com.jeroensteenbeeke.andalite.core.ResultMatchers.java Source code

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Here is the source code for com.jeroensteenbeeke.andalite.core.ResultMatchers.java

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/**
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.jeroensteenbeeke.andalite.core;

import com.google.common.collect.Lists;
import com.jeroensteenbeeke.lux.Result;
import org.hamcrest.Description;
import org.hamcrest.Matcher;
import org.hamcrest.TypeSafeDiagnosingMatcher;

import javax.annotation.Nonnull;
import java.util.List;

public final class ResultMatchers {

    private ResultMatchers() {

    }

    public static Matcher<Result<?, ?>> isOk() {
        return new TypeSafeDiagnosingMatcher<Result<?, ?>>() {
            @Override
            public void describeTo(Description description) {
                description.appendText("is ok");
            }

            @Override
            protected boolean matchesSafely(Result<?, ?> item, Description mismatchDescription) {
                boolean matches = item.isOk();

                if (!matches) {
                    mismatchDescription.appendText("is not ok: ");
                    mismatchDescription.appendText(item.getMessage());

                }

                return matches;
            }
        };
    }

    public static Matcher<Result<?, ?>> hasError(@Nonnull final String message) {
        return new TypeSafeDiagnosingMatcher<Result<?, ?>>() {
            @Override
            public void describeTo(Description description) {
                description.appendText("is not ok, with error ").appendText(message);
            }

            @Override
            protected boolean matchesSafely(Result<?, ?> item, Description mismatchDescription) {
                boolean ok = item.isOk();
                boolean messageEqual = message.equals(item.getMessage());
                boolean matches = !ok && messageEqual;

                if (!matches) {
                    List<String> messages = Lists.newLinkedList();

                    if (ok) {
                        messages.add("is ok");
                    }
                    if (!messageEqual) {
                        if (item.getMessage() != null) {
                            messages.add(String.format("error is %s", item.getMessage()));
                        } else {
                            messages.add("no error");
                        }
                    }

                    mismatchDescription.appendValueList("", ", ", "", messages);
                }

                return matches;

            }
        };
    }
}