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ExpressionTests.java
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ExpressionTests.java
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/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License;
* you may not use this file except in compliance with the Elastic License.
*/
package org.elasticsearch.xpack.sql.parser;
import org.elasticsearch.test.ESTestCase;
import org.elasticsearch.xpack.sql.expression.Expression;
import org.elasticsearch.xpack.sql.expression.Literal;
import org.elasticsearch.xpack.sql.expression.function.UnresolvedFunction;
import org.elasticsearch.xpack.sql.expression.function.scalar.Cast;
import org.elasticsearch.xpack.sql.expression.predicate.operator.arithmetic.Add;
import org.elasticsearch.xpack.sql.expression.predicate.operator.arithmetic.Mul;
import org.elasticsearch.xpack.sql.expression.predicate.operator.arithmetic.Neg;
import org.elasticsearch.xpack.sql.expression.predicate.operator.arithmetic.Sub;
import org.elasticsearch.xpack.sql.expression.predicate.operator.comparison.Equals;
import org.elasticsearch.xpack.sql.expression.predicate.operator.comparison.NotEquals;
import org.elasticsearch.xpack.sql.type.DataType;
import static org.hamcrest.core.StringStartsWith.startsWith;
public class ExpressionTests extends ESTestCase {
private final SqlParser parser = new SqlParser();
public void testTokenFunctionName() {
Expression lt = parser.createExpression("LEFT()");
assertEquals(UnresolvedFunction.class, lt.getClass());
UnresolvedFunction uf = (UnresolvedFunction) lt;
assertEquals("LEFT", uf.functionName());
}
public void testLiteralBoolean() {
Expression lt = parser.createExpression("TRUE");
assertEquals(Literal.class, lt.getClass());
Literal l = (Literal) lt;
assertEquals(Boolean.TRUE, l.value());
assertEquals(DataType.BOOLEAN, l.dataType());
}
public void testLiteralDouble() {
Expression lt = parser.createExpression(String.valueOf(Double.MAX_VALUE));
assertEquals(Literal.class, lt.getClass());
Literal l = (Literal) lt;
assertEquals(Double.MAX_VALUE, l.value());
assertEquals(DataType.DOUBLE, l.dataType());
}
public void testLiteralDoubleNegative() {
Expression lt = parser.createExpression(String.valueOf(Double.MIN_VALUE));
assertEquals(Literal.class, lt.getClass());
Literal l = (Literal) lt;
assertEquals(Double.MIN_VALUE, l.value());
assertEquals(DataType.DOUBLE, l.dataType());
}
public void testLiteralDoublePositive() {
Expression lt = parser.createExpression("+" + Double.MAX_VALUE);
assertEquals(Literal.class, lt.getClass());
Literal l = (Literal) lt;
assertEquals(Double.MAX_VALUE, l.value());
assertEquals(DataType.DOUBLE, l.dataType());
}
public void testLiteralLong() {
Expression lt = parser.createExpression(String.valueOf(Long.MAX_VALUE));
assertEquals(Literal.class, lt.getClass());
Literal l = (Literal) lt;
assertEquals(Long.MAX_VALUE, l.value());
assertEquals(DataType.LONG, l.dataType());
}
public void testLiteralLongNegative() {
Expression lt = parser.createExpression(String.valueOf(Long.MIN_VALUE));
assertTrue(lt.foldable());
assertEquals(Long.MIN_VALUE, lt.fold());
assertEquals(DataType.LONG, lt.dataType());
}
public void testLiteralLongPositive() {
Expression lt = parser.createExpression("+" + String.valueOf(Long.MAX_VALUE));
assertEquals(Literal.class, lt.getClass());
Literal l = (Literal) lt;
assertEquals(Long.MAX_VALUE, l.value());
