ThrowableSupplierTest.java

package com.annimon.stream.function;

import java.io.IOException;
import org.junit.Test;
import static org.junit.Assert.*;

/**
 * Tests {@code ThrowableSupplier}.
 * 
 * @see com.annimon.stream.function.ThrowableSupplier
 */
public class ThrowableSupplierTest {
    
    @Test
    public void testGetWithIOException() {
        assertEquals("fantastic", (new ThrowableSupplier<String, IOException>() {

            @Override
            public String get() {
                return "fantastic";
            }
        }).get());
    }
    
    @Test
    public void testGetDoubleWithRuntimeException() {
        ThrowableSupplier<Double, RuntimeException> supplier = new ThrowableSupplier<Double, RuntimeException>() {

            @Override
            public Double get() {
                return Double.parseDouble("5");
            }
        };
        assertEquals(5, supplier.get(), 0.1);
    }
    
    @Test(expected = NumberFormatException.class)
    public void testGetDoubleWithRuntimeExceptionAndWrongValue() {
        ThrowableSupplier<Double, RuntimeException> supplier = new ThrowableSupplier<Double, RuntimeException>() {

            @Override
            public Double get() {
                return Double.parseDouble("abc");
            }
        };
        supplier.get();
    }
}