forked from spring-projects/spring-framework
/
EvaluationTests.java
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/
EvaluationTests.java
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/*
* Copyright 2002-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.expression.spel;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import org.junit.jupiter.api.Nested;
import org.junit.jupiter.api.Test;
import org.springframework.expression.AccessException;
import org.springframework.expression.BeanResolver;
import org.springframework.expression.EvaluationContext;
import org.springframework.expression.EvaluationException;
import org.springframework.expression.Expression;
import org.springframework.expression.ExpressionParser;
import org.springframework.expression.MethodFilter;
import org.springframework.expression.ParseException;
import org.springframework.expression.spel.standard.SpelExpression;
import org.springframework.expression.spel.standard.SpelExpressionParser;
import org.springframework.expression.spel.support.StandardEvaluationContext;
import org.springframework.expression.spel.support.StandardTypeLocator;
import org.springframework.expression.spel.testresources.TestPerson;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
import static org.assertj.core.api.Assertions.assertThatIllegalStateException;
import static org.assertj.core.api.Assertions.within;
/**
* Tests the evaluation of real expressions in a real context.
*
* @author Andy Clement
* @author Mark Fisher
* @author Sam Brannen
* @author Phillip Webb
* @author Giovanni Dall'Oglio Risso
* @since 3.0
*/
class EvaluationTests extends AbstractExpressionTests {
@Nested
class MiscellaneousTests {
@Test
void createListsOnAttemptToIndexNull01() throws EvaluationException, ParseException {
ExpressionParser parser = new SpelExpressionParser(new SpelParserConfiguration(true, true));
Expression e = parser.parseExpression("list[0]");
TestClass testClass = new TestClass();
Object o = e.getValue(new StandardEvaluationContext(testClass));
assertThat(o).isEqualTo("");
o = parser.parseExpression("list[3]").getValue(new StandardEvaluationContext(testClass));
assertThat(o).isEqualTo("");
assertThat(testClass.list.size()).isEqualTo(4);
assertThatExceptionOfType(EvaluationException.class).isThrownBy(() ->
parser.parseExpression("list2[3]").getValue(new StandardEvaluationContext(testClass)));
o = parser.parseExpression("foo[3]").getValue(new StandardEvaluationContext(testClass));
assertThat(o).isEqualTo("");
assertThat(testClass.getFoo().size()).isEqualTo(4);
}
@Test
void createMapsOnAttemptToIndexNull() {
TestClass testClass = new TestClass();
StandardEvaluationContext ctx = new StandardEvaluationContext(testClass);
ExpressionParser parser = new SpelExpressionParser(new SpelParserConfiguration(true, true));
Object o = parser.parseExpression("map['a']").getValue(ctx);
assertThat(o).isNull();
o = parser.parseExpression("map").getValue(ctx);
assertThat(o).isNotNull();
assertThatExceptionOfType(SpelEvaluationException.class).isThrownBy(() ->
parser.parseExpression("map2['a']").getValue(ctx));
// map2 should be null, there is no setter
}
// wibble2 should be null (cannot be initialized dynamically), there is no setter
@Test
void createObjectsOnAttemptToReferenceNull() {
TestClass testClass = new TestClass();
StandardEvaluationContext ctx = new StandardEvaluationContext(testClass);
ExpressionParser parser = new SpelExpressionParser(new SpelParserConfiguration(true, true));
Object o = parser.parseExpression("wibble.bar").getValue(ctx);
assertThat(o).isEqualTo("hello");
o = parser.parseExpression("wibble").getValue(ctx);
assertThat(o).isNotNull();
assertThatExceptionOfType(SpelEvaluationException.class).isThrownBy(() ->
parser.parseExpression("wibble2.bar").getValue(ctx));
}
@Test
void elvisOperator() {
evaluate("'Andy'?:'Dave'", "Andy", String.class);
evaluate("null?:'Dave'", "Dave", String.class);
}
@Test
void safeNavigation() {
evaluate("null?.null?.null", null, null);
}
@Test // SPR-16731
void matchesWithPatternAccessThreshold() {
String pattern = "^(?=[a-z0-9-]{1,47})([a-z0-9]+[-]{0,1}){1,47}[a-z0-9]{1}$";
String expression = "'abcde-fghijklmn-o42pasdfasdfasdf.qrstuvwxyz10x.xx.yyy.zasdfasfd' matches \'" + pattern + "\'";
Expression expr = parser.parseExpression(expression);
assertThatExceptionOfType(SpelEvaluationException.class)
.isThrownBy(expr::getValue)
.withCauseInstanceOf(IllegalStateException.class)
.satisfies(ex -> assertThat(ex.getMessageCode()).isEqualTo(SpelMessage.FLAWED_PATTERN));
}
// mixing operators
@Test
void mixingOperators() {
