UsingVarargsTest.java

/*
 * Copyright (c) 2007 Mockito contributors
 * This program is made available under the terms of the MIT License.
 */

package org.mockitousage.basicapi;

import org.junit.Test;
import org.mockito.Mock;
import org.mockito.Mockito;
import org.mockito.exceptions.verification.NoInteractionsWanted;
import org.mockito.exceptions.verification.junit.ArgumentsAreDifferent;
import org.mockitoutil.TestBase;

import java.util.ArrayList;

import static junit.framework.TestCase.assertEquals;
import static junit.framework.TestCase.fail;
import static org.mockito.Mockito.*;

public class UsingVarargsTest extends TestBase {

    private interface IVarArgs {
        void withStringVarargs(int value, String... s);
        String withStringVarargsReturningString(int value, String... s);
        void withObjectVarargs(int value, Object... o);
        boolean withBooleanVarargs(int value, boolean... b);
        int foo(Object ... objects);
    }

    @Mock IVarArgs mock;

    @Test
    public void shouldStubStringVarargs() {
        when(mock.withStringVarargsReturningString(1)).thenReturn("1");
        when(mock.withStringVarargsReturningString(2, "1", "2", "3")).thenReturn("2");

        RuntimeException expected = new RuntimeException();
        doThrow(expected).when(mock).withStringVarargs(3, "1", "2", "3", "4");

        assertEquals("1", mock.withStringVarargsReturningString(1));
        assertEquals(null, mock.withStringVarargsReturningString(2));

        assertEquals("2", mock.withStringVarargsReturningString(2, "1", "2", "3"));
        assertEquals(null, mock.withStringVarargsReturningString(2, "1", "2"));
        assertEquals(null, mock.withStringVarargsReturningString(2, "1", "2", "3", "4"));
        assertEquals(null, mock.withStringVarargsReturningString(2, "1", "2", "9999"));

        mock.withStringVarargs(3, "1", "2", "3", "9999");
        mock.withStringVarargs(9999, "1", "2", "3", "4");

        try {
            mock.withStringVarargs(3, "1", "2", "3", "4");
            fail();
        } catch (Exception e) {
            assertEquals(expected, e);
        }
    }

    @Test
    public void shouldStubBooleanVarargs() {
        when(mock.withBooleanVarargs(1)).thenReturn(true);
        when(mock.withBooleanVarargs(1, true, false)).thenReturn(true);

        assertEquals(true, mock.withBooleanVarargs(1));
        assertEquals(false, mock.withBooleanVarargs(9999));

        assertEquals(true, mock.withBooleanVarargs(1, true, false));
        assertEquals(false, mock.withBooleanVarargs(1, true, false, true));
        assertEquals(false, mock.withBooleanVarargs(2, true, false));
        assertEquals(false, mock.withBooleanVarargs(1, true));
        assertEquals(false, mock.withBooleanVarargs(1, false, false));
    }

    @Test
    public void shouldVerifyStringVarargs() {
        mock.withStringVarargs(1);
        mock.withStringVarargs(2, "1", "2", "3");
        mock.withStringVarargs(3, "1", "2", "3", "4");

        verify(mock).withStringVarargs(1);
        verify(mock).withStringVarargs(2, "1", "2", "3");
        try {
            verify(mock).withStringVarargs(2, "1", "2", "79", "4");
            fail();
        } catch (ArgumentsAreDifferent e) {}
    }

    @Test
    public void shouldVerifyObjectVarargs() {
        mock.withObjectVarargs(1);
        mock.withObjectVarargs(2, "1", new ArrayList<Object>(), new Integer(1));
        mock.withObjectVarargs(3, new Integer(1));

        verify(mock).withObjectVarargs(1);
        verify(mock).withObjectVarargs(2, "1", new ArrayList<Object>(), new Integer(1));
        try {
            verifyNoMoreInteractions(mock);
            fail();
        } catch (NoInteractionsWanted e) {}
    }

    @Test
    public void shouldVerifyBooleanVarargs() {
        mock.withBooleanVarargs(1);
        mock.withBooleanVarargs(2, true, false, true);
        mock.withBooleanVarargs(3, true, true, true);

        verify(mock).withBooleanVarargs(1);
        verify(mock).withBooleanVarargs(2, true, false, true);
        try {
            verify(mock).withBooleanVarargs(3, true, true, true, true);
            fail();
        } catch (ArgumentsAreDifferent e) {}
    }

    @Test
    public void shouldVerifyWithAnyObject() {
        Foo foo = Mockito.mock(Foo.class);
        foo.varArgs("");
        Mockito.verify(foo).varArgs((String[]) Mockito.anyObject());
        Mockito.verify(foo).varArgs((String) Mockito.anyObject());
    }

    @Test
    public void shouldVerifyWithNullVarArgArray() {
        Foo foo = Mockito.mock(Foo.class);
        foo.varArgs((String[]) null);
        Mockito.verify(foo).varArgs((String[]) Mockito.anyObject());
        Mockito.verify(foo).varArgs((String[]) null);
    }

    public class Foo {
        public void varArgs(String... args) {}
    }

    interface MixedVarargs {
        String doSomething(String one, String... varargs);
        String doSomething(String one, String two, String... varargs);
    }

    @SuppressWarnings("all")
    @Test
    //See bug #31
    public void shouldStubCorrectlyWhenMixedVarargsUsed() {
        MixedVarargs mixedVarargs = mock(MixedVarargs.class);
        when(mixedVarargs.doSomething("hello", (String[])null)).thenReturn("hello");
        when(mixedVarargs.doSomething("goodbye", (String[])null)).thenReturn("goodbye");

        String result = mixedVarargs.doSomething("hello",(String[]) null);
        assertEquals("hello", result);

        verify(mixedVarargs).doSomething("hello", (String[])null);
    }

    @SuppressWarnings("all")
    @Test
    public void shouldStubCorrectlyWhenDoubleStringAndMixedVarargsUsed() {
        MixedVarargs mixedVarargs = mock(MixedVarargs.class);
        when(mixedVarargs.doSomething("one", "two", (String[])null)).thenReturn("hello");
        when(mixedVarargs.doSomething("1", "2", (String[])null)).thenReturn("goodbye");

        String result = mixedVarargs.doSomething("one", "two", (String[])null);
        assertEquals("hello", result);
    }

    @Test
    //See bug #157
    public void shouldMatchEasilyEmptyVararg() throws Exception {
        //when
        when(mock.foo(anyVararg())).thenReturn(-1);

        //then
        assertEquals(-1, mock.foo());
    }
}