From eef6b9ee6e908cdbe9faa06b086358ffbc329153 Mon Sep 17 00:00:00 2001
From: Lukas Reichwein <lukas.reichwein@informatik.hs-fulda.de>
Date: Tue, 16 Jul 2019 18:00:49 +0200
Subject: [PATCH] The absolute value of an complex Number with only a real part
 can is now implemented in the absolutValueOf function

---
 .../ugsbo/complexnumcalc/ComplexNumber.java   |  5 ++++
 .../AbsoluteValueOfComplexNumbersTest.java    | 29 +++++++++++++++++++
 2 files changed, 34 insertions(+)
 create mode 100644 src/test/java/com/ugsbo/complexnumcalc/AbsoluteValueOfComplexNumbersTest.java

diff --git a/src/main/java/com/ugsbo/complexnumcalc/ComplexNumber.java b/src/main/java/com/ugsbo/complexnumcalc/ComplexNumber.java
index 3f50272..90769e5 100644
--- a/src/main/java/com/ugsbo/complexnumcalc/ComplexNumber.java
+++ b/src/main/java/com/ugsbo/complexnumcalc/ComplexNumber.java
@@ -128,4 +128,9 @@ public class ComplexNumber {
         return qoutient;
     }
 
+    public Double absolutValueOf(){
+        Double absoluteValue = Math.sqrt(Math.pow(this.realPart, 2)) ;
+        return absoluteValue;
+    }
+
 }
\ No newline at end of file
diff --git a/src/test/java/com/ugsbo/complexnumcalc/AbsoluteValueOfComplexNumbersTest.java b/src/test/java/com/ugsbo/complexnumcalc/AbsoluteValueOfComplexNumbersTest.java
new file mode 100644
index 0000000..be70ff6
--- /dev/null
+++ b/src/test/java/com/ugsbo/complexnumcalc/AbsoluteValueOfComplexNumbersTest.java
@@ -0,0 +1,29 @@
+package com.ugsbo.complexnumcalc;
+
+import static org.junit.Assert.assertEquals;
+import org.junit.Test;
+
+public class AbsoluteValueOfComplexNumbersTest {
+
+    @Test
+    public void TheAbsoluteValueOfAComplexNumberWithOnlyARealPart_IsNotTHeAbsoluteValueOfTheRealPart() {
+        ComplexNumber complexNumber = new ComplexNumber(Double.valueOf(4), Double.valueOf(0));
+
+        Double expected = Double.valueOf(4);
+
+        Double actual = complexNumber.absolutValueOf();
+
+        assertEquals("The absolute value of an complex number with only an real part should be the absolute value of that real part", expected, actual);
+    }
+
+    @Test
+    public void TheAbsoluteValueOfAComplexNumberWithOnlyANegativeRealPart_IsNotTheAbsoluteValueOfTheRealPart() {
+        ComplexNumber complexNumber = new ComplexNumber(Double.valueOf(-4), Double.valueOf(0));
+
+        Double expected = Double.valueOf(4);
+
+        Double actual = complexNumber.absolutValueOf();
+
+        assertEquals("The absolute value of an complex number with only an negative real part should be the absolute value of that real part", expected, actual);
+    }
+}
\ No newline at end of file