FlowIdGeneratorTests.cs

namespace CSharpInteractive.Tests;

public class FlowIdGeneratorTests
{
    private readonly Mock<ICISettings> _teamCitySettings = new();

    [Fact]
    public void ShouldProvideRootFlowIdWhenItIsSpecified()
    {
        // Given
        _teamCitySettings.SetupGet(i => i.FlowId).Returns("root");
        var generator = CreateInstance();

        // When
        var flowId = generator.NewFlowId();

        // Then
        flowId.ShouldBe("root");
    }

    [Fact]
    public void ShouldProvideNexFlowIdAfterRootFlowIdWhenItIsSpecified()
    {
        // Given
        var generator = CreateInstance();
        _teamCitySettings.SetupGet(i => i.FlowId).Returns("root");

        // When
        generator.NewFlowId();
        var flowId = generator.NewFlowId();

        // Then
        flowId.ShouldNotBe("root");
    }

    [Fact]
    public void ShouldProvideFlowIdWhenRootFlowIdIsNotSpecified()
    {
        // Given
        var generator = CreateInstance();

        // When
        var flowId = generator.NewFlowId();

        // Then
        flowId.ShouldNotBe("root");
    }

    [Fact]
    public void ShouldProvideGenerateFlowIds()
    {
        // Given
        var generator = CreateInstance();

        // When
        var flowId1 = generator.NewFlowId();
        var flowId2 = generator.NewFlowId();

        // Then
        flowId1.ShouldNotBe(flowId2);
    }

    private FlowIdGenerator CreateInstance() =>
        new(_teamCitySettings.Object);
}