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

Go to download

Show more of this group Show more artifacts with this name
Show all versions of hamcrest Show documentation

Core API and libraries of hamcrest matcher framework.

There is a newer version: 3.0

package org.hamcrest.core;

import org.hamcrest.Matcher;

/**
 * Tests if the argument is a string that starts with a specific substring.
 */
public class StringStartsWith extends SubstringMatcher {
    public StringStartsWith(boolean ignoringCase, String substring) { super("starting with", ignoringCase, substring); }

    @Override
    protected boolean evalSubstringOf(String s) { return converted(s).startsWith(converted(substring)); }

    /**
     * 
     * Creates a matcher that matches if the examined {@link String} starts with the specified
     * {@link String}.
     * 
     * For example:
     * assertThat("myStringOfNote", startsWith("my"))
     * 
     * @param prefix
     *      the substring that the returned matcher will expect at the start of any examined string
     */
    public static Matcher startsWith(String prefix) { return new StringStartsWith(false, prefix); }

    /**
     * 
     * Creates a matcher that matches if the examined {@link String} starts with the specified
     * {@link String}, ignoring case
     * 
     * For example:
     * assertThat("myStringOfNote", startsWithIgnoringCase("My"))
     *
     * @param prefix
     *      the substring that the returned matcher will expect at the start of any examined string
     */
    public static Matcher startsWithIgnoringCase(String prefix) { return new StringStartsWith(true, prefix); }

}