1 files changed, 57 insertions, 0 deletions
diff --git a/tests/Agent.Core.Tests/ConfigurationTests.cs b/tests/Agent.Core.Tests/ConfigurationTests.cs
index 79c746d..e84d132 100644
--- a/tests/Agent.Core.Tests/ConfigurationTests.cs
+++ b/tests/Agent.Core.Tests/ConfigurationTests.cs
@@ -44,6 +44,63 @@ public sealed class ConfigurationTests
     }
 
     [Fact]
+    public void CommandLine_defaults_to_serve_when_command_is_omitted()
+    {
+        Assert.Equal(AppCommand.Serve, CommandLine.Parse([]).Command);
+        CommandLine withOption = CommandLine.Parse(["--lang", "ja"]);
+        Assert.Equal(AppCommand.Serve, withOption.Command);
+        Assert.Equal("ja", withOption.Language);
+    }
+
+    [Fact]
+    public void Local_configuration_recursively_merges_maps_and_replaces_sequences()
+    {
+        using var directory = new TestDirectory();
+        string config = CreateValidConfiguration(directory);
+        directory.File("agent.local.yaml", """
+            application:
+              language: ja
+            sandbox:
+              filesystem:
+                read: [C:/local-only]
+            """);
+
+        AgentConfiguration result = ConfigurationLoader.Load(config);
+
+        Assert.Equal("ja", result.Application.Language);
+        Assert.Equal(["C:/local-only"], result.Sandbox.Filesystem.Read);
+        Assert.Equal("model", result.Ollama.Model);
+    }
+
+    [Fact]
+    public void Unknown_local_configuration_property_is_fatal()
+    {
+        using var directory = new TestDirectory();
+        string config = CreateValidConfiguration(directory);
+        directory.File("agent.local.yaml", "unknown_local: true\n");
+
+        Assert.Throws<ConfigurationException>(() => ConfigurationLoader.Load(config));
+    }
+
+    [Fact]
+    public void Execute_file_without_process_approval_reports_canonical_keys()
+    {
+        using var directory = new TestDirectory();
+        string config = CreateValidConfiguration(directory);
+        string executable = directory.File("tools/tool.exe", "fixture").Replace('\\', '/');
+        directory.File("agent.local.yaml", $$"""
+            sandbox:
+              filesystem:
+                execute: [{{executable}}]
+            """);
+
+        ConfigurationException error = Assert.Throws<ConfigurationException>(() => ConfigurationLoader.Load(config));
+        Assert.Contains("sandbox.filesystem.execute", error.Message, StringComparison.Ordinal);
+        Assert.Contains("sandbox.process.approvals", error.Message, StringComparison.Ordinal);
+        Assert.Contains(Path.GetFullPath(executable), error.Message, StringComparison.OrdinalIgnoreCase);
+    }
+
+    [Fact]
     public void SkillLoader_loads_standard_skill_directories_only()
     {
         using var directory = new TestDirectory();