assertEquals(DataType.LONG, l.dataType());
}
public void testLiteralInteger() {
Expression lt = parser.createExpression(String.valueOf(Integer.MAX_VALUE));
assertEquals(Literal.class, lt.getClass());
Literal l = (Literal) lt;
assertEquals(Integer.MAX_VALUE, l.value());
assertEquals(DataType.INTEGER, l.dataType());
}
public void testLiteralIntegerWithShortValue() {
Expression lt = parser.createExpression(String.valueOf(Short.MAX_VALUE));
assertEquals(Literal.class, lt.getClass());
Literal l = (Literal) lt;
assertEquals((int) Short.MAX_VALUE, l.value());
assertEquals(DataType.INTEGER, l.dataType());
}
public void testLiteralIntegerWithByteValue() {
Expression lt = parser.createExpression(String.valueOf(Byte.MAX_VALUE));
assertEquals(Literal.class, lt.getClass());
Literal l = (Literal) lt;
assertEquals((int) Byte.MAX_VALUE, l.value());
assertEquals(DataType.INTEGER, l.dataType());
}
public void testLiteralIntegerInvalid() {
ParsingException ex = expectThrows(ParsingException.class, () -> parser.createExpression("123456789098765432101"));
assertEquals("Number [123456789098765432101] is too large", ex.getErrorMessage());
}
public void testLiteralDecimalTooBig() {
ParsingException ex = expectThrows(ParsingException.class, () -> parser.createExpression("1.9976931348623157e+308"));
assertEquals("Number [1.9976931348623157e+308] is too large", ex.getErrorMessage());
}
public void testLiteralTimesLiteral() {
Expression expr = parser.createExpression("10*2");
assertEquals(Mul.class, expr.getClass());
Mul mul = (Mul) expr;
assertEquals("10 * 2", mul.name());
assertEquals(DataType.INTEGER, mul.dataType());
}
public void testFunctionTimesLiteral() {
Expression expr = parser.createExpression("PI()*2");
assertEquals(Mul.class, expr.getClass());
Mul mul = (Mul) expr;
assertEquals("(PI) * 2", mul.name());
}
public void testComplexArithmetic() {
Expression expr = parser.createExpression("-(((a-2)-(-3))+b)");
assertEquals(Neg.class, expr.getClass());
Neg neg = (Neg) expr;
assertThat(neg.name(), startsWith("-(((a) - 2) - -3) + (b)#"));
assertEquals(1, neg.children().size());
assertEquals(Add.class, neg.children().get(0).getClass());
Add add = (Add) neg.children().get(0);
assertEquals("(((a) - 2) - -3) + (b)", add.name());
assertEquals(2, add.children().size());
assertEquals("?b", add.children().get(1).toString());
assertEquals(Sub.class, add.children().get(0).getClass());
Sub sub1 = (Sub) add.children().get(0);
assertEquals("((a) - 2) - -3", sub1.name());
assertEquals(2, sub1.children().size());
assertEquals(Literal.class, sub1.children().get(1).getClass());
assertEquals("-3", ((Literal) sub1.children().get(1)).name());
assertEquals(Sub.class, sub1.children().get(0).getClass());
Sub sub2 = (Sub) sub1.children().get(0);
assertEquals(2, sub2.children().size());
assertEquals("?a", sub2.children().get(0).toString());
assertEquals(Literal.class, sub2.children().get(1).getClass());
assertEquals("2", ((Literal) sub2.children().get(1)).name());
}
public void testEquals() {
Expression expr = parser.createExpression("a = 10");
assertEquals(Equals.class, expr.getClass());
Equals eq = (Equals) expr;
assertEquals("(a) == 10", eq.name());
assertEquals(2, eq.children().size());
}
public void testNotEquals() {
Expression expr = parser.createExpression("a != 10");
assertEquals(NotEquals.class, expr.getClass());
NotEquals neq = (NotEquals) expr;
