#18: Ignore order for Sets

CHANGELOG.md

@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [0.9.0] - unreleased
 
+## [0.8.2] - 2024-11-13
+
+* [#18](https://github.com/itsallcode/hamcrest-auto-matcher/issues/18): Ignore order for Sets
+
 ## [0.8.1] - 2024-09-12
 
 * [#17](https://github.com/itsallcode/hamcrest-auto-matcher/pull/17): Allow using `null` as expected value

README.md

@@ -34,7 +34,7 @@ repositories {
 }
 
 dependencies {
-    testImplementation 'org.itsallcode:hamcrest-auto-matcher:0.8.1'
+    testImplementation 'org.itsallcode:hamcrest-auto-matcher:0.8.2'
 }
 ```
 
@@ -43,7 +43,7 @@ dependencies {
 <dependency>
     <groupId>org.itsallcode</groupId>
     <artifactId>hamcrest-auto-matcher</artifactId>
-    <version>0.8.1</version>
+    <version>0.8.2</version>
     <scope>test</scope>
 </dependency>
 ```

build.gradle

@@ -9,7 +9,7 @@ plugins {
 }
 
 group 'org.itsallcode'
-version = '0.8.1'
+version = '0.8.2'
 
 dependencies {
     api 'org.hamcrest:hamcrest:3.0'

src/main/java/org/itsallcode/matcher/auto/AutoConfigBuilder.java

@@ -159,6 +159,11 @@ private static <T> Matcher<T> createIterableContainsMatcher(final T expected) {
         final Object[] elements = StreamSupport.stream(expectedIterable //
                 .spliterator(), false) //
                 .toArray();
+        if (expected instanceof Set) {
+            @SuppressWarnings("unchecked")
+            final Matcher<T> matcher = (Matcher<T>) AutoMatcher.containsInAnyOrder(elements);
+            return matcher;
+        }
         @SuppressWarnings("unchecked")
         final Matcher<T> matcher = (Matcher<T>) AutoMatcher.contains(elements);
         return matcher;

src/test/java/org/itsallcode/matcher/auto/AutoMatcherListTest.java

@@ -44,7 +44,7 @@ void testEmptyListAndNewLinkedList() {
     }
 
     @Test
-    void testEmptyListAndAsListAreEqaul() {
+    void testEmptyListAndAsListAreEqual() {
         assertValuesMatch(emptyList(), asList());
     }
 

src/test/java/org/itsallcode/matcher/auto/AutoMatcherSetTest.java

@@ -0,0 +1,53 @@
+package org.itsallcode.matcher.auto;
+
+import static java.util.Collections.emptySet;
+import static org.itsallcode.matcher.auto.TestUtil.assertValuesDoNotMatch;
+import static org.itsallcode.matcher.auto.TestUtil.assertValuesMatch;
+
+import java.util.*;
+
+import org.itsallcode.matcher.model.DemoAttribute;
+import org.junit.jupiter.api.RepeatedTest;
+import org.junit.jupiter.api.Test;
+
+class AutoMatcherSetTest {
+
+    @Test
+    void testEmptySet() {
+        assertValuesDoNotMatch(emptySet(), Set.of("value2"));
+    }
+
+    @Test
+    void testIncompatibleMemberTypes() {
+        assertValuesDoNotMatch(Set.of("string"), Set.of(1));
+    }
+
+    @Test
+    void testIncompatibleMemberTypesComplexTypes() {
+        assertValuesDoNotMatch(Set.of(new DemoAttribute("attr")), Set.of(1));
+    }
+
+    @Test
+    void testEmptySetAndNewHashSetList() {
+        assertValuesMatch(emptySet(), new HashSet<>());
+    }
+
+    @Test
+    void testEmptySetAndNewTreeSet() {
+        assertValuesMatch(emptySet(), new TreeSet<>());
+    }
+
+    @Test
+    void testEmptySetAndAsSetOfAreEqual() {
+        assertValuesMatch(emptySet(), Set.of());
+    }
+
+    @RepeatedTest(name = "ignores set order repetition {currentRepetition} of {totalRepetitions}", value = 50)
+    void ignoresSetOrder() {
+
+        final Set<String> set = new HashSet<>();
+        set.add("value1");
+        set.add("value2");
+        assertValuesMatch(Set.of("value1", "value2"), set);
+    }
+}