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Forked from gatling-maven-plugin 3.1.0, this version has test events integration.

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/**
 * Copyright 2011-2017 GatlingCorp (http://gatling.io)
 *
 * 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 io.gatling.mojo;

import org.w3c.dom.Node;
import org.xml.sax.InputSource;

import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathFactory;
import java.io.File;
import java.io.FileInputStream;

import static java.lang.Integer.parseInt;

class AssertionsSummary {
    private final int errors;
    private final int failures;

    AssertionsSummary(int errors, int failures) {
        this.errors = errors;
        this.failures = failures;
    }

    static AssertionsSummary fromAssertionsFile(File assertionsFile) throws Exception {
        XPathFactory xpathFactory = XPathFactory.newInstance();
        XPath xpath = xpathFactory.newXPath();

        try (FileInputStream is = new FileInputStream(assertionsFile)) {
            Node testsuite = (Node) xpath.evaluate("/testsuite", new InputSource(is), XPathConstants.NODE);
            String errors = xpath.evaluate("@errors", testsuite);
            String failures = xpath.evaluate("@failures", testsuite);
            return new AssertionsSummary(parseInt(errors), parseInt(failures));
        }
    }

    int getErrors() {
        return errors;
    }

    int getFailures() {
        return failures;
    }

    boolean hasFailures() {
        return errors + failures > 0;
    }
}