Add tests

tests/RepoM.ActionMenu.Core.Tests/Yaml/Model/ScribanPredicateTests.cs

@@ -0,0 +1,53 @@
+namespace RepoM.ActionMenu.Core.Tests.Yaml.Model;
+
+using System;
+using System.Threading.Tasks;
+using FluentAssertions;
+using RepoM.ActionMenu.Core.Misc;
+using RepoM.ActionMenu.Core.Yaml.Model.Templating;
+using RepoM.ActionMenu.Interface.ActionMenuFactory;
+using RepoM.ActionMenu.Interface.YamlModel.Templating;
+using Scriban;
+using Xunit;
+
+public class ScribanPredicateTests
+{
+    [Fact]
+    public async Task EvaluateAsync_ShouldThrowPredicateEvaluationException_WhenPredicateIsWrong()
+    {
+        // arrange
+        var sut = new ScribanPredicate
+            {
+                Value = "file.exists x",
+            };
+        var realTemplateParser = new FixedTemplateParser();
+        ((ICreateTemplate)sut).CreateTemplate(realTemplateParser);
+        ITemplateEvaluator templateEvaluator = new FakeTemplateContext(realTemplateParser);
+
+        // act
+        Func<Task<bool>> act = async () => await sut.EvaluateAsync(templateEvaluator);
+
+        // assert
+        await act.Should().ThrowAsync<PredicateEvaluationException>().WithMessage("Could not evaluate predicate 'file.exists x' because <input>(1,6) : error : Cannot get the member file.exists for a null object.");
+    }
+}
+
+file class FakeTemplateContext : TemplateContext, ITemplateEvaluator
+{
+    private readonly ITemplateParser _templateParser;
+
+    public FakeTemplateContext(ITemplateParser templateParser)
+    {
+        _templateParser = templateParser;
+    }
+    public Task<string> RenderStringAsync(string text)
+    {
+        throw new NotImplementedException();
+    }
+
+    public async Task<object> EvaluateAsync(string text)
+    {
+        Template template = _templateParser.ParseScriptOnly(text);
+        return await template.EvaluateAsync(this).ConfigureAwait(false);
+    }
+}