com.pronoia.hapi.hamcrest.message.MessageContainsPattern Maven / Gradle / Ivy

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/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.pronoia.hapi.hamcrest.message;

import java.util.regex.Pattern;

import ca.uhn.hl7v2.model.Message;

import com.pronoia.hapi.HapiTestUtil;

import org.hamcrest.Description;
import org.hamcrest.TypeSafeDiagnosingMatcher;

import static com.pronoia.hapi.HapiTestUtil.compilePatternEscapingPipesAndCarets;


public class MessageContainsPattern extends TypeSafeDiagnosingMatcher {
    final Pattern expected;

    public MessageContainsPattern(String expected)  {
        this.expected = compilePatternEscapingPipesAndCarets(expected);
    }

    public MessageContainsPattern(Pattern expected)  {
        this.expected = expected;
    }

    @Override
    protected boolean matchesSafely(Message actualMessage, Description mismatchDescription) {
        String actual = HapiTestUtil.encode(actualMessage);

        if (!expected.matcher(actual).find()) {
            String[] segments = HapiTestUtil.convertToArrayOfSegmentStrings(actual);

            mismatchDescription.appendText(segments[0]);

            for (int i = 1; i < segments.length; ++i) {
                mismatchDescription.appendText("\n          ")
                    .appendText(segments[i]);
            }
            return false;
        }

        return true;
    }

    @Override
    public void describeTo(Description description) {
        description.appendText("Message containing Pattern ")
            .appendText(expected.pattern().replaceAll("\r", "\\x0D"));
    }
}