16 lines
666 B
Markdown
16 lines
666 B
Markdown
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up:: [[TypeScript]]
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X:: [[JavaScript]]
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tags::
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## Here is an example of a simple test using Jest:
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```tsx
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const add = (a, b) => a + b;
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test('adds 1 + 2 to equal 3', () => {
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expect(add(1, 2)).toBe(3);
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});
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```
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In this example, **`add`** is a simple function that takes two numbers and returns their sum. The test uses the **`test`** method provided by Jest to create a test case, which checks that calling **`add`** with the arguments **`1`** and **`2`** returns the expected result of **`3`**. The test uses the **`expect`** method provided by Jest to make the assertion, and the **`toBe`** matcher to check that the actual value is equal to the expected value.
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