[bigDecimal-x-int] Multiply a BigDecimal By an Integer in Java (#13320)

core-java-modules/core-java-numbers-5/src/test/java/com/baeldung/bigdecimaltimesint/BigDecimalxIntegerUnitTest.java

@@ -0,0 +1,22 @@
+package com.baeldung.bigdecimaltimesint;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.math.BigDecimal;
+
+import org.junit.jupiter.api.Test;
+
+public class BigDecimalxIntegerUnitTest {
+    private static final BigDecimal BIG = new BigDecimal("42.42");
+    private static final int INT = 10;
+    private static final BigDecimal EXPECTED = new BigDecimal("424.2");
+
+    @Test
+    void givenBigDecimalAndInt_whenTimes_thenGetExpectedResult() {
+        BigDecimal result = BIG.multiply(BigDecimal.valueOf(INT));
+
+        assertEquals(0, EXPECTED.compareTo(result));
+        assertThat(result).isEqualByComparingTo(EXPECTED);
+    }
+}