frame-processor/tests/FrameProcessor.Tests/ApiKeyTests.cs

using FrameProcessor.Domain;

namespace FrameProcessor.Tests;

public class ApiKeyTests
{
    [Fact]
    public void Matches_ReturnsTrue_ForIdenticalKey()
    {
        var key = new ApiKey("s3cret-value");
        Assert.True(key.Matches("s3cret-value"));
    }

    [Fact]
    public void Matches_ReturnsFalse_ForDifferentKey()
    {
        var key = new ApiKey("s3cret-value");
        Assert.False(key.Matches("wrong"));
    }

    [Fact]
    public void Matches_ReturnsFalse_ForKeyOfDifferentLength()
    {
        var key = new ApiKey("s3cret");
        Assert.False(key.Matches("s3cret-value"));
        Assert.False(key.Matches("s3cre"));
    }

    [Fact]
    public void Matches_ReturnsFalse_ForNull()
    {
        var key = new ApiKey("s3cret");
        Assert.False(key.Matches(null));
    }

    [Fact]
    public void Matches_ReturnsFalse_ForEmptyCandidate_WhenKeyIsNotEmpty()
    {
        var key = new ApiKey("s3cret");
        Assert.False(key.Matches(string.Empty));
    }

    [Fact]
    public void Matches_IsCaseSensitive()
    {
        var key = new ApiKey("Secret");
        Assert.False(key.Matches("secret"));
        Assert.False(key.Matches("SECRET"));
    }

    [Fact]
    public void Matches_HandlesMultiByteUtf8()
    {
        var key = new ApiKey("nyckel-äöå");
        Assert.True(key.Matches("nyckel-äöå"));
        Assert.False(key.Matches("nyckel-aoa"));
    }

    [Fact]
    public void Constructor_ThrowsOnNull()
    {
        Assert.Throws<ArgumentNullException>(() => new ApiKey(null!));
    }

    [Fact]
    public void Value_ReturnsConfiguredString()
    {
        var key = new ApiKey("abc");
        Assert.Equal("abc", key.Value);
    }

    [Fact]
    public void DefaultStruct_Value_IsEmpty()
    {
        var key = default(ApiKey);
        Assert.Equal(string.Empty, key.Value);
    }
}