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package bjc.utils.funcutils;
import static org.junit.Assert.assertEquals;
import java.util.Iterator;
import java.util.List;
/**
* Utilities for testing.
*
* @author bjculkin
*
*/
public class TestUtils {
/**
* Assert an iterator provides a particular sequence of values.
*
* @param <T> The type of the values.
* @param src The iterator to pull values from.
* @param vals The values to expect from the iterator.
*/
@SafeVarargs
public static <T> void assertIteratorEquals(Iterator<T> src, T... vals) {
for (T val : vals) assertEquals(val, src.next());
}
/**
* Assert an iterator provides a particular sequence of values.
*
* @param <T> The type of the values.
* @param src The iterator to pull values from.
* @param hasMore The expected value of hasNext for the iterator.
* @param vals The values to expect from the iterator.
*/
@SafeVarargs
public static <T> void assertIteratorEquals(boolean hasMore, Iterator<T> src,
T... vals) {
/*
* @NOTE
*
* Even though it's awkward, the boolean has to come first. Otherwise, there are
* cases where the compiler will get confused as to what the right value for T
* is, and be unable to pick an overload.
*
* This is a case where named parameter would be rather useful.
*/
assertIteratorEquals(src, vals);
assertEquals(hasMore, src.hasNext());
}
/**
* Assert that a list has a given set of contents.
*
* @param <T> The type of the values.
* @param src The list of actual elements.
* @param exps The list of expected elements.
*/
@SafeVarargs
public static <T> void assertListEquals(List<T> src, T... exps) {
assertEquals(exps.length, src.size());
int i = 0;
for (T act : src) {
T exp = exps[i++];
assertEquals(exp, act);
}
}
}
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