version 6.0.4.

Signed-off-by: Daniel Baumann <daniel@debian.org>

tests/test_parser.py

@@ -0,0 +1,195 @@
+import unittest
+from unittest.mock import patch
+
+from sqlglot import Parser, exp, parse, parse_one
+from sqlglot.errors import ErrorLevel, ParseError
+from tests.helpers import assert_logger_contains
+
+
+class TestParser(unittest.TestCase):
+    def test_parse_empty(self):
+        self.assertIsNone(parse_one(""))
+
+    def test_parse_into(self):
+        self.assertIsInstance(parse_one("left join foo", into=exp.Join), exp.Join)
+        self.assertIsInstance(parse_one("int", into=exp.DataType), exp.DataType)
+        self.assertIsInstance(parse_one("array<int>", into=exp.DataType), exp.DataType)
+
+    def test_column(self):
+        columns = parse_one("select a, ARRAY[1] b, case when 1 then 1 end").find_all(
+            exp.Column
+        )
+        assert len(list(columns)) == 1
+
+        self.assertIsNotNone(parse_one("date").find(exp.Column))
+
+    def test_table(self):
+        tables = [
+            t.sql() for t in parse_one("select * from a, b.c, .d").find_all(exp.Table)
+        ]
+        self.assertEqual(tables, ["a", "b.c", "d"])
+
+    def test_select(self):
+        self.assertIsNotNone(
+            parse_one("select * from (select 1) x order by x.y").args["order"]
+        )
+        self.assertIsNotNone(
+            parse_one("select * from x where a = (select 1) order by x.y").args["order"]
+        )
+        self.assertEqual(
+            len(parse_one("select * from (select 1) x cross join y").args["joins"]), 1
+        )
+
+    def test_command(self):
+        expressions = parse("SET x = 1; ADD JAR s3://a; SELECT 1")
+        self.assertEqual(len(expressions), 3)
+        self.assertEqual(expressions[0].sql(), "SET x = 1")
+        self.assertEqual(expressions[1].sql(), "ADD JAR s3://a")
+        self.assertEqual(expressions[2].sql(), "SELECT 1")
+
+    def test_identify(self):
+        expression = parse_one(
+            """
+            SELECT a, "b", c AS c, d AS "D", e AS "y|z'"
+            FROM y."z"
+        """
+        )
+
+        assert expression.expressions[0].text("this") == "a"
+        assert expression.expressions[1].text("this") == "b"
+        assert expression.expressions[2].text("alias") == "c"
+        assert expression.expressions[3].text("alias") == "D"
+        assert expression.expressions[4].text("alias") == "y|z'"
+        table = expression.args["from"].expressions[0]
+        assert table.args["this"].args["this"] == "z"
+        assert table.args["db"].args["this"] == "y"
+
+    def test_multi(self):
+        expressions = parse(
+            """
+            SELECT * FROM a; SELECT * FROM b;
+        """
+        )
+
+        assert len(expressions) == 2
+        assert (
+            expressions[0].args["from"].expressions[0].args["this"].args["this"] == "a"
+        )
+        assert (
+            expressions[1].args["from"].expressions[0].args["this"].args["this"] == "b"
+        )
+
+    def test_expression(self):
+        ignore = Parser(error_level=ErrorLevel.IGNORE)
+        self.assertIsInstance(ignore.expression(exp.Hint, expressions=[""]), exp.Hint)
+        self.assertIsInstance(ignore.expression(exp.Hint, y=""), exp.Hint)
+        self.assertIsInstance(ignore.expression(exp.Hint), exp.Hint)
+
+        default = Parser()
+        self.assertIsInstance(default.expression(exp.Hint, expressions=[""]), exp.Hint)
+        default.expression(exp.Hint, y="")
+        default.expression(exp.Hint)
+        self.assertEqual(len(default.errors), 3)
+
+        warn = Parser(error_level=ErrorLevel.WARN)
+        warn.expression(exp.Hint, y="")
+        self.assertEqual(len(warn.errors), 2)
+
+    def test_parse_errors(self):
+        with self.assertRaises(ParseError):
+            parse_one("IF(a > 0, a, b, c)")
+
+        with self.assertRaises(ParseError):
+            parse_one("IF(a > 0)")
+
+        with self.assertRaises(ParseError):
+            parse_one("WITH cte AS (SELECT * FROM x)")
+
+    def test_space(self):
+        self.assertEqual(
+            parse_one("SELECT ROW() OVER(PARTITION  BY x) FROM x GROUP  BY y").sql(),
+            "SELECT ROW() OVER (PARTITION BY x) FROM x GROUP BY y",
+        )
+
+        self.assertEqual(
+            parse_one(
+                """SELECT   * FROM x GROUP
+                BY y"""
+            ).sql(),
+            "SELECT * FROM x GROUP BY y",
+        )
+
+    def test_missing_by(self):
+        with self.assertRaises(ParseError):
+            parse_one("SELECT FROM x ORDER BY")
+
+    def test_annotations(self):
+        expression = parse_one(
+            """
+            SELECT
+                a #annotation1,
+                b as B #annotation2:testing ,
+                "test#annotation",c#annotation3, d #annotation4,
+                e #,
+                f # space
+            FROM foo
+        """
+        )
+
+        assert expression.expressions[0].name == "annotation1"
+        assert expression.expressions[1].name == "annotation2:testing "
+        assert expression.expressions[2].name == "test#annotation"
+        assert expression.expressions[3].name == "annotation3"
+        assert expression.expressions[4].name == "annotation4"
+        assert expression.expressions[5].name == ""
+        assert expression.expressions[6].name == " space"
+
+    def test_pretty_config_override(self):
+        self.assertEqual(parse_one("SELECT col FROM x").sql(), "SELECT col FROM x")
+        with patch("sqlglot.pretty", True):
+            self.assertEqual(
+                parse_one("SELECT col FROM x").sql(), "SELECT\n  col\nFROM x"
+            )
+
+        self.assertEqual(
+            parse_one("SELECT col FROM x").sql(pretty=True), "SELECT\n  col\nFROM x"
+        )
+
+    @patch("sqlglot.parser.logger")
+    def test_comment_error_n(self, logger):
+        parse_one(
+            """CREATE TABLE x
+(
+-- test
+)""",
+            error_level=ErrorLevel.WARN,
+        )
+
+        assert_logger_contains(
+            "Required keyword: 'expressions' missing for <class 'sqlglot.expressions.Schema'>. Line 4, Col: 1.",
+            logger,
+        )
+
+    @patch("sqlglot.parser.logger")
+    def test_comment_error_r(self, logger):
+        parse_one(
+            """CREATE TABLE x (-- test\r)""",
+            error_level=ErrorLevel.WARN,
+        )
+
+        assert_logger_contains(
+            "Required keyword: 'expressions' missing for <class 'sqlglot.expressions.Schema'>. Line 2, Col: 1.",
+            logger,
+        )
+
+    @patch("sqlglot.parser.logger")
+    def test_create_table_error(self, logger):
+        parse_one(
+            """CREATE TABLE PARTITION""",
+            error_level=ErrorLevel.WARN,
+        )
+
+        assert_logger_contains(
+            "Expected table name",
+            logger,
+        )