evaluate("true and 5>3", "true", Boolean.class);
}
// assignment
@Test
void assignmentToVariables() {
evaluate("#var1='value1'", "value1", String.class);
}
@Test
void operatorVariants() {
SpelExpression e = (SpelExpression) parser.parseExpression("#a < #b");
EvaluationContext ctx = new StandardEvaluationContext();
ctx.setVariable("a", (short) 3);
ctx.setVariable("b", (short) 6);
assertThat(e.getValue(ctx, Boolean.class)).isTrue();
ctx.setVariable("b", (byte) 6);
assertThat(e.getValue(ctx, Boolean.class)).isTrue();
ctx.setVariable("a", (byte) 9);
ctx.setVariable("b", (byte) 6);
assertThat(e.getValue(ctx, Boolean.class)).isFalse();
ctx.setVariable("a", 10L);
ctx.setVariable("b", (short) 30);
assertThat(e.getValue(ctx, Boolean.class)).isTrue();
ctx.setVariable("a", (byte) 3);
ctx.setVariable("b", (short) 30);
assertThat(e.getValue(ctx, Boolean.class)).isTrue();
ctx.setVariable("a", (byte) 3);
ctx.setVariable("b", 30L);
assertThat(e.getValue(ctx, Boolean.class)).isTrue();
ctx.setVariable("a", (byte) 3);
ctx.setVariable("b", 30f);
assertThat(e.getValue(ctx, Boolean.class)).isTrue();
ctx.setVariable("a", new BigInteger("10"));
ctx.setVariable("b", new BigInteger("20"));
assertThat(e.getValue(ctx, Boolean.class)).isTrue();
}
@Test
void indexer03() {
evaluate("'christian'[8]", "n", String.class);
}
@Test
void indexerError() {
evaluateAndCheckError("new org.springframework.expression.spel.testresources.Inventor().inventions[1]",
SpelMessage.CANNOT_INDEX_INTO_NULL_VALUE);
}
@Test
void stringType() {
evaluateAndAskForReturnType("getPlaceOfBirth().getCity()", "SmilJan", String.class);
}
@Test
void numbers() {
evaluateAndAskForReturnType("3*4+5", 17, Integer.class);
evaluateAndAskForReturnType("3*4+5", 17L, Long.class);
evaluateAndAskForReturnType("65", 'A', Character.class);
evaluateAndAskForReturnType("3*4+5", (short) 17, Short.class);
evaluateAndAskForReturnType("3*4+5", "17", String.class);
}
@Test
void advancedNumerics() {
int twentyFour = parser.parseExpression("2.0 * 3e0 * 4").getValue(Integer.class);
assertThat(twentyFour).isEqualTo(24);
double one = parser.parseExpression("8.0 / 5e0 % 2").getValue(Double.class);
assertThat((float) one).isCloseTo((float) 1.6d, within((float) 0d));
int o = parser.parseExpression("8.0 / 5e0 % 2").getValue(Integer.class);
assertThat(o).isEqualTo(1);
int sixteen = parser.parseExpression("-2 ^ 4").getValue(Integer.class);
assertThat(sixteen).isEqualTo(16);
int minusFortyFive = parser.parseExpression("1+2-3*8^2/2/2").getValue(Integer.class);
assertThat(minusFortyFive).isEqualTo(-45);
}
@Test
void comparison() {
EvaluationContext context = TestScenarioCreator.getTestEvaluationContext();
boolean trueValue = parser.parseExpression("T(java.util.Date) == Birthdate.Class").getValue(
context, Boolean.class);
assertThat(trueValue).isTrue();
}
@Test
void resolvingList() {
StandardEvaluationContext context = TestScenarioCreator.getTestEvaluationContext();
assertThatExceptionOfType(EvaluationException.class).isThrownBy(() ->
parser.parseExpression("T(List)!=null").getValue(context, Boolean.class));
((StandardTypeLocator) context.getTypeLocator()).registerImport("java.util");
assertThat(parser.parseExpression("T(List)!=null").getValue(context, Boolean.class)).isTrue();
}
@Test
void resolvingString() {
Class<?> stringClass = parser.parseExpression("T(String)").getValue(Class.class);
assertThat(stringClass).isEqualTo(String.class);
}
/**
* SPR-6984: attempting to index a collection on write using an index that
* doesn't currently exist in the collection (address.crossStreets[0] below)
*/
@Test
void initializingCollectionElementsOnWrite() {
TestPerson person = new TestPerson();
EvaluationContext context = new StandardEvaluationContext(person);
SpelParserConfiguration config = new SpelParserConfiguration(true, true);
ExpressionParser parser = new SpelExpressionParser(config);
Expression e = parser.parseExpression("name");
e.setValue(context, "Oleg");
assertThat(person.getName()).isEqualTo("Oleg");
e = parser.parseExpression("address.street");
e.setValue(context, "123 High St");
assertThat(person.getAddress().getStreet()).isEqualTo("123 High St");
e = parser.parseExpression("address.crossStreets[0]");
e.setValue(context, "Blah");
assertThat(person.getAddress().getCrossStreets().get(0)).isEqualTo("Blah");
e = parser.parseExpression("address.crossStreets[3]");
e.setValue(context, "Wibble");
assertThat(person.getAddress().getCrossStreets().get(0)).isEqualTo("Blah");
assertThat(person.getAddress().getCrossStreets().get(3)).isEqualTo("Wibble");
}
/**
* Verifies behavior requested in SPR-9613.
