My @Test Nomalize needs to throw an exception, how do I code that in my Junit test? // Test for normalize@Test- public void testNormalize() {Vector3D v1 = new Vector3D( x: 20, y: 10,Vector3D v2 new Vector3D( x: 15, y: 25,z 25);z 30);Assert.assertEquals( expected: "(0.60,0.30,0.75)",v1.normalize().toString());Assert.assertEquals( expected: "(0.36,0.60,0.72)",%3Dv2.normalize().toString());}

Answered: @Test public void testNormalize() {…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

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My @Test Nomalize needs to throw an exception, how do I code that in my Junit test?

// Test for normalize
@Test
- public void testNormalize() {
Vector3D v1 = new Vector3D( x: 20, y: 10,
Vector3D v2 new Vector3D( x: 15, y: 25,
z 25);
z 30);
Assert.assertEquals( expected: "(0.60,0.30,0.75)",
v1.normalize().toString());
Assert.assertEquals( expected: "(0.36,0.60,0.72)",
%3D
v2.normalize().toString());
}

Expert Solution

Introduction

Till Junit5, you can specify the class of Exception beside Test annotation

From Junit5, compiler allows us to write method assertThrows

Assert is before Junit5 and thus you can use the first approach

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@Test public void testNormalize() { Vector3D v1 = new Vector3D( x: 20, y: 10, Vector3D v2 = new Vector3D( x: 15, y: 25, Assert.assertEquals( expected: "(0.60,0.30,0 v1.normalize().toString()); Assert.assertEquals( expected: "(0.36,0.60,0 v2.normalize().toString());