fix loop

pkg/config/config_test.go

@@ -0,0 +1,95 @@
+package config
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func TestLoadConfigRejectsUnknownField(t *testing.T) {
+	t.Parallel()
+
+	dir := t.TempDir()
+	cfgPath := filepath.Join(dir, "config.json")
+	content := `{
+  "agents": {
+    "defaults": {
+      "runtime_control": {
+        "intent_high_confidence": 0.8,
+        "unknown_field": 1
+      }
+    }
+  }
+}`
+	if err := os.WriteFile(cfgPath, []byte(content), 0o644); err != nil {
+		t.Fatalf("write config: %v", err)
+	}
+
+	_, err := LoadConfig(cfgPath)
+	if err == nil {
+		t.Fatalf("expected unknown field error")
+	}
+	if !strings.Contains(strings.ToLower(err.Error()), "unknown field") {
+		t.Fatalf("expected unknown field error, got: %v", err)
+	}
+}
+
+func TestLoadConfigRejectsTrailingJSONContent(t *testing.T) {
+	t.Parallel()
+
+	dir := t.TempDir()
+	cfgPath := filepath.Join(dir, "config.json")
+	content := `{"agents":{"defaults":{"runtime_control":{"intent_high_confidence":0.8}}}}{"extra":true}`
+	if err := os.WriteFile(cfgPath, []byte(content), 0o644); err != nil {
+		t.Fatalf("write config: %v", err)
+	}
+
+	_, err := LoadConfig(cfgPath)
+	if err == nil {
+		t.Fatalf("expected trailing json content error")
+	}
+	if !strings.Contains(err.Error(), "trailing JSON content") {
+		t.Fatalf("expected trailing JSON content error, got: %v", err)
+	}
+}
+
+func TestLoadConfigAllowsKnownRuntimeControlFields(t *testing.T) {
+	t.Parallel()
+
+	dir := t.TempDir()
+	cfgPath := filepath.Join(dir, "config.json")
+	content := `{
+  "agents": {
+    "defaults": {
+      "runtime_control": {
+        "intent_high_confidence": 0.88,
+        "run_state_max": 321,
+        "run_control_wait_keywords": ["wait", "block"],
+        "tool_parallel_safe_names": ["read_file", "memory_search"],
+        "tool_max_parallel_calls": 3
+      }
+    }
+  }
+}`
+	if err := os.WriteFile(cfgPath, []byte(content), 0o644); err != nil {
+		t.Fatalf("write config: %v", err)
+	}
+
+	cfg, err := LoadConfig(cfgPath)
+	if err != nil {
+		t.Fatalf("load config: %v", err)
+	}
+	if got := cfg.Agents.Defaults.RuntimeControl.IntentHighConfidence; got != 0.88 {
+		t.Fatalf("intent_high_confidence mismatch: got %.2f", got)
+	}
+	if got := cfg.Agents.Defaults.RuntimeControl.RunStateMax; got != 321 {
+		t.Fatalf("run_state_max mismatch: got %d", got)
+	}
+	if got := len(cfg.Agents.Defaults.RuntimeControl.RunControlWaitKeywords); got != 2 {
+		t.Fatalf("run_control_wait_keywords mismatch: got %d", got)
+	}
+	if got := cfg.Agents.Defaults.RuntimeControl.ToolMaxParallelCalls; got != 3 {
+		t.Fatalf("tool_max_parallel_calls mismatch: got %d", got)
+	}
+}