How to test ENUMs using JUNIT

Question

How can I create test cases using JUNIT to test ENUMS types. Below I added my code with the enum type.

public class TrafficProfileExtension { public static enum CosProfileType { BENIGN ("BENIGN"), CUSTOMER ("CUSTOMER"), FRAME ("FRAME"), PPCO ("PPCO"), STANDARD ("STANDARD"), W_RED ("W-RED"), LEGACY("LEGACY"), OPTIONB ("OPTIONB"); private final String cosProfileType; private CosProfileType(String s) { cosProfileType = s; } public boolean equalsName(String otherName){ return (otherName == null)? false:cosProfileType.equals(otherName); } public String toString(){ return cosProfileType; } } }

I created a test case for my enum CosProfileType, and I am getting an error on CosProfileType.How can I make this test case work?

@Test public void testAdd() { TrafficProfileExtension ext = new TrafficProfileExtension(); assertEquals("FRAME", ext.CosProfileType.FRAME); }

You are asserting that a String is equal to an enum instance. What is ext? — Boris the Spider
– Boris the Spider, Commented Aug 21, 2015 at 22:33

Reimeus · Accepted Answer · 2015-08-21 22:38:52Z

22

Since CosProfileType is declared public static it is effectively a top level class (enum) so you could do

assertEquals("FRAME", CosProfileType.FRAME.name());

answered Aug 21, 2015 at 22:38

Reimeus

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1 Comment

Boris the Spider Over a year ago

Worth noting that an enum is always a static nested class - it cannot be an inner class. The static modifier is redundant in this case...

jbarrueta · Accepted Answer · 2015-08-21 22:34:25Z

You are comparing and String to an Enum that will never be equal.

Try:

@Test public void testAdd() { TrafficProfileExtension ext = new TrafficProfileExtension(); assertEquals("FRAME", ext.CosProfileType.FRAME.toString()); }

Try assertEquals("FRAME", CosProfileType.FRAME.toString());

Rohit Raghuvanshi · Accepted Answer · 2020-05-31 20:52:35Z

assertEquals("FRAME", CosProfileType.FRAME.name());

It will work only when field and value both are same but won't wotk for below:

FRAME ("frame_value")

Better to check with

assertEquals("FRAME", CosProfileType.FRAME.getFieldName());

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