*/
@Test
void caseInsensitiveNullLiterals() {
ExpressionParser parser = new SpelExpressionParser();
Expression e = parser.parseExpression("null");
assertThat(e.getValue()).isNull();
e = parser.parseExpression("NULL");
assertThat(e.getValue()).isNull();
e = parser.parseExpression("NuLl");
assertThat(e.getValue()).isNull();
}
/**
* Verifies behavior requested in SPR-9621.
*/
@Test
void customMethodFilter() {
StandardEvaluationContext context = new StandardEvaluationContext();
// Register a custom MethodResolver...
context.setMethodResolvers(Arrays.asList((evaluationContext, targetObject, name, argumentTypes) -> null));
// or simply...
// context.setMethodResolvers(new ArrayList<MethodResolver>());
// Register a custom MethodFilter...
MethodFilter methodFilter = methods -> null;
assertThatIllegalStateException()
.isThrownBy(() -> context.registerMethodFilter(String.class, methodFilter))
.withMessage("Method filter cannot be set as the reflective method resolver is not in use");
}
/**
* This test is checking that with the changes for 9751 that the refactoring in Indexer is
* coping correctly for references beyond collection boundaries.
*/
@Test
void collectionGrowingViaIndexer() {
Spr9751 instance = new Spr9751();
// Add a new element to the list
StandardEvaluationContext ctx = new StandardEvaluationContext(instance);
ExpressionParser parser = new SpelExpressionParser(new SpelParserConfiguration(true, true));
Expression e = parser.parseExpression("listOfStrings[++index3]='def'");
e.getValue(ctx);
assertThat(instance.listOfStrings.size()).isEqualTo(2);
assertThat(instance.listOfStrings.get(1)).isEqualTo("def");
// Check reference beyond end of collection
ctx = new StandardEvaluationContext(instance);
parser = new SpelExpressionParser(new SpelParserConfiguration(true, true));
e = parser.parseExpression("listOfStrings[0]");
String value = e.getValue(ctx, String.class);
assertThat(value).isEqualTo("abc");
e = parser.parseExpression("listOfStrings[1]");
value = e.getValue(ctx, String.class);
assertThat(value).isEqualTo("def");
e = parser.parseExpression("listOfStrings[2]");
value = e.getValue(ctx, String.class);
assertThat(value).isEqualTo("");
// Now turn off growing and reference off the end
StandardEvaluationContext failCtx = new StandardEvaluationContext(instance);
parser = new SpelExpressionParser(new SpelParserConfiguration(false, false));
Expression failExp = parser.parseExpression("listOfStrings[3]");
assertThatExceptionOfType(SpelEvaluationException.class).isThrownBy(() ->
failExp.getValue(failCtx, String.class))
.satisfies(ex -> assertThat(ex.getMessageCode()).isEqualTo(SpelMessage.COLLECTION_INDEX_OUT_OF_BOUNDS));
}
@Test
void limitCollectionGrowing() {
TestClass instance = new TestClass();
StandardEvaluationContext ctx = new StandardEvaluationContext(instance);
SpelExpressionParser parser = new SpelExpressionParser( new SpelParserConfiguration(true, true, 3));
Expression e = parser.parseExpression("foo[2]");
e.setValue(ctx, "2");
assertThat(instance.getFoo().size()).isEqualTo(3);
e = parser.parseExpression("foo[3]");
try {
e.setValue(ctx, "3");
}
catch (SpelEvaluationException see) {
assertThat(see.getMessageCode()).isEqualTo(SpelMessage.UNABLE_TO_GROW_COLLECTION);
assertThat(instance.getFoo().size()).isEqualTo(3);
}
}
}
@Nested
class RelationalOperatorTests {
@Test
void relOperatorGT() {
evaluate("3 > 6", "false", Boolean.class);
}
@Test
void relOperatorLT() {
evaluate("3 < 6", "true", Boolean.class);
}
@Test
void relOperatorLE() {
evaluate("3 <= 6", "true", Boolean.class);
}
@Test
void relOperatorGE01() {
evaluate("3 >= 6", "false", Boolean.class);
}
@Test
void relOperatorGE02() {
evaluate("3 >= 3", "true", Boolean.class);
