gistfile1.java

package com.vlc.common.test.util;

import au.net.netstorm.boost.nursery.reflect.checker.AssertThrows;
import au.net.netstorm.boost.nursery.reflect.checker.DefaultAssertThrows;

public final class ExceptionTestChecker {
    private static final AssertThrows ASSERT_THROWS = new DefaultAssertThrows();

    private ExceptionTestChecker() {
        throw new UnsupportedOperationException();
    }

    public static <T extends Throwable> Throwable expectException(final Class<T> expectedException, final String message, final Runnable block) {
        return ASSERT_THROWS.assertThrows(expectedException, message, block);
    }

    public static <T extends Throwable> Throwable expectException(final Class<T> expectedException, final Runnable block) {
        return ASSERT_THROWS.assertThrows(expectedException, block);
    }

    public static void expectMessageContains(final Throwable t, final String fragment) {
        ASSERT_THROWS.assertMessageContains(t, fragment);
    }
}

gistfile2.java

    @Specification
    public void shouldThrowOnInvalidLines() {
        expectException(VlcRuntimeException.class, "Invalid dimension definition, expected 3 tokens: 200-12", new Runnable() {
            public void run() {
                dimensionCreator.apply(invalidLine1);
            }
        });
        expectException(VlcRuntimeException.class, "Invalid dimension definition, types incorrect: 200-12-A", new Runnable() {
            public void run() {
                dimensionCreator.apply(invalidLine2);
            }
        });
    }