dbc editor vscode extentsion

vscode-dbc-editor/test/codec.test.ts

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+import assert from "node:assert/strict";
+import test from "node:test";
+import { DbcTable } from "../src/dbc/table";
+import { DbcSchema } from "../src/dbc/types";
+
+const schema: DbcSchema = {
+  name: "Synthetic",
+  build: 12340,
+  recordSize: 12,
+  columns: [
+    { name: "ID", kind: "int", bits: 32, offset: 0, isId: true },
+    { name: "Scale", kind: "float", bits: 32, offset: 4 },
+    { name: "Name", kind: "string", bits: 32, offset: 8 }
+  ]
+};
+
+test("reads, edits and writes WDBC records and strings", () => {
+  const table = new DbcTable(makeFixture(), schema);
+  assert.equal(table.header.recordCount, 2);
+  assert.equal(table.getCell(0, 0), "1");
+  assert.equal(table.getCell(0, 1), "1.5");
+  assert.equal(table.getCell(0, 2), "hello");
+  assert.equal(table.getCell(1, 2), "world");
+
+  table.setCell(0, 1, "2.25");
+  table.setCell(0, 2, "Привет");
+  table.setCell(1, 0, "42");
+
+  const reparsed = new DbcTable(table.serialize(), schema);
+  assert.equal(reparsed.getCell(0, 1), "2.25");
+  assert.equal(reparsed.getCell(0, 2), "Привет");
+  assert.equal(reparsed.getCell(1, 0), "42");
+  assert.equal(reparsed.getCell(1, 2), "world");
+});
+
+test("adds, duplicates and deletes rows with unique generated IDs", () => {
+  const table = new DbcTable(makeFixture(), schema);
+  const added = table.appendRow();
+  assert.equal(added, 2);
+  assert.equal(table.getCell(added, 0), "3");
+  assert.equal(table.getCell(added, 2), "");
+
+  const duplicate = table.duplicateRow(0);
+  assert.equal(duplicate, 1);
+  assert.equal(table.getCell(duplicate, 0), "4");
+  assert.equal(table.getCell(duplicate, 2), "hello");
+
+  const removed = table.deleteRow(duplicate);
+  assert.equal(table.rows.length, 3);
+  table.insertRow(duplicate, removed);
+  assert.equal(table.getCell(duplicate, 0), "4");
+
+  const reparsed = new DbcTable(table.serialize(), schema);
+  assert.equal(reparsed.header.recordCount, 4);
+});
+
+test("validates integer ranges and duplicate IDs", () => {
+  const table = new DbcTable(makeFixture(), schema);
+  assert.throws(() => table.setCell(0, 0, "2"), /already used/);
+  assert.throws(() => table.setCell(0, 0, "2147483648"), /between/);
+  assert.throws(() => table.setCell(0, 1, "not-a-float"), /floating-point/);
+});
+
+function makeFixture(): Uint8Array {
+  const strings = Buffer.from("\0hello\0world\0", "utf8");
+  const bytes = Buffer.alloc(20 + 24 + strings.length);
+  bytes.write("WDBC", 0, "ascii");
+  bytes.writeUInt32LE(2, 4);
+  bytes.writeUInt32LE(3, 8);
+  bytes.writeUInt32LE(12, 12);
+  bytes.writeUInt32LE(strings.length, 16);
+  bytes.writeInt32LE(1, 20);
+  bytes.writeFloatLE(1.5, 24);
+  bytes.writeUInt32LE(1, 28);
+  bytes.writeInt32LE(2, 32);
+  bytes.writeFloatLE(-3.25, 36);
+  bytes.writeUInt32LE(7, 40);
+  strings.copy(bytes, 44);
+  return bytes;
+}
+