feat(Struct)

test/ConstString.test.js

@@ -0,0 +1,27 @@
+import { describe, expect, test } from "vitest";
+import { ConstString, parse, serialize, sizeofHead } from "../src";
+import { filledDataView, sizedDataView } from ".";
+
+describe(ConstString.name, () => {
+  test('serialize', () => {
+    const expected = filledDataView([0x68, 0x65, 0x6C, 0x00, 0x00])
+    let dv = sizedDataView(4)
+    expect(() => serialize(dv, 'hello', ConstString(5))).toThrow()
+
+    dv = sizedDataView(5)
+
+    serialize(dv, 'hello', ConstString(3))
+    expect(dv).toEqual(expected)
+  })
+
+  test('parse', () => {
+    const expected = 'hel'
+    const dv = filledDataView([0x68, 0x65, 0x6C, 0x6C, 0x6F])
+    const actual = parse(dv, ConstString(3))
+    expect(actual).toEqual(expected)
+  })
+
+  test('sizeof', () => {
+    expect(sizeofHead(ConstString(2))).toEqual(2)
+  })
+})