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In this video, we're going to explore how we

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can actually use Arrange/ Act/ Assert, and we're going

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to actually write some test code in that format.

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So in other words, we're writing our first test case.

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Let's jump in now and see how we can do that together.

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Now, if I want to stick to my Arrange/ Act/ Assert

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I might say that a = 10

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B equals 20.

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result =

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Calculator

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.add a, b

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and my assertion might be

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so equals. I expected to be 30.

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I can pass in the actual result here.

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Notice that I can use the static import there

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as well, and just type assertEquals directly without

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having to prefix it with assert..

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So if I run this now,

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that should pass, that's all well and good. So great.

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Now we know how to use Arrange/ Act/ Assert.

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You should be able to write test going forwards.