30 lines
840 B
Markdown
30 lines
840 B
Markdown
---
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title: >
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Writing custom assertions in your tests
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pubDate: 2023-08-17
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permalink: >-
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archive/2023/08/17/writing-custom-assertions-in-your-tests
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tags:
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- automated-testing
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- test-driven-development
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---
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Writing custom assertions is a great way to clean up your test code.
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Here's an example from one of my client Drupal projects:
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```language-php
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private static function assertProductVariationHasPrice(ProductVariationInterface $productVariation, string $expectedPrice): void {
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self::assertSame(
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actual: $productVariation->getPrice()->getNumber(),
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expected: $expectedPrice,
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);
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}
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```
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This one wraps a single assertion, but they could also include multiple assertions or additional steps.
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## Here's the thing
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A custom assertion is a simple function but it makes the test code more readable and less repetitive.
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