/*
 * Copyright 2012 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
 *
 *    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 geb.waiting

/**
 * A wrapper that is always falsey when evaluated and holds a Throwable that was returned from last closure evaluation in a waitFor() call.
 *
 * @see geb.waiting.WaitingSupport
 */
class UnknownWaitForEvaluationResult {
    /** holds a Throwable that was returned from last closure evaluation in a waitFor() call */
    Throwable thrown

    UnknownWaitForEvaluationResult(Throwable thrown) {
        this.thrown = thrown
    }

    boolean asBoolean() {
        false
    }

    String toString() {
        "Last waitFor evaluation value is unknown because the following exception was thrown from the evaluated closure: $thrown"
    }
}
