From f5b4a5e7023881474110c19e192246694b1bc99d Mon Sep 17 00:00:00 2001
From: Dionis Prifti <dionissds@gmail.com>
Date: Thu, 29 Nov 2018 15:46:33 +0100
Subject: [PATCH 1/3] BAEL-2347: Added test examples for Coupound Assignment
 Operators.

---
 .../CompoundOperatorsTest.java                | 111 ++++++++++++++++++
 1 file changed, 111 insertions(+)
 create mode 100644 core-java-lang/src/test/java/com/baeldung/compoundoperators/CompoundOperatorsTest.java

diff --git a/core-java-lang/src/test/java/com/baeldung/compoundoperators/CompoundOperatorsTest.java b/core-java-lang/src/test/java/com/baeldung/compoundoperators/CompoundOperatorsTest.java
new file mode 100644
index 0000000000..4a7833af95
--- /dev/null
+++ b/core-java-lang/src/test/java/com/baeldung/compoundoperators/CompoundOperatorsTest.java
@@ -0,0 +1,111 @@
+package com.baeldung.compoundoperators;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class CompoundOperatorsTest {
+
+    @Test
+    public void whenAssignmentOperatorIsUsed_thenValueIsAssigned() {
+        int x = 5;
+
+        assertEquals(5, x);
+    }
+
+    @Test
+    public void whenCompoundAssignmentUsed_thenSameAsSimpleAssignment() {
+        int a = 3, b = 3, c = -2;
+        a = a * c; // Simple assignment operator
+        b *= c; // Compound assignment operator
+
+        assertEquals(a, b);
+    }
+
+    @Test
+    public void whenAssignmentOperatorIsUsed_thenValueIsReturned() {
+        long x = 5;
+        long y = (x=3);
+
+        assertEquals(3, y);
+        assertEquals(y, x);
+    }
+
+    @Test
+    public void whenCompoundOperatorsAreUsed_thenOperationsArePerformedAndAssigned() {
+        //Simple assignment
+        int x = 5; //x is 5
+
+        //Incrementation
+        x += 5; //x is 10
+        assertEquals(10, x);
+
+        //Decrementation
+        x -= 2; //x is 8
+        assertEquals(8, x);
+
+        //Multiplication
+        x *= 2; //x is 16
+        assertEquals(16, x);
+
+        //Division
+        x /= 4; //x is 4
+        assertEquals(4, x);
+
+        //Modulus
+        x %= 3; //x is 1
+        assertEquals(1, x);
+
+
+        //Binary AND
+        x &= 4; //x is 0
+        assertEquals(0, x);
+
+        //Binary exclusive OR
+        x ^= 4; //x is 4
+        assertEquals(4, x);
+
+        //Binary inclusive OR
+        x |= 8; //x is 12
+        assertEquals(12, x);
+
+
+        //Binary Left Shift
+        x <<= 2; //x is 48
+        assertEquals(48, x);
+
+        //Binary Right Shift
+        x >>= 2; //x is 12
+        assertEquals(12, x);
+
+        //Shift right zero fill
+        x >>>= 1; //x is 6
+        assertEquals(6, x);
+    }
+
+    @Test(expected = NullPointerException.class)
+    public void whenArrayIsNull_thenThrowNullException() {
+        int[] numbers = null;
+
+        //Trying Incrementation
+        numbers[2] += 5;
+    }
+
+    @Test(expected = ArrayIndexOutOfBoundsException.class)
+    public void whenArrayIndexNotCorrect_thenThrowArrayIndexException() {
+        int[] numbers = {0, 1};
+
+        //Trying Incrementation
+        numbers[2] += 5;
+    }
+
+    @Test
+    public void whenArrayIndexIsCorrect_thenPerformOperation() {
+        int[] numbers = {0, 1};
+
+        //Incrementation
+        numbers[1] += 5;
+        assertEquals(6, numbers[1]);
+    }
+
+}

From 3b42c4882005976595e55d9eb2239133859e4a34 Mon Sep 17 00:00:00 2001
From: Dionis Prifti <dionissds@gmail.com>
Date: Thu, 29 Nov 2018 21:05:59 +0100
Subject: [PATCH 2/3] BAEL-2347: Fixed test about return value of assignment
 operator.

---
 .../com/baeldung/compoundoperators/CompoundOperatorsTest.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/core-java-lang/src/test/java/com/baeldung/compoundoperators/CompoundOperatorsTest.java b/core-java-lang/src/test/java/com/baeldung/compoundoperators/CompoundOperatorsTest.java
index 4a7833af95..3b3478b38e 100644
--- a/core-java-lang/src/test/java/com/baeldung/compoundoperators/CompoundOperatorsTest.java
+++ b/core-java-lang/src/test/java/com/baeldung/compoundoperators/CompoundOperatorsTest.java
@@ -24,8 +24,8 @@ public class CompoundOperatorsTest {
 
     @Test
     public void whenAssignmentOperatorIsUsed_thenValueIsReturned() {
-        long x = 5;
-        long y = (x=3);
+        long x = 1;
+        long y = (x+=2);
 
         assertEquals(3, y);
         assertEquals(y, x);

From 6f717e04d5f119f39fd1753f6f3a234217b7a5bf Mon Sep 17 00:00:00 2001
From: Loredana Crusoveanu <lore.crusoveanu@gmail.com>
Date: Fri, 30 Nov 2018 20:26:30 +0200
Subject: [PATCH 3/3] Update and rename CompoundOperatorsTest.java to
 CompoundOperatorsUnitTest.java

---
 ...ompoundOperatorsTest.java => CompoundOperatorsUnitTest.java} | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
 rename core-java-lang/src/test/java/com/baeldung/compoundoperators/{CompoundOperatorsTest.java => CompoundOperatorsUnitTest.java} (98%)

diff --git a/core-java-lang/src/test/java/com/baeldung/compoundoperators/CompoundOperatorsTest.java b/core-java-lang/src/test/java/com/baeldung/compoundoperators/CompoundOperatorsUnitTest.java
similarity index 98%
rename from core-java-lang/src/test/java/com/baeldung/compoundoperators/CompoundOperatorsTest.java
rename to core-java-lang/src/test/java/com/baeldung/compoundoperators/CompoundOperatorsUnitTest.java
index 3b3478b38e..532776edd4 100644
--- a/core-java-lang/src/test/java/com/baeldung/compoundoperators/CompoundOperatorsTest.java
+++ b/core-java-lang/src/test/java/com/baeldung/compoundoperators/CompoundOperatorsUnitTest.java
@@ -4,7 +4,7 @@ import org.junit.Test;
 
 import static org.junit.Assert.assertEquals;
 
-public class CompoundOperatorsTest {
+public class CompoundOperatorsUnitTest {
 
     @Test
     public void whenAssignmentOperatorIsUsed_thenValueIsAssigned() {