[T] Test sugar functions

Author: hykilpikonna

src/test/java/org/hydev/mcpm/utils/SugarTest.java

@@ -0,0 +1,51 @@
+package org.hydev.mcpm.utils;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.Arrays;
+
+/**
+ * TODO: Write a description for this class!
+ *
+ * @author Azalea (https://github.com/hykilpikonna)
+ * @since 2022-10-30
+ */
+class SugarTest
+{
+    @Test
+    void sub()
+    {
+        var a = new Integer[] {1, 2, 3, 4, 5};
+        assert Arrays.equals(Sugar.sub(a, 0, 5), a);
+        assert Arrays.equals(Sugar.sub(a, 0, 4), new Integer[] {1, 2, 3, 4});
+        assert Arrays.equals(Sugar.sub(a, 1, 5), new Integer[] {2, 3, 4, 5});
+        assert Arrays.equals(Sugar.sub(a, 1, 4), new Integer[] {2, 3, 4});
+        assert Sugar.sub(a, 5, 0).length == 0;
+
+        // Negatives
+        assert Arrays.equals(Sugar.sub(a, -2, 5), new Integer[] {4, 5});
+        assert Arrays.equals(Sugar.sub(a, -2, -1), new Integer[] {4});
+        assert Arrays.equals(Sugar.sub(a, 0, -1), new Integer[] {1, 2, 3, 4});
+    }
+
+    @Test
+    void subFrom()
+    {
+        var a = new Integer[] {1, 2, 3, 4, 5};
+        assert Arrays.equals(Sugar.subFrom(a, 0), a);
+        assert Arrays.equals(Sugar.subFrom(a, 1), new Integer[] {2, 3, 4, 5});
+        assert Arrays.equals(Sugar.subFrom(a, -2), new Integer[] {4, 5});
+        assert Sugar.subFrom(a, 5).length == 0;
+        assert Sugar.subFrom(a, 999).length == 0;
+    }
+
+    @Test
+    void subTo()
+    {
+        var a = new Integer[] {1, 2, 3, 4, 5};
+        assert Arrays.equals(Sugar.subTo(a, 5), a);
+        assert Arrays.equals(Sugar.subTo(a, 4), new Integer[] {1, 2, 3, 4});
+        assert Arrays.equals(Sugar.subTo(a, -2), new Integer[] {1, 2, 3});
+        assert Sugar.subTo(a, -99).length == 0;
+    }
+}