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Groovy/Spock
for Android app testing
Masayuki IZUMI - @izumin5210
potatotips #22
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> Masayuki IZUMI a.k.a. @izumin5210
> Rekimoto Lab. at the University of Tokyo
> Wantedly, Inc.
> Rubyist / Androider / {Java,Type}Scripter
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Ruby
JavaScript
Android
Design
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Parameterized test
with JUnit
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public class GreeterTest {
@Test
public void sayHello() throws Exception {
Greeter greeter = new Greeter();
assertEquals("Hello", greeter.say());
}
}
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public class GreeterTest {
private Greeter greeter;
@Before
public void setUp() throws Exception {
greeter = new Greeter();
}
@Test
public void sayMorning() throws Exception {
assertEquals("Good morning", greeter.say("morning"));
}
@Test
public void sayHello() throws Exception {
assertEquals("Hello", greeter.say("afternoon"));
}
}
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public class GreeterTest {
private Greeter greeter;
@Before
public void setUp() throws Exception {
greeter = new Greeter();
}
@Test
public void sayMorning() throws Exception {
assertEquals("Good morning", greeter.say("morning"));
}
@Test
public void sayHello() throws Exception {
assertEquals("Hello", greeter.say("afternoon"));
}
@Test
public void sayNight() throws Exception {
assertEquals("Good night", greeter.say("night"));
}
}
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public class GreeterTest {
@Test
public void say() throws Exception {
Greeter greeter = new Greeter();
String[][] pairs = {
{"morning", "Good morning"},
{"afternoon", "Hello"},
{"night", "Good night"}
};
for (String[] pair : pairs) {
assertEquals(pair[1], greeter.say(pair[0]));
}
}
}
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@RunWith(Theories.class)
public class GreeterTest {
public static class Fixture { /* ... */ }
@DataPoints
public static Fixture[] getParameters() {
return new Fixture[] {
new Fixture("morning", "Good morning"), /* ... */
};
}
@Theory
public void say(Fixture fixture) throws Exception {
Greeter greeter = new Greeter();
assertEquals(fixture.getExpected(), greeter.say(fixture.getArg()));
}
}
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Parameterized test with JUnit
Too complecated and verbose
Stop execution when assertion failed
- run -> fail -> fix -> run -> fail -> fix -> run -> fail ...
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Spock
“The Enterprise-ready testing and specification framework.”
https://github.com/spockframework/spock
https://www.flickr.com/photos/124561666@N02/14218023847
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Spock
Testing framework written in Groovy
Inspired from JUnit, RSpec, Mockito, ...
Very fluent specification DSL (like RSpec?)
Descriptive assertion message (Power Assert!!!)
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Installation
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:1.2.3'
classpath 'org.codehaus.groovy:gradle-groovy-android-plugin:0.3.6'
}
}
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Installation
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:1.2.3'
classpath 'org.codehaus.groovy:gradle-groovy-android-plugin:0.3.6'
}
}
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Installation
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:1.2.3'
classpath 'org.codehaus.groovy:gradle-groovy-android-plugin:0.3.6'
}
}
gradle-groovy-android-plugin 0.3.6
has not supported
android gradle plugin 1.3 higher...
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Installation
dependencies {
// ...
testCompile "org.spockframework:spock-core:1.0-groovy-2.4"
}
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GreeterSpec with Spock
class GreeterSpec extends Specification {
def "#say()"() {
expect:
expected == new Greeter().say(period)
where:
period | expected
"morning" | "Good morning"
"afternoon" | "Hello"
"night" | "Good night"
}
}
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GreeterSpec with Spock
class GreeterSpec extends Specification {
def "#say()"() {
expect:
expected == new Greeter().say(period)
where:
period | expected
"morning" | "Good morning"
"afternoon" | "Hello"
"night" | "Good night"
}
}
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GreeterSpec with Spock
class GreeterSpec extends Specification {
def "#say()"() {
expect:
expected == new Greeter().say(period)
where:
period | expected
"morning" | "Good morning"
"afternoon" | "Hello"
"night" | "Good night"
}
}
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Assertion message
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Assertion message
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JUnit
v.s.
Spock
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https://speakerdeck.com/jnchito/number-kanrk06
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Groovy/Spock
for Android app testing
Masayuki IZUMI - @izumin5210
potatotips #22