Add tests for decorationIfAbsent

api/src/main/java/net/kyori/adventure/text/Component.java

@@ -2026,7 +2026,7 @@ default boolean hasDecoration(final @NotNull TextDecoration decoration) {
   @Override
   default @NotNull Component decorationIfAbsent(final @NotNull TextDecoration decoration, @NotNull final TextDecoration.State state) {
     requireNonNull(state, "state");
-    //Not delegating this method prevents object creation if decoration is absent
+    //Not delegating this method prevents object creation if decoration is NOT absent
     final TextDecoration.@NotNull State thisState = this.decoration(decoration);
     if (thisState == TextDecoration.State.NOT_SET) {
       return this.style(this.style().decoration(decoration, state));

api/src/test/java/net/kyori/adventure/text/ComponentDecorationTest.java

@@ -0,0 +1,53 @@
+/*
+ * This file is part of adventure, licensed under the MIT License.
+ *
+ * Copyright (c) 2017-2022 KyoriPowered
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package net.kyori.adventure.text;
+
+import com.google.common.collect.ImmutableSet;
+import net.kyori.adventure.text.format.Style;
+import net.kyori.adventure.text.format.TextDecoration;
+import org.junit.jupiter.api.Test;
+
+import static net.kyori.adventure.text.TextAssertions.assertDecorations;
+
+public class ComponentDecorationTest {
+
+  @Test
+  void testDecorationIfAbsent() {
+    final Style s0 = Style.style(TextDecoration.BOLD);
+    final Component c0 = Component.text("tuba time", s0)
+      .decorationIfAbsent(TextDecoration.BOLD, TextDecoration.State.FALSE)
+      .decorationIfAbsent(TextDecoration.ITALIC, TextDecoration.State.FALSE);
+    assertDecorations(c0.style(), ImmutableSet.of(TextDecoration.BOLD), ImmutableSet.of(TextDecoration.ITALIC));
+  }
+
+  @Test
+  void testDecorationIfAbsentWithBuilder() {
+    final Style s0 = Style.style(TextDecoration.BOLD);
+    final Component c0 = Component.text().style(s0).content("tuba time")
+      .decorationIfAbsent(TextDecoration.BOLD, TextDecoration.State.FALSE)
+      .decorationIfAbsent(TextDecoration.ITALIC, TextDecoration.State.FALSE)
+      .build();
+    assertDecorations(c0.style(), ImmutableSet.of(TextDecoration.BOLD), ImmutableSet.of(TextDecoration.ITALIC));
+  }
+}

api/src/test/java/net/kyori/adventure/text/format/StyleTest.java

@@ -154,6 +154,23 @@ void testOf_decorations() {
     assertDecorations(s0, ImmutableSet.of(TextDecoration.BOLD, TextDecoration.ITALIC), ImmutableSet.of());
   }
 
+  @Test
+  void testDecorationIfAbsent() {
+    final Style s0 = Style.style(TextDecoration.BOLD)
+      .decorationIfAbsent(TextDecoration.BOLD, TextDecoration.State.FALSE)
+      .decorationIfAbsent(TextDecoration.ITALIC, TextDecoration.State.FALSE);
+    assertDecorations(s0, ImmutableSet.of(TextDecoration.BOLD), ImmutableSet.of(TextDecoration.ITALIC));
+  }
+
+  @Test
+  void testDecorationIfAbsentWithBuilder() {
+    final Style s0 = Style.style().decoration(TextDecoration.BOLD, TextDecoration.State.TRUE)
+      .decorationIfAbsent(TextDecoration.BOLD, TextDecoration.State.FALSE)
+      .decorationIfAbsent(TextDecoration.ITALIC, TextDecoration.State.FALSE)
+      .build();
+    assertDecorations(s0, ImmutableSet.of(TextDecoration.BOLD), ImmutableSet.of(TextDecoration.ITALIC));
+  }
+
   @Test
   void testOf_colorAndDecorations() {
     final Style s0 = Style.style(NamedTextColor.GREEN, TextDecoration.BOLD, TextDecoration.ITALIC);