82 lines
2.5 KiB
C#
82 lines
2.5 KiB
C#
using Elsa.Testing.Shared;
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using Elsa.Workflows;
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using NSubstitute;
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namespace Elsa.Activities.UnitTests.Looping;
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public class WhileTests
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{
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[Fact]
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public async Task Should_Not_Schedule_Body_When_Condition_Is_False()
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{
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// Arrange
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var bodyActivity = Substitute.For<IActivity>();
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var whileActivity = new While(new Input<bool>(false), bodyActivity);
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// Act
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var context = await ExecuteAsync(whileActivity);
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// Assert
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var scheduledActivities = context.WorkflowExecutionContext.Scheduler.List().ToList();
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Assert.Empty(scheduledActivities);
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}
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[Fact]
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public async Task Should_Schedule_Body_When_Condition_Is_True()
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{
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// Arrange
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var bodyActivity = Substitute.For<IActivity>();
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var whileActivity = new While(new Input<bool>(true), bodyActivity);
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// Act
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var context = await ExecuteAsync(whileActivity);
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// Assert
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var scheduledActivities = context.WorkflowExecutionContext.Scheduler.List().ToList();
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Assert.Single(scheduledActivities);
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Assert.Equal(bodyActivity, scheduledActivities.First().Activity);
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}
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[Fact]
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public async Task Should_Use_True_Factory_Method()
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{
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// Arrange
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var bodyActivity = Substitute.For<IActivity>();
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var whileActivity = While.True(bodyActivity);
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// Act
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var context = await ExecuteAsync(whileActivity);
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// Assert
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var hasBodyScheduledActivity = context.HasScheduledActivity(bodyActivity);
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Assert.True(hasBodyScheduledActivity);
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}
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[Fact]
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public async Task Should_Evaluate_Condition_Before_Each_Iteration()
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{
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// Arrange
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var evaluationCount = 0;
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var bodyActivity = Substitute.For<IActivity>();
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var whileActivity = new While(
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condition: new Input<bool>(_ => ++evaluationCount <= 1), // Only true for first evaluation
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body: bodyActivity
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);
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// Act
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var context = await ExecuteAsync(whileActivity);
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// Assert
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Assert.Equal(1, evaluationCount); // Condition should be evaluated once
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var scheduledActivities = context.WorkflowExecutionContext.Scheduler.List().ToList();
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Assert.Single(scheduledActivities); // Body should be scheduled once
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Assert.Equal(bodyActivity, scheduledActivities.First().Activity);
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}
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// Helper methods
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private static Task<ActivityExecutionContext> ExecuteAsync(IActivity activity)
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{
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return new ActivityTestFixture(activity).ExecuteAsync();
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}
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}
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