first commit

apps/miniprogram/utils/svgDataUri.test.ts

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+import { describe, expect, it } from "vitest";
+
+const { toSvgDataUri } = require("./svgDataUri.js");
+
+function decodeSvgFromDataUri(uri: string) {
+  const prefix = "data:image/svg+xml;base64,";
+  expect(uri.startsWith(prefix)).toBe(true);
+  return Buffer.from(uri.slice(prefix.length), "base64").toString("utf8");
+}
+
+describe("svgDataUri", () => {
+  it("把 SVG 编码为 base64 data URI", () => {
+    const svg = '<svg xmlns="http://www.w3.org/2000/svg"><path fill="#67D1FF" d="M0 0h10v10H0z"/></svg>';
+    const uri = toSvgDataUri(svg);
+    expect(decodeSvgFromDataUri(uri)).toBe(svg);
+  });
+
+  it("对非 ASCII 字符使用 UTF-8 编码，避免 data URI 损坏", () => {
+    const svg = '<svg xmlns="http://www.w3.org/2000/svg"><text>终端</text></svg>';
+    const uri = toSvgDataUri(svg);
+    expect(decodeSvgFromDataUri(uri)).toContain("终端");
+  });
+});