mocker

Additional

Language
Java
Version
0.1.2 (May 23, 2016)
Created
May 19, 2016
Updated
May 30, 2016 (Retired)
Owner
Andrew Chen (yongjhih)
Contributor
Andrew Chen (yongjhih)
1
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Source code

mocker

Fluent Mockito Builder

Usage

mock():

ParseUser mockUser = mocker(ParseUser.class).mock();

Infer casting:

// Before: ParseQuery<ParseUser> mockQuery = (ParseQuery<ParseUser>) Mockito.mock(ParseQuery.class);
// After:
ParseQuery<ParseUser> mockQuery = mocker(ParseQuery.class).mock();

when-thenReturn:

ParseUser mockUser = mocker(ParseUser.class)
    .when(user -> user.getObjectId()).thenReturn(user -> "1_" + user.hashCode());
    .mock();

Multiple when-thenReturn:

ParseQuery<ParseUser> mockQuery = mocker(ParseQuery.class)
    .when(query -> query.countInBackground()).thenReturn(query -> Task.forResult(users.size()))
    .when(query -> query.findInBackground()).thenReturn(query -> Task.forResult(users))
    .when(query -> query.setSkip(any(int.class))).thenReturn(query -> null)
    .when(query -> query.setLimit(any(int.class))).thenReturn(query -> null)
    .mock();

Avoid unnecessary variables:

Before:

ParseUser user = mock(ParseUser.class);
ParseUser user2 = mock(ParseUser.class);
ParseUser user3 = mock(ParseUser.class);
List<ParseUser> users = Arrays.asList(user, user2, user3);

ParseQuery<ParseUser> query = (ParseQuery<ParseUser>) mock(ParseQuery.class);

when(query.countInBackground()).thenReturn(Task.forResult(users.size()));
when(query.findInBackground()).thenReturn(Task.forResult(users));
when(query.setSkip(any(int.class))).thenReturn(null);
when(query.setLimit(any(int.class))).thenReturn(null);

when(user.getObjectId()).thenReturn("1_" + user.hashCode());
when(user2.getObjectId()).thenReturn("2_" + user2.hashCode());
when(user3.getObjectId()).thenReturn("3_" + user3.hashCode());

rx.assertions.RxAssertions.assertThat(rx.parse.ParseObservable.all(query)).completes();

After:

List<ParseUser> users = Arrays.asList(
        mocker(ParseUser.class).when(user -> user.getObjectId()).thenReturn(user -> "1_" + user.hashCode()).mock(),
        mocker(ParseUser.class).when(user -> user.getObjectId()).thenReturn(user -> "2_" + user.hashCode()).mock(),
        mocker(ParseUser.class).when(user -> user.getObjectId()).thenReturn(user -> "3_" + user.hashCode()).mock());

rx.assertions.RxAssertions.assertThat(rx.parse.ParseObservable.all(mocker(ParseQuery.class)
            .when(query -> query.countInBackground()).thenReturn(query -> Task.forResult(users.size()))
            .when(query -> query.findInBackground()).thenReturn(query -> Task.forResult(users))
            .when(query -> query.setSkip(any(int.class))).thenReturn(query -> null)
            .when(query -> query.setLimit(any(int.class))).thenReturn(query -> null)
            .mock())
        ).completes();

verify

Shorten expression:

mocker(List.class).never(list -> {}).size();
mocker(List.class).times(list -> list.size(), 1).size();

Normal expression:

mocker(List.class).verify(list -> {}).never().mock().size();
mocker(List.class).verify(list -> list.size()).times(1).mock().size();

Installation

repositories {
    // ...
    maven { url "https://jitpack.io" }
}

dependencies {
    testCompile 'com.github.yongjhih:mocker:-SNAPSHOT'
    //testCompile 'com.github.yongjhih:mocker:0.1.2'
}

Bonus: Reuse mocker

Mocker<List> mocker = mocker(List.class).when(list -> list.size()).thenReturn(list -> 3);
Mocker<List> mocker2 = mocker.when(list -> list.toString()).thenReturn(list -> "hello");

List list = mocker.mock();
List list2 = mocker2.mock();

assertEquals(3, list.size());
assertEquals(3, list2.size());

assertNotEquals("hello", list.toString());
assertEquals("hello", list2.toString());

Bonus: asList

List<List> lists = mocker(List.class).when(list -> list.toString()).thenReturn(list -> "hello").asList(3);
assertEquals(lists.size(), 3);
for (List item : lists) assertEquals(item.toString(), "hello");

LICENSE

Copyright (C) 2016 8tory, Inc

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.