}
@Test
void relOperatorsInstanceof01() {
evaluate("'xyz' instanceof T(int)", "false", Boolean.class);
}
@Test
void relOperatorsInstanceof04() {
evaluate("null instanceof T(String)", "false", Boolean.class);
}
@Test
void relOperatorsInstanceof05() {
evaluate("null instanceof T(Integer)", "false", Boolean.class);
}
@Test
void relOperatorsInstanceof06() {
evaluateAndCheckError("'A' instanceof null", SpelMessage.INSTANCEOF_OPERATOR_NEEDS_CLASS_OPERAND, 15, "null");
}
@Test
void relOperatorsMatches01() {
evaluate("'5.0067' matches '^-?\\d+(\\.\\d{2})?$'", "false", Boolean.class);
}
@Test
void relOperatorsMatches02() {
evaluate("'5.00' matches '^-?\\d+(\\.\\d{2})?$'", "true", Boolean.class);
}
@Test
void relOperatorsMatches03() {
evaluateAndCheckError("null matches '^.*$'", SpelMessage.INVALID_FIRST_OPERAND_FOR_MATCHES_OPERATOR, 0, null);
}
@Test
void relOperatorsMatches04() {
evaluateAndCheckError("'abc' matches null", SpelMessage.INVALID_SECOND_OPERAND_FOR_MATCHES_OPERATOR, 14, null);
}
@Test
void relOperatorsMatches05() {
evaluate("27 matches '^.*2.*$'", true, Boolean.class); // conversion int>string
}
}
@Nested
class PropertyAccessTests {
@Test
void propertyField() {
evaluate("name", "Nikola Tesla", String.class, false);
// not writable because (1) name is private (2) there is no setter, only a getter
evaluateAndCheckError("madeup", SpelMessage.PROPERTY_OR_FIELD_NOT_READABLE, 0, "madeup",
"org.springframework.expression.spel.testresources.Inventor");
}
@Test
void propertyField_SPR7100() {
evaluate("_name", "Nikola Tesla", String.class);
evaluate("_name_", "Nikola Tesla", String.class);
}
@Test
void rogueTrailingDotCausesNPE_SPR6866() {
assertThatExceptionOfType(SpelParseException.class).isThrownBy(() ->
new SpelExpressionParser().parseExpression("placeOfBirth.foo."))
.satisfies(ex -> {
assertThat(ex.getMessageCode()).isEqualTo(SpelMessage.OOD);
assertThat(ex.getPosition()).isEqualTo(16);
});
}
@Nested
class NestedPropertiesTests {
// nested properties
@Test
void propertiesNested01() {
evaluate("placeOfBirth.city", "SmilJan", String.class, true);
}
@Test
void propertiesNested02() {
evaluate("placeOfBirth.doubleIt(12)", "24", Integer.class);
}
@Test
void propertiesNested03() throws ParseException {
assertThatExceptionOfType(SpelParseException.class).isThrownBy(() ->
new SpelExpressionParser().parseRaw("placeOfBirth.23"))
.satisfies(ex -> {
assertThat(ex.getMessageCode()).isEqualTo(SpelMessage.UNEXPECTED_DATA_AFTER_DOT);
assertThat(ex.getInserts()[0]).isEqualTo("23");
});
}
}
}
@Nested
class MethodAndConstructorTests {
@Test
void methods01() {
evaluate("echo(12)", "12", String.class);
}
@Test
void methods02() {
evaluate("echo(name)", "Nikola Tesla", String.class);
}
@Test
void constructorInvocation01() {
evaluate("new String('hello')", "hello", String.class);
}
@Test
void constructorInvocation05() {
evaluate("new java.lang.String('foobar')", "foobar", String.class);
}
@Test
void constructorInvocation06() {
// repeated evaluation to drive use of cached executor
SpelExpression e = (SpelExpression) parser.parseExpression("new String('wibble')");
String newString = e.getValue(String.class);
assertThat(newString).isEqualTo("wibble");
newString = e.getValue(String.class);
assertThat(newString).isEqualTo("wibble");
// not writable
assertThat(e.isWritable(new StandardEvaluationContext())).isFalse();
// ast
assertThat(e.toStringAST()).isEqualTo("new String('wibble')");
}
}
@Nested
class UnaryOperatorTests {
@Test
void unaryMinus() {
evaluate("-5", "-5", Integer.class);
}
@Test
void unaryPlus() {
evaluate("+5", "5", Integer.class);
}
@Test
void unaryNot01() {
evaluate("!true", "false", Boolean.class);
}
@Test
void unaryNot02() {