assertEquals("(a) != 10", neq.name());
assertEquals(2, neq.children().size());
}
public void testCastWithUnquotedDataType() {
Expression expr = parser.createExpression("CAST(10*2 AS long)");
assertEquals(Cast.class, expr.getClass());
Cast cast = (Cast) expr;
assertEquals(DataType.INTEGER, cast.from());
assertEquals(DataType.LONG, cast.to());
assertEquals(DataType.LONG, cast.dataType());
assertEquals(Mul.class, cast.field().getClass());
Mul mul = (Mul) cast.field();
assertEquals("10 * 2", mul.name());
assertEquals(DataType.INTEGER, mul.dataType());
}
public void testCastWithQuotedDataType() {
Expression expr = parser.createExpression("CAST(10*2 AS \"LonG\")");
assertEquals(Cast.class, expr.getClass());
Cast cast = (Cast) expr;
assertEquals(DataType.INTEGER, cast.from());
assertEquals(DataType.LONG, cast.to());
assertEquals(DataType.LONG, cast.dataType());
assertEquals(Mul.class, cast.field().getClass());
Mul mul = (Mul) cast.field();
assertEquals("10 * 2", mul.name());
assertEquals(DataType.INTEGER, mul.dataType());
}
public void testCastWithInvalidDataType() {
ParsingException ex = expectThrows(ParsingException.class, () -> parser.createExpression("CAST(1 AS INVALID)"));
assertEquals("line 1:12: Does not recognize type invalid", ex.getMessage());
}
public void testConvertWithUnquotedDataType() {
Expression expr = parser.createExpression("CONVERT(10*2, long)");
assertEquals(Cast.class, expr.getClass());
Cast cast = (Cast) expr;
assertEquals(DataType.INTEGER, cast.from());
assertEquals(DataType.LONG, cast.to());
assertEquals(DataType.LONG, cast.dataType());
assertEquals(Mul.class, cast.field().getClass());
Mul mul = (Mul) cast.field();
assertEquals("10 * 2", mul.name());
assertEquals(DataType.INTEGER, mul.dataType());
}
public void testConvertWithQuotedDataType() {
Expression expr = parser.createExpression("CONVERT(10*2, \"LonG\")");
assertEquals(Cast.class, expr.getClass());
Cast cast = (Cast) expr;
assertEquals(DataType.INTEGER, cast.from());
assertEquals(DataType.LONG, cast.to());
assertEquals(DataType.LONG, cast.dataType());
assertEquals(Mul.class, cast.field().getClass());
Mul mul = (Mul) cast.field();
assertEquals("10 * 2", mul.name());
assertEquals(DataType.INTEGER, mul.dataType());
}
public void testConvertWithUnquotedODBCDataType() {
Expression expr = parser.createExpression("CONVERT(1, Sql_BigInt)");
assertEquals(Cast.class, expr.getClass());
Cast cast = (Cast) expr;
assertEquals(DataType.INTEGER, cast.from());
assertEquals(DataType.LONG, cast.to());
assertEquals(DataType.LONG, cast.dataType());
}
public void testConvertWithQuotedODBCDataType() {
Expression expr = parser.createExpression("CONVERT(1, \"sql_BIGint\")");
assertEquals(Cast.class, expr.getClass());
Cast cast = (Cast) expr;
assertEquals(DataType.INTEGER, cast.from());
assertEquals(DataType.LONG, cast.to());
assertEquals(DataType.LONG, cast.dataType());
}
public void testConvertWithInvalidODBCDataType() {
ParsingException ex = expectThrows(ParsingException.class, () -> parser.createExpression("CONVERT(1, SQL_INVALID)"));
assertEquals("line 1:13: Invalid data type [SQL_INVALID] provided", ex.getMessage());
}
public void testConvertWithInvalidESDataType() {
ParsingException ex = expectThrows(ParsingException.class, () -> parser.createExpression("CONVERT(1, INVALID)"));
assertEquals("line 1:13: Invalid data type [INVALID] provided", ex.getMessage());
}
}