com.thoughtworks.selenium.condition.Condition Maven / Gradle / Ivy
/*
* Copyright 2008 ThoughtWorks, Inc.
*
* 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 com.thoughtworks.selenium.condition;
import java.lang.reflect.Method;
import java.lang.reflect.InvocationTargetException;
/**
* Simple predicate class, which also knows how to wait for the condition to be true.
* Used by Selenium tests.
*
* Conditions have two basic properties:
*
*
* - a message (purely used for displaying purposes)
*
- an implementation of
* {@link #isTrue(com.google.testing.selenium.condition.ConditionRunner.Context)}
*
*/
public abstract class Condition {
private final String message;
public abstract boolean isTrue(ConditionRunner.Context runner);
/**
* Creates an instance of Condition with is canonical name as message
*/
public Condition() {
this.message = getClass().getCanonicalName();
}
/**
* Creates an instance of Condition with the given {@code message} and
* {@code args}, which are in the {@link String#format(String, Object...)}
* modeal.
*/
public Condition(String message, Object[] args) {
if (null == message) {
throw new NullPointerException("Condition names must not be null");
}
// this.message = String.format(message, args);
this.message = simulateStringDotFormatMethod(message, args);
}
private String simulateStringDotFormatMethod(String message, Object[] args) {
int vers = Integer.parseInt(System.getProperty("java.class.version").substring(0, 2));
if (vers >= 49) {
try {
Method format = String.class.getMethod("format", new Class[]{String.class, Object[].class});
return (String) format.invoke(null, new Object[]{message, args});
} catch (NoSuchMethodException e) {
} catch (IllegalAccessException e) {
} catch (InvocationTargetException e) {
Throwable throwable = e.getCause();
if (throwable instanceof RuntimeException) {
throw (RuntimeException) throwable;
}
}
throw new RuntimeException("String.format(..) can't be that hard to call");
} else {
String msg = "";
msg = message;
for (int i = 0; i < args.length; i++) {
msg = msg + " " + args[i];
}
return msg;
}
}
// drop these for var-args in another year.
public Condition(String message) {
this(message, new Object[0]);
}
public Condition(String message, Object arg) {
this(message, new Object[]{arg});
}
public Condition(String message, Object arg0, Object arg1) {
this(message, new Object[]{arg0, arg1});
}
public Condition(String message, Object arg0, Object arg1, Object arg2) {
this(message, new Object[]{arg0, arg1, arg2});
}
public Condition(String message, Object arg0, Object arg1, Object arg2, Object arg3) {
this(message, new Object[]{arg0, arg1, arg2, arg3});
}
public Condition(String message, Object arg0, Object arg1, Object arg2, Object arg3, Object arg4) {
this(message, new Object[]{arg0, arg1, arg2, arg3, arg4});
}
public String getMessage() {
return toString();
}
public String toString() {
return "Condition \"" + this.message + "\"";
}
}