evaluate("!false", "true", Boolean.class);
}
@Test
void unaryNotWithNullValue() {
assertThatExceptionOfType(EvaluationException.class)
.isThrownBy(parser.parseExpression("!null")::getValue);
}
}
@Nested
class BinaryOperatorTests {
@Test
void andWithNullValueOnLeft() {
assertThatExceptionOfType(EvaluationException.class).isThrownBy(
parser.parseExpression("null and true")::getValue);
}
@Test
void andWithNullValueOnRight() {
assertThatExceptionOfType(EvaluationException.class).isThrownBy(
parser.parseExpression("true and null")::getValue);
}
@Test
void orWithNullValueOnLeft() {
assertThatExceptionOfType(EvaluationException.class).isThrownBy(
parser.parseExpression("null or false")::getValue);
}
@Test
void orWithNullValueOnRight() {
assertThatExceptionOfType(EvaluationException.class).isThrownBy(
parser.parseExpression("false or null")::getValue);
}
}
@Nested
class TernaryOperatorTests {
@Test
void ternaryOperator01() {
evaluate("2>4?1:2", 2, Integer.class);
}
@Test
void ternaryOperator02() {
evaluate("'abc'=='abc'?1:2", 1, Integer.class);
}
@Test
void ternaryOperator03() {
// cannot convert String to boolean
evaluateAndCheckError("'hello'?1:2", SpelMessage.TYPE_CONVERSION_ERROR);
}
@Test
void ternaryOperator04() {
Expression e = parser.parseExpression("1>2?3:4");
assertThat(e.isWritable(context)).isFalse();
}
@Test
void ternaryOperator05() {
evaluate("1>2?#var=4:#var=5", 5, Integer.class);
evaluate("3?:#var=5", 3, Integer.class);
evaluate("null?:#var=5", 5, Integer.class);
evaluate("2>4?(3>2?true:false):(5<3?true:false)", false, Boolean.class);
}
@Test
void ternaryOperatorWithNullValue() {
assertThatExceptionOfType(EvaluationException.class).isThrownBy(
parser.parseExpression("null ? 0 : 1")::getValue);
}
}
@Nested
class MethodConstructorAndFunctionInvocationTests {
@Test
void methodCallWithRootReferenceThroughParameter() {
evaluate("placeOfBirth.doubleIt(inventions.length)", 18, Integer.class);
}
@Test
void ctorCallWithRootReferenceThroughParameter() {
evaluate("new org.springframework.expression.spel.testresources.PlaceOfBirth(inventions[0].toString()).city",
"Telephone repeater", String.class);
}
@Test
void fnCallWithRootReferenceThroughParameter() {
evaluate("#reverseInt(inventions.length, inventions.length, inventions.length)", "int[3]{9,9,9}", int[].class);
}
@Test
void methodCallWithRootReferenceThroughParameterThatIsAFunctionCall() {
evaluate("placeOfBirth.doubleIt(#reverseInt(inventions.length,2,3)[2])", 18, Integer.class);
}
}
@Nested
class VariableAndFunctionAccessTests {
@Test
void variableAccess() {
evaluate("#answer", "42", Integer.class, true);
}
@Test
void functionAccess() {
evaluate("#reverseInt(1,2,3)", "int[3]{3,2,1}", int[].class);
evaluate("#reverseString('hello')", "olleh", String.class);
}
}
@Nested
class TypeReferenceTests {
@Test
void typeReferences() {
evaluate("T(java.lang.String)", "class java.lang.String", Class.class);
evaluate("T(String)", "class java.lang.String", Class.class);
}
@Test
void typeReferencesAndQualifiedIdentifierCaching() {
SpelExpression e = (SpelExpression) parser.parseExpression("T(java.lang.String)");
assertThat(e.isWritable(new StandardEvaluationContext())).isFalse();
assertThat(e.toStringAST()).isEqualTo("T(java.lang.String)");
assertThat(e.getValue(Class.class)).isEqualTo(String.class);
// use cached QualifiedIdentifier:
assertThat(e.toStringAST()).isEqualTo("T(java.lang.String)");
assertThat(e.getValue(Class.class)).isEqualTo(String.class);
}
@Test
void typeReferencesPrimitive() {
evaluate("T(int)", "int", Class.class);
evaluate("T(byte)", "byte", Class.class);
evaluate("T(char)", "char", Class.class);
evaluate("T(boolean)", "boolean", Class.class);
evaluate("T(long)", "long", Class.class);
