Squashed 'third_party/pi/' content from commit d981de122

git-subtree-dir: third_party/pi
git-subtree-split: d981de1229ef899957bbe968bc8dcda02a21f477

scripts/publish-release-announcement.test.mjs

@@ -0,0 +1,62 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import { advanceLatestRelease, compareReleaseVersions } from "./publish-release-announcement.mjs";
+
+test("compares stable release versions numerically", () => {
+	assert.ok(compareReleaseVersions("0.85.0", "0.84.9") > 0);
+	assert.ok(compareReleaseVersions("0.84.10", "0.84.9") > 0);
+	assert.equal(compareReleaseVersions("0.84.0", "0.84.0"), 0);
+	assert.throws(() => compareReleaseVersions("0.85.0-beta.1", "0.84.0"));
+});
+
+test("does not regress an existing newer release marker", async () => {
+	let writeCount = 0;
+	const result = await advanceLatestRelease(
+		"0.84.0",
+		async () => ({ etag: '"newer"', version: "0.85.0" }),
+		async () => {
+			writeCount++;
+			return true;
+		},
+	);
+
+	assert.deepEqual(result, { advanced: false, version: "0.85.0" });
+	assert.equal(writeCount, 0);
+});
+
+test("retries a lost conditional update and preserves a racing newer marker", async () => {
+	let readCount = 0;
+	let writeCount = 0;
+	const result = await advanceLatestRelease(
+		"0.84.0",
+		async () => {
+			readCount++;
+			return readCount === 1
+				? { etag: '"previous"', version: "0.83.0" }
+				: { etag: '"newer"', version: "0.85.0" };
+		},
+		async (condition) => {
+			writeCount++;
+			assert.deepEqual(condition, { etag: '"previous"' });
+			return false;
+		},
+	);
+
+	assert.deepEqual(result, { advanced: false, version: "0.85.0" });
+	assert.equal(writeCount, 1);
+});
+
+test("creates a missing marker with an if-none-match condition", async () => {
+	let condition;
+	const result = await advanceLatestRelease(
+		"0.84.0",
+		async () => undefined,
+		async (value) => {
+			condition = value;
+			return true;
+		},
+	);
+
+	assert.deepEqual(result, { advanced: true, version: "0.84.0" });
+	assert.deepEqual(condition, { missing: true });
+});