Java Fizzbuzz
July 04, 2018
Gradle setup
For our build.gradle
file:
apply plugin: "java"
apply plugin: "eclipse"
apply plugin: "idea"
repositories {
mavenCentral()
}
dependencies {
testCompile "junit:junit:4.12"
}
test {
testLogging {
exceptionFormat = 'full'
events = ["passed", "failed", "skipped"]
}
}
Setting up the Tests
Create file src/test/java/FizzBuzzTest.java
:
import org.junit.Ignore;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
public class FizzBuzzTest {
@Test
public void testReturnsIntAsString() {
assertEquals("2", new FizzBuzz().run(2));
}
// @Ignore("Remove to run test")
@Test
public void testReturnsFizz() {
assertEquals("Fizz", new FizzBuzz().run(3));
}
@Test
public void testReturnsBuzz() {
assertEquals("Buzz", new FizzBuzz().run(5));
}
@Test
public void testReturnsFizzBuzz() {
assertEquals("FizzBuzz", new FizzBuzz().run(15));
}
}
src/main/java/FizzBuzz.java
For our main Java file running FizzBuzz:
class FizzBuzz {
String run(Integer input) {
if (input % 15 == 0) {
return "FizzBuzz";
} else if (input % 3 == 0) {
return "Fizz";
} else if (input % 5 == 0) {
return "Buzz";
} else {
return Integer.toString(input);
}
}
}
Running tests
Run gradle test
to compile and test our FizzBuzz class.
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A personal blog on all things of interest. Written by Dennis O'Keeffe, Follow me on Twitter