evaluate("T(short)", "short", Class.class);
evaluate("T(double)", "double", Class.class);
evaluate("T(float)", "float", Class.class);
}
@Test
void staticMethodReferences() {
evaluate("T(java.awt.Color).green.getRGB() != 0", true, Boolean.class);
evaluate("(T(java.lang.Math).random() * 100.0 ) > 0", true, Boolean.class);
evaluate("(T(Math).random() * 100.0) > 0", true, Boolean.class);
evaluate("T(Character).isUpperCase('Test'.charAt(0)) ? 'uppercase' : 'lowercase'", "uppercase", String.class);
evaluate("T(Character).isUpperCase('Test'.charAt(1)) ? 'uppercase' : 'lowercase'", "lowercase", String.class);
}
}
@Nested
class IncrementAndDecrementTests {
// For now I am making #this not assignable
@Test
void increment01root() {
Integer i = 42;
StandardEvaluationContext ctx = new StandardEvaluationContext(i);
ExpressionParser parser = new SpelExpressionParser(new SpelParserConfiguration(true, true));
Expression e = parser.parseExpression("#this++");
assertThat(i.intValue()).isEqualTo(42);
assertThatExceptionOfType(SpelEvaluationException.class).isThrownBy(() ->
e.getValue(ctx, Integer.class))
.satisfies(ex -> assertThat(ex.getMessageCode()).isEqualTo(SpelMessage.NOT_ASSIGNABLE));
}
@Test
void increment02postfix() {
Spr9751 helper = new Spr9751();
StandardEvaluationContext ctx = new StandardEvaluationContext(helper);
ExpressionParser parser = new SpelExpressionParser(new SpelParserConfiguration(true, true));
Expression e;
// BigDecimal
e = parser.parseExpression("bd++");
assertThat(new BigDecimal("2").equals(helper.bd)).isTrue();
BigDecimal return_bd = e.getValue(ctx, BigDecimal.class);
assertThat(new BigDecimal("2").equals(return_bd)).isTrue();
assertThat(new BigDecimal("3").equals(helper.bd)).isTrue();
// double
e = parser.parseExpression("ddd++");
assertThat((float) helper.ddd).isCloseTo((float) 2.0d, within((float) 0d));
double return_ddd = e.getValue(ctx, Double.TYPE);
assertThat((float) return_ddd).isCloseTo((float) 2.0d, within((float) 0d));
assertThat((float) helper.ddd).isCloseTo((float) 3.0d, within((float) 0d));
// float
e = parser.parseExpression("fff++");
assertThat(helper.fff).isCloseTo(3.0f, within((float) 0d));
float return_fff = e.getValue(ctx, Float.TYPE);
assertThat(return_fff).isCloseTo(3.0f, within((float) 0d));
assertThat(helper.fff).isCloseTo(4.0f, within((float) 0d));
// long
e = parser.parseExpression("lll++");
assertThat(helper.lll).isEqualTo(66666L);
long return_lll = e.getValue(ctx, Long.TYPE);
assertThat(return_lll).isEqualTo(66666L);
assertThat(helper.lll).isEqualTo(66667L);
// int
e = parser.parseExpression("iii++");
assertThat(helper.iii).isEqualTo(42);
int return_iii = e.getValue(ctx, Integer.TYPE);
assertThat(return_iii).isEqualTo(42);
assertThat(helper.iii).isEqualTo(43);
return_iii = e.getValue(ctx, Integer.TYPE);
assertThat(return_iii).isEqualTo(43);
assertThat(helper.iii).isEqualTo(44);
// short
e = parser.parseExpression("sss++");
assertThat(helper.sss).isEqualTo((short) 15);
short return_sss = e.getValue(ctx, Short.TYPE);
assertThat(return_sss).isEqualTo((short) 15);
assertThat(helper.sss).isEqualTo((short) 16);
}
@Test
void increment02prefix() {
Spr9751 helper = new Spr9751();
StandardEvaluationContext ctx = new StandardEvaluationContext(helper);
ExpressionParser parser = new SpelExpressionParser(new SpelParserConfiguration(true, true));
Expression e;
// BigDecimal
e = parser.parseExpression("++bd");
assertThat(new BigDecimal("2").equals(helper.bd)).isTrue();
BigDecimal return_bd = e.getValue(ctx, BigDecimal.class);
assertThat(new BigDecimal("3").equals(return_bd)).isTrue();
assertThat(new BigDecimal("3").equals(helper.bd)).isTrue();
// double
e = parser.parseExpression("++ddd");
