feat: 准备 1.3.0 稳定版本

src/test/java/cn/infstar/essentialsC/compat/jei/RecipeGroupingTest.java

@@ -0,0 +1,23 @@
+package cn.infstar.essentialsC.compat.jei;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class RecipeGroupingTest {
+
+    @Test
+    void groupsValuesInOnePassAndPreservesOrder() {
+        List<String> recipes = List.of("crafting:first", "smelting:second", "crafting:third");
+
+        Map<String, List<String>> grouped = RecipeGrouping.groupBy(
+            recipes, value -> value.substring(0, value.indexOf(':')));
+
+        assertEquals(List.of("crafting", "smelting"), grouped.keySet().stream().toList());
+        assertEquals(List.of("crafting:first", "crafting:third"), grouped.get("crafting"));
+        assertEquals(List.of("smelting:second"), grouped.get("smelting"));
+    }
+}