TestingHelperMergeTest.java

package com.github.davidmoten.rx.testing;

import static java.util.Arrays.asList;

import java.util.concurrent.TimeUnit;

import junit.framework.TestCase;
import junit.framework.TestSuite;
import rx.Observable;
import rx.functions.Func1;
import rx.schedulers.Schedulers;

public class TestingHelperMergeTest extends TestCase {

    private static final Observable<Integer> MERGE_WITH = Observable.from(asList(7, 8, 9));

    public static TestSuite suite() {
        return TestingHelper.function(merge).waitForUnsubscribe(100, TimeUnit.MILLISECONDS)
                .waitForTerminalEvent(10, TimeUnit.SECONDS)
                .waitForMoreTerminalEvents(100, TimeUnit.MILLISECONDS)
                // test empty
                .name("testEmptyWithOtherReturnsOther").fromEmpty().expect(7, 8, 9)
                // test error
                .name("testMergeErrorReturnsError").fromError().expectError()
                // test error after items
                .name("testMergeErrorAfter2ReturnsError").fromErrorAfter(1, 2).expectError()
                // test non-empty count
                .name("testTwoWithOtherReturnsTwoAndOtherInAnyOrder").from(1, 2)
                .expectAnyOrder(1, 7, 8, 9, 2)
                // test single input
                .name("testOneWithOtherReturnsOneAndOtherInAnyOrder").from(1)
                .expectAnyOrder(7, 1, 8, 9)
                // unsub before completion
                .name("testTwoWithOtherUnsubscribedAfterOneReturnsOneItemOnly").from(1, 2)
                .unsubscribeAfter(1).expectSize(1)
                // get test suites
                .testSuite(TestingHelperMergeTest.class);
    }

    public void testDummy() {
        // just here to fool eclipse
    }

    private static final Func1<Observable<Integer>, Observable<Integer>> merge = new Func1<Observable<Integer>, Observable<Integer>>() {
        @Override
        public Observable<Integer> call(Observable<Integer> o) {
            return o.mergeWith(MERGE_WITH.subscribeOn(Schedulers.computation()))
                    .subscribeOn(Schedulers.computation());
        }
    };

}