assertThat((float) helper.ddd).isCloseTo((float) 2.0d, within((float) 0d));
double return_ddd = e.getValue(ctx, Double.TYPE);
assertThat((float) return_ddd).isCloseTo((float) 3.0d, within((float) 0d));
assertThat((float) helper.ddd).isCloseTo((float) 3.0d, within((float) 0d));
// float
e = parser.parseExpression("++fff");
assertThat(helper.fff).isCloseTo(3.0f, within((float) 0d));
float return_fff = e.getValue(ctx, Float.TYPE);
assertThat(return_fff).isCloseTo(4.0f, within((float) 0d));
assertThat(helper.fff).isCloseTo(4.0f, within((float) 0d));
// long
e = parser.parseExpression("++lll");
assertThat(helper.lll).isEqualTo(66666L);
long return_lll = e.getValue(ctx, Long.TYPE);
assertThat(return_lll).isEqualTo(66667L);
assertThat(helper.lll).isEqualTo(66667L);
// int
e = parser.parseExpression("++iii");
assertThat(helper.iii).isEqualTo(42);
int return_iii = e.getValue(ctx, Integer.TYPE);
assertThat(return_iii).isEqualTo(43);
assertThat(helper.iii).isEqualTo(43);
return_iii = e.getValue(ctx, Integer.TYPE);
assertThat(return_iii).isEqualTo(44);
assertThat(helper.iii).isEqualTo(44);
// short
e = parser.parseExpression("++sss");
assertThat(helper.sss).isEqualTo((short) 15);
int return_sss = (Integer) e.getValue(ctx);
assertThat(return_sss).isEqualTo((short) 16);
assertThat(helper.sss).isEqualTo((short) 16);
}
@Test
void increment03() {
Spr9751 helper = new Spr9751();
StandardEvaluationContext ctx = new StandardEvaluationContext(helper);
ExpressionParser parser = new SpelExpressionParser(new SpelParserConfiguration(true, true));
Expression e1 = parser.parseExpression("m()++");
assertThatExceptionOfType(SpelEvaluationException.class).isThrownBy(() ->
e1.getValue(ctx, Double.TYPE))
.satisfies(ex -> assertThat(ex.getMessageCode()).isEqualTo(SpelMessage.OPERAND_NOT_INCREMENTABLE));
Expression e2 = parser.parseExpression("++m()");
assertThatExceptionOfType(SpelEvaluationException.class).isThrownBy(() ->
e2.getValue(ctx, Double.TYPE))
.satisfies(ex -> assertThat(ex.getMessageCode()).isEqualTo(SpelMessage.OPERAND_NOT_INCREMENTABLE));
}
@Test
void increment04() {
Integer i = 42;
StandardEvaluationContext ctx = new StandardEvaluationContext(i);
ExpressionParser parser = new SpelExpressionParser(new SpelParserConfiguration(true, true));
Expression e1 = parser.parseExpression("++1");
assertThatExceptionOfType(SpelEvaluationException.class).isThrownBy(() ->
e1.getValue(ctx, Double.TYPE))
.satisfies(ex -> assertThat(ex.getMessageCode()).isEqualTo(SpelMessage.NOT_ASSIGNABLE));
Expression e2 = parser.parseExpression("1++");
assertThatExceptionOfType(SpelEvaluationException.class).isThrownBy(() ->
e2.getValue(ctx, Double.TYPE))
.satisfies(ex -> assertThat(ex.getMessageCode()).isEqualTo(SpelMessage.NOT_ASSIGNABLE));
}
@Test
void decrement01root() {
Integer i = 42;
StandardEvaluationContext ctx = new StandardEvaluationContext(i);
ExpressionParser parser = new SpelExpressionParser(new SpelParserConfiguration(true, true));
Expression e = parser.parseExpression("#this--");
assertThat(i.intValue()).isEqualTo(42);
assertThatExceptionOfType(SpelEvaluationException.class).isThrownBy(() ->
e.getValue(ctx, Integer.class))
.satisfies(ex -> assertThat(ex.getMessageCode()).isEqualTo(SpelMessage.NOT_ASSIGNABLE));
}
@Test
void decrement02postfix() {
Spr9751 helper = new Spr9751();
StandardEvaluationContext ctx = new StandardEvaluationContext(helper);
ExpressionParser parser = new SpelExpressionParser(new SpelParserConfiguration(true, true));
Expression e;
// BigDecimal
e = parser.parseExpression("bd--");
assertThat(new BigDecimal("2").equals(helper.bd)).isTrue();
BigDecimal return_bd = e.getValue(ctx,BigDecimal.class);
assertThat(new BigDecimal("2").equals(return_bd)).isTrue();
