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Newsgroups: comp.lang.java.help
Date: Thu, 21 Mar 2019 04:58:20 -0700 (PDT)
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Subject: Re: What is/are the difference(s) between assertSame and assertEquals in JUnit?
From: onlyfullstackdev@gmail.com
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Xref: csiph.com comp.lang.java.help:4256

assertEquals - It check the objects are equal or not based on the overridde=
d equals() method of that class. So we can check the equality of object bas=
ed on their state(compare the values of their instance variables).

assertEquals() The assertEquals() method compares two objects for equality,=
 using their equals() method.

@Test
public void assertEquals_example() {
    Employee employeeNew =3D new Employee();
    employee.setSalary(1000000.0);
    assertEquals("EMPLOYEE OBJECT", employee, employeeNew);
}
If the two objects are equal according to there implementation of their equ=
als() method, the assertEquals() method will return normally. Otherwise, th=
e assertEquals() method will throw an exception, and the test will stop the=
re.

assertSame() and assertNotSame() The assertSame() and assertNotSame() metho=
ds tests if two object references point to the same object or not. It is no=
t enough that the two objects pointed to are equals according to their equa=
ls() methods. It must be exactly the same object pointed to.

Here is a simple example:

@Test
public void assertSame_assertNoSame_example() {

    assertSame(employeeService.getEmployeeFromId(1), employeeService.getEmp=
loyeeFromId(1));
    assertNotSame(employee, employeeService.getEmployeeFromId(1)); // We wi=
ll get null as response
}
You can follow below url to get more information: https://onlyfullstack.blo=
gspot.com/2019/02/junit-assert-methods.html

https://onlyfullstack.blogspot.com/2019/02/junit-tutorial.html


On Thursday, August 7, 2008 at 1:53:11 AM UTC+8, RC wrote:
> In JUnit Assert class have
>=20
> assertSame(Object expect, Object actual)
> and
> assertEquals(Object expect, Object actual)
>=20
> What is/are the difference(s)?
>=20
> Interesting, there is
>=20
> assertNotSame(Object expect, Object actual)
>=20
> But there is no
>=20
> assertNotEquals(Object expect, Object actual)