1 package org.hamcrest.collection; 2 3 import org.hamcrest.AbstractMatcherTest; 4 import org.hamcrest.Matcher; 5 6 import java.util.HashMap; 7 import java.util.Map; 8 import java.util.TreeMap; 9 10 import static org.hamcrest.MatcherAssert.assertThat; 11 import static org.hamcrest.collection.IsMapContaining.hasKey; 12 13 public class IsMapContainingKeyTest extends AbstractMatcherTest { 14 15 @Override 16 protected Matcher<?> createMatcher() { 17 return hasKey("foo"); 18 } 19 20 public void testMatchesSingletonMapContainingKey() { 21 Map<String,Integer> map = new HashMap<String, Integer>(); 22 map.put("a", 1); 23 24 assertMatches("Matches single key", hasKey("a"), map); 25 } 26 27 public void testMatchesMapContainingKey() { 28 Map<String,Integer> map = new HashMap<String, Integer>(); 29 map.put("a", 1); 30 map.put("b", 2); 31 map.put("c", 3); 32 33 assertMatches("Matches a", hasKey("a"), map); 34 assertMatches("Matches c", hasKey("c"), map); 35 } 36 37 38 // No longer compiles 39 // public void testMatchesMapContainingKeyWithNoGenerics() { 40 // Map map = new HashMap(); 41 // map.put("a", 1); 42 // map.put("b", 2); 43 // map.put("c", 3); 44 // 45 // assertMatches("Matches a", hasKey("a"), map); 46 // assertMatches("Matches c", hasKey("c"), map); 47 // } 48 49 public void testMatchesMapContainingKeyWithIntegerKeys() throws Exception { 50 Map<Integer, String> map = new HashMap<Integer, String>(); 51 map.put(1, "A"); 52 map.put(2, "B"); 53 54 assertThat(map, hasKey(1)); 55 } 56 57 public void testMatchesMapContainingKeyWithNumberKeys() throws Exception { 58 Map<Number, String> map = new HashMap<Number, String>(); 59 map.put(1, "A"); 60 map.put(2, "B"); 61 62 assertThat(map, hasKey((Number)1)); 63 64 // TODO: work out the correct sprinkling of wildcards to get this to work! 65 // assertThat(map, hasKey(1)); 66 } 67 68 public void testHasReadableDescription() { 69 assertDescription("map containing [\"a\"->ANYTHING]", hasKey("a")); 70 } 71 72 public void testDoesNotMatchEmptyMap() { 73 assertMismatchDescription("map was []", hasKey("Foo"), new HashMap<String,Integer>()); 74 } 75 76 public void testDoesNotMatchMapMissingKey() { 77 Map<String,Integer> map = new TreeMap<String, Integer>(); 78 map.put("a", 1); 79 map.put("b", 2); 80 map.put("c", 3); 81 82 assertMismatchDescription("map was [<a=1>, <b=2>, <c=3>]", hasKey("d"), map); 83 } 84 } 85
