1 files changed, 68 insertions, 0 deletions
diff --git a/internal/appconfig/app_feature_sections_test.go b/internal/appconfig/app_feature_sections_test.go
new file mode 100644
index 0000000..1f9ac2d
--- /dev/null
+++ b/internal/appconfig/app_feature_sections_test.go
@@ -0,0 +1,68 @@
+package appconfig
+
+import (
+	"reflect"
+	"testing"
+)
+
+// buildFeatureApp returns an App whose FeatureConfig subsystems are all
+// populated, used to verify the fine-grained section accessors.
+func buildFeatureApp() App {
+	cfg := App{}
+	cfg.ApplyFeatureSection(testFeatureConfig())
+	return cfg
+}
+
+func TestIgnoreSectionCopiesAndReads(t *testing.T) {
+	cfg := buildFeatureApp()
+	got := cfg.IgnoreSection()
+	if !reflect.DeepEqual(got.IgnoreExtraPatterns, []string{"vendor/**", "tmp/**"}) {
+		t.Fatalf("IgnoreExtraPatterns = %v", got.IgnoreExtraPatterns)
+	}
+	// Mutating the returned copy must not affect the source App.
+	got.IgnoreExtraPatterns[0] = "mutated"
+	if cfg.IgnoreExtraPatterns[0] == "mutated" {
+		t.Fatal("IgnoreSection did not return a defensive copy")
+	}
+}
+
+func TestStatsSectionReads(t *testing.T) {
+	cfg := buildFeatureApp()
+	if got := cfg.StatsSection(); got.StatsWindowMinutes != 15 {
+		t.Fatalf("StatsWindowMinutes = %d, want 15", got.StatsWindowMinutes)
+	}
+}
+
+func TestTmuxEditSectionCopies(t *testing.T) {
+	cfg := buildFeatureApp()
+	got := cfg.TmuxEditSection()
+	if got.TmuxEditDefaultAgent != "codex" || len(got.TmuxEditAgents) != 1 {
+		t.Fatalf("unexpected tmux edit section: %+v", got)
+	}
+	got.TmuxEditAgents[0].Name = "mutated"
+	if cfg.TmuxEditAgents[0].Name == "mutated" {
+		t.Fatal("TmuxEditSection did not return a defensive copy")
+	}
+}
+
+func TestTmuxActionSectionCopies(t *testing.T) {
+	cfg := App{}
+	cfg.TmuxActionMenu = []TmuxActionMenuEntry{{Kind: "rewrite"}}
+	got := cfg.TmuxActionSection()
+	if len(got.TmuxActionMenu) != 1 || got.TmuxActionMenu[0].Kind != "rewrite" {
+		t.Fatalf("unexpected tmux action section: %+v", got)
+	}
+	got.TmuxActionMenu[0].Kind = "mutated"
+	if cfg.TmuxActionMenu[0].Kind == "mutated" {
+		t.Fatal("TmuxActionSection did not return a defensive copy")
+	}
+}
+
+func TestMCPSectionReads(t *testing.T) {
+	cfg := buildFeatureApp()
+	got := cfg.MCPSection()
+	if got.MCPPromptsDir != ".hexai/prompts" || !got.MCPSlashCommandSync ||
+		got.MCPSlashCommandDir != ".hexai/slash" {
+		t.Fatalf("unexpected MCP section: %+v", got)
+	}
+}