package org.hamcrest.collection;

import org.hamcrest.AbstractMatcherTest;
import org.hamcrest.FeatureMatcher;
import org.hamcrest.Matcher;

import java.util.ArrayList;
import java.util.List;

import static java.util.Arrays.asList;
import static java.util.Collections.singletonList;
import static org.hamcrest.collection.IsIterableContainingInOrder.contains;
import static org.hamcrest.core.IsEqual.equalTo;

@SuppressWarnings("unchecked")
public class IsIterableContainingInOrderTest extends AbstractMatcherTest {
    
// temporary hack until the Java type system works
    
private final Matcher<Iterable<? extends WithValue>> contains123 = contains(value(1), value(2), value(3));

    
@Override
    
protected Matcher<?> createMatcher() {
        
return contains(1, 2);
    
}

    
public void testMatchingSingleItemIterable() throws Exception {
        
assertMatches("Single item iterable", contains(1), singletonList(1));
    
}

    
public void testMatchingMultipleItemIterable() throws Exception {
        
assertMatches("Multiple item iterable", contains(1, 2, 3), asList(1, 2, 3));
    
}

    
public void testDoesNotMatchWithMoreElementsThanExpected() throws Exception {
        
assertMismatchDescription("not matched: <4>", contains(1, 2, 3), asList(1, 2, 3, 4));
    
}

    
public void testDoesNotMatchWithFewerElementsThanExpected() throws Exception {
        
assertMismatchDescription("no item was value with <3>", contains123, asList(make(1), make(2)));
    
}

    
public void testDoesNotMatchIfSingleItemMismatches() throws Exception {
        
assertMismatchDescription("item 0: value was <3>", contains(value(4)), singletonList(make(3)));
    
}

    
public void testDoesNotMatchIfOneOfMultipleItemsMismatch() throws Exception {
        
assertMismatchDescription("item 2: value was <4>", contains123, asList(make(1), make(2), make(4)));
    
}

    
public void testDoesNotMatchEmptyIterable() throws Exception {
        
assertMismatchDescription("no item was value with <4>", contains(value(4)), new ArrayList<WithValue>());
    
}

    
public void testHasAReadableDescription() {
        
assertDescription("iterable containing [<1>, <2>]", contains(1, 2));
    
}
    

    
public void testCanHandleNullMatchers() {
    	
assertMatches(contains(null, null), asList(null, null));
    
}

    
public static class WithValue {
      
private final int value;
      
public WithValue(int value) { this.value = value; }
      
public int getValue() { return value; }
      
@Override public String toString() { return "WithValue " + value; }
    
}

    
public static WithValue make(int value) {
      
return new WithValue(value);
    
}

    
public static Matcher<WithValue> value(int value) {
      
return new FeatureMatcher<WithValue, Integer>(equalTo(value), "value with", "value") {
        
@Override protected Integer featureValueOf(WithValue actual) { return actual.getValue(); }
      
};
    
}
}