Add unit tests for template options

Author: hishamco

src/OrchardCoreContrib.PoExtractor/Program.cs

@@ -31,7 +31,7 @@ public static void Main(string[] args)
         });
         var template = app.Option("-t|--template <TEMPLATE>", "Specifies the template engine to extract the translatable strings from.", CommandOptionType.SingleValue, option =>
         {
-            option.Accepts(cfg => cfg.Values(TemplateEngine.Both, "Razor", "Liquid"));
+            option.Accepts(cfg => cfg.Values(TemplateEngine.Both, TemplateEngine.Razor, TemplateEngine.Liquid));
             option.DefaultValue = TemplateEngine.Both;
         });
         var ignoredProjects = app.Option("-i|--ignore <IGNORED_PROJECTS>", "Ignores extracting PO files from a given project(s).", CommandOptionType.MultipleValue);

test/OrchardCoreContrib.PoExtractor.Tests/ProgramTests.cs

@@ -0,0 +1,63 @@
+using Xunit;
+
+namespace OrchardCoreContrib.PoExtractor.Tests;
+
+public class ProgramTests
+{
+    [Fact]
+    public void Main_NoTemplateOption_UsesBothRazorAndLiquid()
+    {
+        // Arrange
+        var root = Path.Combine(Path.GetTempPath(), "PoExtractorTests", Guid.NewGuid().ToString("N"));
+        var input = Path.Combine(root, "input");
+        var output = Path.Combine(root, "output");
+        var project = Path.Combine(input, "TestModule");
+
+        Directory.CreateDirectory(project);
+        Directory.CreateDirectory(output);
+
+        File.WriteAllText(Path.Combine(project, "TestModule.csproj"), """
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+  </PropertyGroup>
+</Project>
+""");
+
+        File.WriteAllText(Path.Combine(project, "Index.cshtml"), """
+@T["Hello from Razor"]
+""");
+
+        File.WriteAllText(Path.Combine(project, "index.liquid"), """
+{{ "Hello from Liquid" | t }}
+""");
+
+        var potFileName = "all.pot";
+
+        try
+        {
+            // Act
+            Program.Main(
+            [
+                input,
+                output,
+                "--single", potFileName
+            ]);
+
+            // Assert
+            var potPath = Path.Combine(output, potFileName);
+            Assert.True(File.Exists(potPath));
+
+            var pot = File.ReadAllText(potPath);
+            Assert.Contains("Hello from Razor", pot);
+            Assert.Contains("Hello from Liquid", pot);
+        }
+        finally
+        {
+            if (Directory.Exists(root))
+            {
+                Directory.Delete(root, recursive: true);
+            }
+        }
+    }
+}