/* * Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH * under one or more contributor license agreements. See the NOTICE file * distributed with this work for additional information regarding copyright * ownership. Camunda licenses this file to you under the Apache License, * Version 2.0; you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://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.camunda.bpm.dmn.feel.impl.custom; import static org.assertj.core.api.Assertions.assertThat; import java.util.ArrayList; import java.util.List; import org.camunda.bpm.dmn.feel.impl.FeelEngine; import org.camunda.bpm.dmn.feel.impl.juel.FeelEngineFactoryImpl; import org.camunda.bpm.dmn.feel.impl.juel.transform.FeelToJuelFunctionTransformer; import org.camunda.bpm.engine.variable.VariableMap; import org.camunda.bpm.engine.variable.Variables; import org.junit.Before; import org.junit.Test; public class FeelEngineCustomFunctionTest { public static final String INPUT_VARIABLE = "input"; public FeelEngine feelEngine; public VariableMap variables; @Before public void initEngine() { variables = Variables.createVariables(); List<FeelToJuelFunctionTransformer> customFunctionTransformers = new ArrayList<FeelToJuelFunctionTransformer>(); customFunctionTransformers.add(new StartsWithFunctionTransformer()); FeelEngineFactoryImpl feelEngineFactory = new FeelEngineFactoryImpl(customFunctionTransformers); feelEngine = feelEngineFactory.createInstance(); } @Test public void testStringStartsWith() { assertEvaluatesToTrue("foobar", "starts with(\"foo\")"); assertEvaluatesToFalse("foobar", "starts with(\"foa\")"); assertEvaluatesToFalse("foobar", "starts with(\"afoo\")"); assertEvaluatesToTrue("foobar", "starts with(\"foobar\")"); assertEvaluatesToFalse("", "starts with(\"foobar\")"); assertEvaluatesToFalse(null, "starts with(\"foobar\")"); } public void assertEvaluatesToTrue(Object input, String feelExpression) { boolean result = evaluateFeel(input, feelExpression); assertThat(result).isTrue(); } public void assertEvaluatesToFalse(Object input, String feelExpression) { boolean result = evaluateFeel(input, feelExpression); assertThat(result).isFalse(); } public boolean evaluateFeel(Object input, String feelExpression) { variables.putValue(INPUT_VARIABLE, input); return feelEngine.evaluateSimpleUnaryTests(feelExpression, INPUT_VARIABLE, variables.asVariableContext()); } }