fix: generate ai table docx exports

internal/httpapi/ai_export_test.go

@@ -0,0 +1,55 @@
+package httpapi
+
+import (
+	"archive/zip"
+	"bytes"
+	"io"
+	"strings"
+	"testing"
+	"time"
+
+	"git.118im.com/im_team/im_workbench/internal/store"
+)
+
+func TestAITableAnalysisDocx(t *testing.T) {
+	docx, err := aiTableAnalysisDocx(&store.AITableAnalysis{
+		RecordID:       "airec_tbl_test",
+		FileName:       "sales.xlsx",
+		FileType:       "xlsx",
+		FileSize:       1234,
+		Topic:          "销售数据",
+		MetricsJSON:    `[{"name":"销售额","value":"12万","change_text":"+10%","trend":"up"}]`,
+		AlertsJSON:     `[{"level":"warning","title":"异常波动","description":"订单量下降"}]`,
+		Interpretation: "整体销售额增长。",
+		CreatedAt:      time.Date(2026, 9, 29, 8, 0, 0, 0, time.UTC),
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	zr, err := zip.NewReader(bytes.NewReader(docx), int64(len(docx)))
+	if err != nil {
+		t.Fatalf("docx is not a zip: %v", err)
+	}
+	var document string
+	for _, file := range zr.File {
+		if file.Name != "word/document.xml" {
+			continue
+		}
+		rc, err := file.Open()
+		if err != nil {
+			t.Fatal(err)
+		}
+		data, err := io.ReadAll(rc)
+		_ = rc.Close()
+		if err != nil {
+			t.Fatal(err)
+		}
+		document = string(data)
+		break
+	}
+	for _, want := range []string{"销售数据", "销售额", "异常波动", "整体销售额增长"} {
+		if !strings.Contains(document, want) {
+			t.Fatalf("document.xml missing %q: %s", want, document)
+		}
+	}
+}