test(toml): Test with the official toml-test suite

Author: 4513ECHO

.github/typos.toml

@@ -17,6 +17,7 @@ extend-exclude = [
   "http/testdata",
   "http/user_agent.ts",
   "jsonc/testdata",
+  "toml/testdata",
   "ulid/*.ts",
   "crypto/_wasm"
 ]

deno.json

@@ -36,6 +36,7 @@
   "exclude": [
     ".git",
     "jsonc/testdata",
+    "toml/testdata",
     "_tools/node_test_runner"
   ],
   "lint": {

toml/_test_util.ts

@@ -0,0 +1,54 @@
+// Copyright 2018-2025 the Deno authors. MIT license.
+
+type TestCaseValue = {
+  type:
+    | "string"
+    | "integer"
+    | "float"
+    | "bool"
+    | "datetime"
+    | "datetime-local"
+    | "date-local"
+    | "time-local";
+  value: string;
+};
+export type TestCase =
+  | TestCaseValue
+  | TestCase[]
+  | { [key: string]: TestCase };
+
+function isTestCaseValue(v: unknown): v is TestCaseValue {
+  return typeof v === "object" && v !== null &&
+    "type" in v && typeof v.type === "string" &&
+    "value" in v && typeof v.value === "string";
+}
+
+export function convertTestCase(v: TestCase): unknown {
+  if (isTestCaseValue(v)) {
+    switch (v.type) {
+      case "string":
+        return v.value;
+      case "integer":
+        return parseInt(v.value, 10);
+      case "float":
+        return parseFloat(v.value.replace("inf", "Infinity"));
+      case "bool":
+        return v.value === "true";
+      // TODO: https://github.com/denoland/std/issues/6591
+      case "datetime":
+      case "datetime-local":
+      case "date-local":
+        return new Date(v.value);
+      case "time-local":
+        return v.value;
+    }
+  } else if (Array.isArray(v)) {
+    return v.map(convertTestCase);
+  } else {
+    const obj: Record<string, unknown> = {};
+    for (const [key, value] of Object.entries(v)) {
+      obj[key] = convertTestCase(value);
+    }
+    return obj;
+  }
+}

toml/official_parse_test.ts

@@ -0,0 +1,52 @@
+// Copyright 2018-2025 the Deno authors. MIT license.
+
+import { assertEquals, assertThrows } from "../assert/mod.ts";
+import { convertTestCase, type TestCase } from "./_test_util.ts";
+import { parse } from "./parse.ts";
+
+const testCases = await Deno.readTextFile(
+  new URL("./testdata/files-toml-1.0.0", import.meta.url),
+);
+
+const ignored = [
+  "valid/integer/long",
+];
+
+for (
+  const testCase of testCases.split("\n")
+    .filter((line) => line.endsWith(".toml"))
+    .map((line) => line.slice(0, -5))
+) {
+  const input = await Deno.readTextFile(
+    new URL(`./testdata/${testCase}.toml`, import.meta.url),
+  );
+
+  if (testCase.startsWith("invalid/")) {
+    Deno.test({
+      name: `[toml] parse ${testCase}`,
+      ignore: ignored.some((v) => testCase.startsWith(v)),
+      fn() {
+        assertThrows(() => parse(input), `TOML input:\n${input}`);
+      },
+    });
+  } else {
+    const json: Record<string, TestCase> = JSON.parse(
+      await Deno.readTextFile(
+        new URL(`./testdata/${testCase}.json`, import.meta.url),
+      ),
+    );
+    const expected: Record<string, unknown> = {};
+    for (const [key, value] of Object.entries(json)) {
+      expected[key] = convertTestCase(value);
+    }
+
+    Deno.test({
+      name: `[toml] parse ${testCase}`,
+      ignore: ignored.some((v) => testCase.startsWith(v)),
+      fn() {
+        const parsed = parse(input);
+        assertEquals(parsed, expected);
+      },
+    });
+  }
+}

toml/testdata/.gitattributes

@@ -0,0 +1 @@
+*.toml  -text

toml/testdata/README.md

@@ -0,0 +1,31 @@
+This directory contains the test cases copied from the official
+[toml-lang/toml-test](https://github.com/toml-lang/toml-test) repository at
+[`1d35870ef6783d86366ba55d7df703f3f60b3b55`](https://github.com/toml-lang/toml-test/tree/1d35870ef6783d86366ba55d7df703f3f60b3b55).
+
+The license of the copied data is as follows.
+
+https://github.com/toml-lang/toml-test/blob/1d35870ef6783d86366ba55d7df703f3f60b3b55/LICENSE
+
+```
+The MIT License (MIT)
+
+Copyright (c) 2018 TOML authors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+```