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| 1 | +/*- |
| 2 | + * #%L |
| 3 | + * JSQLParser library |
| 4 | + * %% |
| 5 | + * Copyright (C) 2004 - 2026 JSQLParser |
| 6 | + * %% |
| 7 | + * Dual licensed under GNU LGPL 2.1 or Apache License 2.0 |
| 8 | + * #L% |
| 9 | + */ |
| 10 | +package net.sf.jsqlparser.expression.operators.relational; |
| 11 | + |
| 12 | +import net.sf.jsqlparser.JSQLParserException; |
| 13 | +import net.sf.jsqlparser.expression.Expression; |
| 14 | +import net.sf.jsqlparser.expression.NotExpression; |
| 15 | +import net.sf.jsqlparser.expression.operators.conditional.AndExpression; |
| 16 | +import net.sf.jsqlparser.expression.operators.conditional.OrExpression; |
| 17 | +import net.sf.jsqlparser.parser.CCJSqlParserUtil; |
| 18 | +import net.sf.jsqlparser.statement.select.PlainSelect; |
| 19 | +import net.sf.jsqlparser.test.TestUtils; |
| 20 | +import org.junit.jupiter.api.Test; |
| 21 | +import org.junit.jupiter.params.ParameterizedTest; |
| 22 | +import org.junit.jupiter.params.provider.CsvSource; |
| 23 | +import org.junit.jupiter.params.provider.ValueSource; |
| 24 | + |
| 25 | +import static org.junit.jupiter.api.Assertions.assertEquals; |
| 26 | +import static org.junit.jupiter.api.Assertions.assertInstanceOf; |
| 27 | +import static org.junit.jupiter.api.Assertions.assertThrows; |
| 28 | + |
| 29 | +class TruthValuePredicateTest { |
| 30 | + |
| 31 | + @ParameterizedTest |
| 32 | + @CsvSource(delimiter = '|', value = { |
| 33 | + "a > 0 IS TRUE | false | true", |
| 34 | + "a IN (1, 2) IS FALSE | false | false", |
| 35 | + "a IS NULL IS NOT TRUE | true | true", |
| 36 | + "a > 0 IS NOT FALSE | true | false", |
| 37 | + "a BETWEEN 1 AND 2 IS TRUE | false | true", |
| 38 | + "a LIKE 'x%' IS FALSE | false | false", |
| 39 | + "EXISTS (SELECT 1 FROM t) IS TRUE | false | true", |
| 40 | + "a IS TRUE | false | true", |
| 41 | + "a IS FALSE | false | false", |
| 42 | + "a IS NOT TRUE | true | true", |
| 43 | + "a IS NOT FALSE | true | false", |
| 44 | + "(a > 0) IS TRUE | false | true" |
| 45 | + }) |
| 46 | + void booleanTestWrapsPredicate(String condition, boolean not, boolean isTrue) |
| 47 | + throws JSQLParserException { |
| 48 | + PlainSelect select = (PlainSelect) TestUtils |
| 49 | + .assertSqlCanBeParsedAndDeparsed("SELECT * FROM t WHERE " + condition); |
| 50 | + IsBooleanExpression expression = |
| 51 | + assertInstanceOf(IsBooleanExpression.class, select.getWhere()); |
| 52 | + assertEquals(not, expression.isNot()); |
| 53 | + assertEquals(isTrue, expression.isTrue()); |
| 54 | + assertEquals(condition.substring(0, condition.lastIndexOf(" IS ")), |
| 55 | + expression.getLeftExpression().toString()); |
| 56 | + } |
| 57 | + |
| 58 | + @ParameterizedTest |
| 59 | + @CsvSource(delimiter = '|', value = { |
| 60 | + "a > 0 IS UNKNOWN | false", |
| 61 | + "a IN (1, 2) IS NOT UNKNOWN | true", |
| 62 | + "a IS NULL IS UNKNOWN | false", |
| 63 | + "a IS UNKNOWN | false", |
| 64 | + "a IS NOT UNKNOWN | true" |
| 65 | + }) |
| 66 | + void unknownTestWrapsPredicate(String condition, boolean not) throws JSQLParserException { |
| 67 | + PlainSelect select = (PlainSelect) TestUtils |
| 68 | + .assertSqlCanBeParsedAndDeparsed("SELECT * FROM t WHERE " + condition); |
