2026-07-25 08:55:10 +00:00
1 changed files with 30 additions and 1 deletions
@@ -1 +1,30 @@
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+package com.example.util;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class SubtractFunctionTest {
+
+    private final SubtractFunction subtractFunction = new SubtractFunction();
+
+    @Test
+    void subtractsMultipleValues() {
+        assertEquals(1.0, subtractFunction.calc(6.0, 2.0, 3.0));
+    }
+
+    @Test
+    void returnsSingleValue() {
+        assertEquals(5.0, subtractFunction.calc(5.0));
+    }
+
+    @Test
+    void returnsZeroForNoInput() {
+        assertEquals(0.0, subtractFunction.calc());
+    }
+
+    @Test
+    void subtractsNegativeValues() {
+        assertEquals(3.0, subtractFunction.calc(1.0, -2.0));
+    }
+}