48 lines
2.0 KiB
Markdown
48 lines
2.0 KiB
Markdown
# Vector2EqualityComparer
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Use this class to compare two [Vector2](https://docs.unity3d.com/ScriptReference/Vector2.html) objects for equality with [NUnit](http://www.nunit.org/) constraints. Use the static `Vector2EqualityComparer.Instance` to have the calculation error value set to default 0.0001f. For any other error value, instantiate a new comparer object with the [one argument constructor](#constructors).
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## Static properties
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| Syntax | Description |
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| ---------- | ------------------------------------------------------------ |
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| `Instance` | A comparer instance with the default error value set to 0.0001f. |
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## Constructors
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| Syntax | Description |
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| -------------------------------------- | ---------------------------------------------- |
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| `Vector2EqualityComparer(float error)` | Creates an instance with a custom error value. |
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## Public methods
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| Syntax | Description |
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| ------------------------------------------ | ------------------------------------------------------------ |
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| `Equals(Vector2 expected, Vector2 actual)` | Compares the `actual` and `expected` `Vector2` objects for equality using the [Utils.AreFloatsEqual](xref:UnityEngine.TestTools.Utils.Utils.AreFloatsEqual*) method. |
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## Example
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```c#
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[TestFixture]
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public class Vector2Test
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{
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[Test]
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public void VerifyThat_TwoVector2ObjectsAreEqual()
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{
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// Custom calculation error
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var actual = new Vector2(10e-7f, 10e-7f);
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var expected = new Vector2(0f, 0f);
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var comparer = new Vector2EqualityComparer(10e-6f);
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Assert.That(actual, Is.EqualTo(expected).Using(comparer));
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//Default error 0.0001f
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actual = new Vector2(0.01f, 0.01f);
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expected = new Vector2(0.01f, 0.01f);
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Assert.That(actual, Is.EqualTo(expected).Using(Vector2EqualityComparer.Instance));
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}
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}
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```
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