com.github.tomakehurst.wiremock.verification.diff.JUnitStyleDiffRenderer Maven / Gradle / Ivy

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A web service test double for all occasions

There is a newer version: 3.0.1

package com.github.tomakehurst.wiremock.verification.diff;

import com.google.common.base.Function;
import com.google.common.base.Joiner;

import java.util.List;

import static com.google.common.collect.FluentIterable.from;

public class JUnitStyleDiffRenderer {

    public String render(Diff diff) {
        if (diff.hasCustomMatcher()) {
            return "(Request pattern had a custom matcher so no diff can be shown)";
        }

        List> lines = diff.getLines();

        String expected = Joiner.on("\n")
            .join(from(lines).transform(EXPECTED));
        String actual = Joiner.on("\n")
            .join(from(lines).transform(ACTUAL));

        return lines.isEmpty() ? "" : junitStyleDiffMessage(expected, actual);
    }

    public static String junitStyleDiffMessage(Object expected, Object actual) {
        return String.format(" expected:<\n%s> but was:<\n%s>", expected, actual);
    }

    private static Function, Object> EXPECTED = new Function, Object>() {
        @Override
        public Object apply(DiffLine line) {
            return line.isForNonMatch() ?
                line.getPrintedPatternValue() :
                line.getActual();
        }
    };

    private static Function, Object> ACTUAL = new Function, Object>() {
        @Override
        public Object apply(DiffLine input) {
            return input.getActual();
        }
    };
}