Add test coverage on FlagSet

at055612 · at055612 · commit e9f9ac4f8879 · 2025-11-06T18:46:25.000Z
diff --git a/src/main/java/org/lmdbjava/CopyFlagSet.java b/src/main/java/org/lmdbjava/CopyFlagSet.java
@@ -21,7 +21,7 @@
 
 public interface CopyFlagSet extends FlagSet<CopyFlags> {
 
-  static CopyFlagSet EMPTY = CopyFlagSetImpl.EMPTY;
+  CopyFlagSet EMPTY = CopyFlagSetImpl.EMPTY;
 
   static CopyFlagSet empty() {
     return CopyFlagSetImpl.EMPTY;
diff --git a/src/test/java/org/lmdbjava/AbstractFlagSetTest.java b/src/test/java/org/lmdbjava/AbstractFlagSetTest.java
@@ -159,6 +159,39 @@ void testAllFlags() {
     }
   }
 
+  /**
+   * Test as an enum instance rather than a {@link FlagSet}
+   */
+  @Test
+  void testAsFlag() {
+    final T flag = getFirst();
+    assertThat(flag.size())
+        .isEqualTo(1);
+    assertThat(flag.getFlags())
+        .hasSize(1);
+    final T flag2 = flag.getFlags().iterator().next();
+    assertThat(flag2 == flag)
+        .isTrue();
+    assertThat(flag.getMask())
+        .isEqualTo(MaskedFlag.mask(flag));
+    assertThat(flag.isEmpty())
+        .isFalse();
+    assertThat(flag.toString())
+        .isNotNull();
+    assertThat(flag.isSet(flag))
+        .isTrue();
+    assertThat(flag.isSet(flag2))
+        .isTrue();
+    assertThat(flag.isSet(null))
+        .isFalse();
+    final List<T> allFlags = getAllFlags();
+    if (allFlags.size() > 1) {
+      T secondFlag = allFlags.get(1);
+      assertThat(flag.isSet(secondFlag))
+          .isFalse();
+    }
+  }
+
   private T[] toArray(final int cnt) {
     //noinspection unchecked
     return (T[]) Array.newInstance(getFlagType(), cnt);
