refactor: remove IO route mapping, add HTTP API tests, system prompt update

internal/agent/core/agent_helpers_test.go

@@ -0,0 +1,78 @@
+package core
+
+import (
+	"testing"
+)
+
+func TestTruncateStr(t *testing.T) {
+	tests := []struct {
+		input string
+		max   int
+		want  string
+	}{
+		{"hello", 10, "hello"},
+		{"hello world", 5, "hello..."},
+		{"你好世界", 2, "你好..."},
+		{"", 5, ""},
+		{"abc", 3, "abc"},
+	}
+	for _, tt := range tests {
+		got := truncateStr(tt.input, tt.max)
+		if got != tt.want {
+			t.Errorf("truncateStr(%q, %d) = %q, want %q", tt.input, tt.max, got, tt.want)
+		}
+	}
+}
+
+func TestGetString(t *testing.T) {
+	m := map[string]interface{}{
+		"name": "张三",
+		"age":  30,
+	}
+
+	if got := getString(m, "name"); got != "张三" {
+		t.Errorf("expected '张三', got %q", got)
+	}
+	if got := getString(m, "age"); got != "" {
+		t.Errorf("expected empty for int, got %q", got)
+	}
+	if got := getString(m, "nonexistent"); got != "" {
+		t.Errorf("expected empty for missing key, got %q", got)
+	}
+	if got := getString(nil, "key"); got != "" {
+		t.Errorf("expected empty for nil map, got %q", got)
+	}
+}
+
+func TestGetFloat(t *testing.T) {
+	m := map[string]interface{}{
+		"count": 42.5,
+		"score": 100,
+		"name":  "test",
+	}
+
+	if got := getFloat(m, "count"); got != 42.5 {
+		t.Errorf("expected 42.5, got %f", got)
+	}
+	if got := getFloat(m, "score"); got != 100.0 {
+		t.Errorf("expected 100.0, got %f", got)
+	}
+	if got := getFloat(m, "name"); got != 0 {
+		t.Errorf("expected 0 for string, got %f", got)
+	}
+	if got := getFloat(m, "nonexistent"); got != 0 {
+		t.Errorf("expected 0 for missing key, got %f", got)
+	}
+	if got := getFloat(nil, "key"); got != 0 {
+		t.Errorf("expected 0 for nil map, got %f", got)
+	}
+}
+
+func TestGetFloatInt(t *testing.T) {
+	m := map[string]interface{}{
+		"top_k": float64(5),
+	}
+	if got := getFloat(m, "top_k"); got != 5.0 {
+		t.Errorf("expected 5.0, got %f", got)
+	}
+}