/*
* Copyright 2014 Attila Szegedi, Daniel Dekany, Jonathan Revusky
*
* 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
*
* 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 freemarker.test.utility;
import java.io.IOException;
import java.util.Map;
import freemarker.core.Environment;
import freemarker.core._CoreAPI;
import freemarker.template.TemplateBooleanModel;
import freemarker.template.TemplateDirectiveBody;
import freemarker.template.TemplateDirectiveModel;
import freemarker.template.TemplateException;
import freemarker.template.TemplateModel;
import freemarker.template.utility.ClassUtil;
public class AssertDirective implements TemplateDirectiveModel {
public static AssertDirective INSTANCE = new AssertDirective();
private static final String TEST_PARAM = "test";
private AssertDirective() { }
public void execute(Environment env, Map params, TemplateModel[] loopVars, TemplateDirectiveBody body)
throws TemplateException, IOException {
TemplateModel test = null;
for (Object paramEnt : params.entrySet()) {
Map.Entry<String, TemplateModel> param = (Map.Entry) paramEnt;
String paramName = param.getKey();
if (paramName.equals(TEST_PARAM)) {
test = param.getValue();
} else {
throw new UnsupportedParameterException(paramName, env);
}
}
if (test == null) {
throw new MissingRequiredParameterException(TEST_PARAM, env);
}
_CoreAPI.checkHasNoNestedContent(body);
if (!(test instanceof TemplateBooleanModel)) {
throw new AssertationFailedInTemplateException("Assertion failed:\n"
+ "The value had to be boolean, but it was of type" + ClassUtil.getFTLTypeDescription(test),
env);
}
if (!((TemplateBooleanModel) test).getAsBoolean()) {
throw new AssertationFailedInTemplateException("Assertion failed:\n"
+ "the value was false.",
env);
}
}
}