I have a class called Calculator with the four basic operations of adding, subtracting, dividing and multiplying
public class Calculator{
public int add(int a, int b) {
return a + b;
}
public int subtract(int a, int b) {
return a - b;
}
public double multiply(double a, double b) {
return a * b;
}
public double divide(double a, double b) {
if (b == 0) {
throw new ArithmeticException("Division by zero.");
}
return a / b;
}
}
I'm using a Maven project and my pom.xml file:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>br.usp.icmc</groupId>
<artifactId>Calculadora</artifactId>
<version>0.0.1</version>
<dependencies>
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-library</artifactId>
<version>1.3</version>
</dependency>
</dependencies>
</project>
I created a test in JUnit as follows:
public void testSumWithAssertThat() {
int expectedValue = 2;
int returnedValue = calculator.add(1, 1);
assertThat(returnedValue, is(expectedValue));
}
I'm getting the following exception:
java.lang.SecurityException: class "org.hamcrest.Matchers"'s signer information does not match signer information of other classes in the same package
Why are you throwing an exception? What's going wrong with this simple code?