| 69 | + IsUnknownExpression expression = |
| 70 | + assertInstanceOf(IsUnknownExpression.class, select.getWhere()); |
| 71 | + assertEquals(not, expression.isNot()); |
| 72 | + assertEquals(condition.substring(0, condition.lastIndexOf(" IS ")), |
| 73 | + expression.getLeftExpression().toString()); |
| 74 | + } |
| 75 | + |
| 76 | + @Test |
| 77 | + void truthValueTestBindsBeforeLogicalOperators() throws JSQLParserException { |
| 78 | + PlainSelect select = (PlainSelect) TestUtils.assertSqlCanBeParsedAndDeparsed( |
| 79 | + "SELECT * FROM t WHERE a > 0 IS TRUE AND b IN (1, 2) IS FALSE OR c IS NULL"); |
| 80 | + OrExpression or = assertInstanceOf(OrExpression.class, select.getWhere()); |
| 81 | + AndExpression and = assertInstanceOf(AndExpression.class, or.getLeftExpression()); |
| 82 | + IsBooleanExpression left = |
| 83 | + assertInstanceOf(IsBooleanExpression.class, and.getLeftExpression()); |
| 84 | + assertInstanceOf(GreaterThan.class, left.getLeftExpression()); |
| 85 | + IsBooleanExpression right = |
| 86 | + assertInstanceOf(IsBooleanExpression.class, and.getRightExpression()); |
| 87 | + assertInstanceOf(InExpression.class, right.getLeftExpression()); |
| 88 | + assertInstanceOf(IsNullExpression.class, or.getRightExpression()); |
| 89 | + } |
| 90 | + |
| 91 | + @Test |
| 92 | + void leadingNotWrapsTruthValueTest() throws JSQLParserException { |
| 93 | + PlainSelect select = (PlainSelect) TestUtils.assertSqlCanBeParsedAndDeparsed( |
| 94 | + "SELECT * FROM t WHERE NOT a > 0 IS TRUE"); |
| 95 | + NotExpression not = assertInstanceOf(NotExpression.class, select.getWhere()); |
| 96 | + IsBooleanExpression expression = |
| 97 | + assertInstanceOf(IsBooleanExpression.class, not.getExpression()); |
| 98 | + assertInstanceOf(GreaterThan.class, expression.getLeftExpression()); |
| 99 | + } |
| 100 | + |
| 101 | + @Test |
| 102 | + void selectItemAcceptsTruthValueTest() throws JSQLParserException { |
| 103 | + PlainSelect select = (PlainSelect) TestUtils |
| 104 | + .assertSqlCanBeParsedAndDeparsed("SELECT a > 0 IS TRUE FROM t"); |
| 105 | + Expression expression = select.getSelectItem(0).getExpression(); |
| 106 | + IsBooleanExpression predicate = assertInstanceOf(IsBooleanExpression.class, expression); |
| 107 | + assertInstanceOf(GreaterThan.class, predicate.getLeftExpression()); |
| 108 | + } |
| 109 | + |
| 110 | + @ParameterizedTest |
| 111 | + @ValueSource(strings = {"a > 0 IS", "a > 0 IS NOT", "a > 0 IS MAYBE"}) |
| 112 | + void invalidTruthValueTestIsRejected(String condition) { |
| 113 | + assertThrows(JSQLParserException.class, () -> TestUtils |
| 114 | + .assertSqlCanBeParsedAndDeparsed("SELECT * FROM t WHERE " + condition)); |
| 115 | + } |
| 116 | + |
| 117 | + @ParameterizedTest |
| 118 | + @ValueSource(strings = {"a > 0 IS MAYBE", "a > 0 IS NULL"}) |
| 119 | + void partialParsingLeavesUnrecognizedSuffix(String condition) throws JSQLParserException { |
| 120 | + assertEquals("a > 0", CCJSqlParserUtil.parseExpression(condition).toString()); |
| 121 | + assertEquals("a > 0", CCJSqlParserUtil.parseCondExpression(condition).toString()); |
| 122 | + } |
| 123 | +} |
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