org.hamcrest.core.AllOf Maven / Gradle / Ivy

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With inspiration from other libraries
There is a newer version: 2.12.15
package org.hamcrest.core;

import org.hamcrest.Description;
import org.hamcrest.DiagnosingMatcher;
import org.hamcrest.Factory;
import org.hamcrest.Matcher;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

/**
 * Calculates the logical conjunction of multiple matchers. Evaluation is shortcut, so
 * subsequent matchers are not called if an earlier matcher returns false.
 */
public class AllOf extends DiagnosingMatcher {

    private final Iterable> matchers;

    public AllOf(Iterable> matchers) {
        this.matchers = matchers;
    }

    @Override
    public boolean matches(Object o, Description mismatch) {
        for (Matcher matcher : matchers) {
            if (!matcher.matches(o)) {
                mismatch.appendDescriptionOf(matcher).appendText(" ");
                matcher.describeMismatch(o, mismatch);
              return false;
            }
        }
        return true;
    }

    @Override
    public void describeTo(Description description) {
        description.appendList("(", " " + "and" + " ", ")", matchers);
    }

    /**
     * Creates a matcher that matches if the examined object matches ALL of the specified matchers.
     * 
     * For example:
     * 
assertThat("myValue", allOf(startsWith("my"), containsString("Val")))
     */
    @Factory
    public static  Matcher allOf(Iterable> matchers) {
        return new AllOf(matchers);
    }

    /**
     * Creates a matcher that matches if the examined object matches ALL of the specified matchers.
     * 
     * For example:
     * 
assertThat("myValue", allOf(startsWith("my"), containsString("Val")))
     */
    @Factory
    public static  Matcher allOf(Matcher... matchers) {
        return allOf(Arrays.asList(matchers));
    }

    /**
     * Creates a matcher that matches if the examined object matches ALL of the specified matchers.
     * 
     * For example:
     * 
assertThat("myValue", allOf(startsWith("my"), containsString("Val")))
     */
    @Factory
    public static  Matcher allOf(Matcher first, Matcher second) {
        List> matchers = new ArrayList>(2);
        matchers.add(first);
        matchers.add(second);
        return allOf(matchers);
    }

    /**
     * Creates a matcher that matches if the examined object matches ALL of the specified matchers.
     * 
     * For example:
     * 
assertThat("myValue", allOf(startsWith("my"), containsString("Val")))
     */
    @Factory
    public static  Matcher allOf(Matcher first, Matcher second, Matcher third) {
        List> matchers = new ArrayList>(3);
        matchers.add(first);
        matchers.add(second);
        matchers.add(third);
        return allOf(matchers);
    }

    /**
     * Creates a matcher that matches if the examined object matches ALL of the specified matchers.
     * 
     * For example:
     * 
assertThat("myValue", allOf(startsWith("my"), containsString("Val")))
     */
    @Factory
    public static  Matcher allOf(Matcher first, Matcher second, Matcher third, Matcher fourth) {
        List> matchers = new ArrayList>(4);
        matchers.add(first);
        matchers.add(second);
        matchers.add(third);
        matchers.add(fourth);
        return allOf(matchers);
    }

    /**
     * Creates a matcher that matches if the examined object matches ALL of the specified matchers.
     * 
     * For example:
     * 
assertThat("myValue", allOf(startsWith("my"), containsString("Val")))
     */
    @Factory
    public static  Matcher allOf(Matcher first, Matcher second, Matcher third, Matcher fourth, Matcher fifth) {
        List> matchers = new ArrayList>(5);
        matchers.add(first);
        matchers.add(second);
        matchers.add(third);
        matchers.add(fourth);
        matchers.add(fifth);
        return allOf(matchers);
    }

    /**
     * Creates a matcher that matches if the examined object matches ALL of the specified matchers.
     * 
     * For example:
     * 
assertThat("myValue", allOf(startsWith("my"), containsString("Val")))
     */
    @Factory
    public static  Matcher allOf(Matcher first, Matcher second, Matcher third, Matcher fourth, Matcher fifth, Matcher sixth) {
        List> matchers = new ArrayList>(6);
        matchers.add(first);
        matchers.add(second);
        matchers.add(third);
        matchers.add(fourth);
        matchers.add(fifth);
        matchers.add(sixth);
        return allOf(matchers);
    }
}