assertThat(new BigDecimal("1").equals(helper.bd)).isTrue();
// double
e = parser.parseExpression("ddd--");
assertThat((float) helper.ddd).isCloseTo((float) 2.0d, within((float) 0d));
double return_ddd = e.getValue(ctx, Double.TYPE);
assertThat((float) return_ddd).isCloseTo((float) 2.0d, within((float) 0d));
assertThat((float) helper.ddd).isCloseTo((float) 1.0d, within((float) 0d));
// float
e = parser.parseExpression("fff--");
assertThat(helper.fff).isCloseTo(3.0f, within((float) 0d));
float return_fff = e.getValue(ctx, Float.TYPE);
assertThat(return_fff).isCloseTo(3.0f, within((float) 0d));
assertThat(helper.fff).isCloseTo(2.0f, within((float) 0d));
// long
e = parser.parseExpression("lll--");
assertThat(helper.lll).isEqualTo(66666L);
long return_lll = e.getValue(ctx, Long.TYPE);
assertThat(return_lll).isEqualTo(66666L);
assertThat(helper.lll).isEqualTo(66665L);
// int
e = parser.parseExpression("iii--");
assertThat(helper.iii).isEqualTo(42);
int return_iii = e.getValue(ctx, Integer.TYPE);
assertThat(return_iii).isEqualTo(42);
assertThat(helper.iii).isEqualTo(41);
return_iii = e.getValue(ctx, Integer.TYPE);
assertThat(return_iii).isEqualTo(41);
assertThat(helper.iii).isEqualTo(40);
// short
e = parser.parseExpression("sss--");
assertThat(helper.sss).isEqualTo((short) 15);
short return_sss = e.getValue(ctx, Short.TYPE);
assertThat(return_sss).isEqualTo((short) 15);
assertThat(helper.sss).isEqualTo((short) 14);
}
@Test
void decrement02prefix() {
Spr9751 helper = new Spr9751();
StandardEvaluationContext ctx = new StandardEvaluationContext(helper);
ExpressionParser parser = new SpelExpressionParser(new SpelParserConfiguration(true, true));
Expression e;
// BigDecimal
e = parser.parseExpression("--bd");
assertThat(new BigDecimal("2").equals(helper.bd)).isTrue();
BigDecimal return_bd = e.getValue(ctx,BigDecimal.class);
assertThat(new BigDecimal("1").equals(return_bd)).isTrue();
assertThat(new BigDecimal("1").equals(helper.bd)).isTrue();
// double
e = parser.parseExpression("--ddd");
assertThat((float) helper.ddd).isCloseTo((float) 2.0d, within((float) 0d));
double return_ddd = e.getValue(ctx, Double.TYPE);
assertThat((float) return_ddd).isCloseTo((float) 1.0d, within((float) 0d));
assertThat((float) helper.ddd).isCloseTo((float) 1.0d, within((float) 0d));
// float
e = parser.parseExpression("--fff");
assertThat(helper.fff).isCloseTo(3.0f, within((float) 0d));
float return_fff = e.getValue(ctx, Float.TYPE);
assertThat(return_fff).isCloseTo(2.0f, within((float) 0d));
assertThat(helper.fff).isCloseTo(2.0f, within((float) 0d));
// long
e = parser.parseExpression("--lll");
assertThat(helper.lll).isEqualTo(66666L);
long return_lll = e.getValue(ctx, Long.TYPE);
assertThat(return_lll).isEqualTo(66665L);
assertThat(helper.lll).isEqualTo(66665L);
// int
e = parser.parseExpression("--iii");
assertThat(helper.iii).isEqualTo(42);
int return_iii = e.getValue(ctx, Integer.TYPE);
assertThat(return_iii).isEqualTo(41);
assertThat(helper.iii).isEqualTo(41);
return_iii = e.getValue(ctx, Integer.TYPE);
assertThat(return_iii).isEqualTo(40);
assertThat(helper.iii).isEqualTo(40);
// short
e = parser.parseExpression("--sss");
assertThat(helper.sss).isEqualTo((short) 15);
int return_sss = (Integer)e.getValue(ctx);
assertThat(return_sss).isEqualTo(14);
assertThat(helper.sss).isEqualTo((short) 14);
}
@Test
void decrement03() {
Spr9751 helper = new Spr9751();
StandardEvaluationContext ctx = new StandardEvaluationContext(helper);
ExpressionParser parser = new SpelExpressionParser(new SpelParserConfiguration(true, true));
Expression e1 = parser.parseExpression("m()--");
assertThatExceptionOfType(SpelEvaluationException.class).isThrownBy(() ->
e1.getValue(ctx, Double.TYPE))