Use deepEquals for DefaultValues

Needed for the array properties

Author: FlorentinD

core/src/test/java/org/neo4j/gds/api/DefaultValueTest.java

@@ -180,6 +180,24 @@ void createUserDefinedValueTypes(Object valueToSet, Function<DefaultValue, ?> fn
         assertThat(fn.apply(defaultValue)).isEqualTo(expectedValue);
     }
 
+    public static Stream<Arguments> defaultValuesEqual() {
+        return Stream.of(
+            Arguments.of(DefaultValue.of(42), DefaultValue.of(42), true),
+            Arguments.of(DefaultValue.of(43), DefaultValue.of(42), false),
+            Arguments.of(DefaultValue.of(new double[] {1.0, 2.0, 3.0}), DefaultValue.of(new double[] {1.0, 2.0, 3.0}), true),
+            Arguments.of(DefaultValue.of(new long[] {1, 2, 3}), DefaultValue.of(new long[] {1, 2, 3}), true),
+            Arguments.of(DefaultValue.of(new long[] {1, 2, 3}), DefaultValue.of(new double[] {1, 2, 3}), false)
+        );
+    }
+
+    @ParameterizedTest
+    @MethodSource("defaultValuesEqual")
+    void shouldEqualArrayDefaultValues(DefaultValue v1, DefaultValue v2, boolean expected) {
+        var actual = v1.equals(v2);
+
+        assertThat(actual).isEqualTo(expected);
+    }
+
     private static Stream<Arguments> values() {
         return Stream.of(
             Arguments.of(42, (Function<DefaultValue, ?>) DefaultValue::longValue, 42L),

graph-projection-api/src/main/java/org/neo4j/gds/api/DefaultValue.java

@@ -251,7 +251,8 @@ public boolean equals(Object o) {
         if (this == o) return true;
         if (o == null || getClass() != o.getClass()) return false;
         DefaultValue that = (DefaultValue) o;
-        return Objects.equals(defaultValue, that.defaultValue);
+
+        return Objects.deepEquals(defaultValue, that.defaultValue);
     }
 
     @Override

graph-projection-api/src/test/java/org/neo4j/gds/NodeProjectionsTest.java

@@ -239,6 +239,19 @@ void shouldSupportCaseInsensitiveConfigKeys() {
         assertThat(actual.labelProjection(), equalTo("A"));
     }
 
+    @Test
+    void shouldSupportArrayDefaultValues() {
+        NodeProjections.fromObject(Map.of(
+                "MY_LABEL", Map.of(
+                    "properties", Map.of("prop1", Map.of("defaultValue", new long[]{1, 2, 3}))
+                ),
+                "OTHER_LABEL", Map.of(
+                    "properties", Map.of("prop1", Map.of("defaultValue", new long[]{1, 2, 3}))
+                )
+            )
+        );
+    }
+
     static Stream<Arguments> syntacticSugarsSimple() {
         return Stream.of(
             Arguments.of(