process: add version constants and compare

PR-URL: https://github.com/nodejs/node/pull/19587
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>

1 files changed, 38 insertions, 1 deletions

diff --git a/test/parallel/test-process-release.js b/test/parallel/test-process-release.js
index 8b6bca9141..a7c8e8fa09 100644
--- a/test/parallel/test-process-release.js
+++ b/test/parallel/test-process-release.js
@@ -1,6 +1,6 @@
 'use strict';
 
-require('../common');
+const common = require('../common');
 
 const assert = require('assert');
 const versionParts = process.versions.node.split('.');
@@ -18,3 +18,40 @@ if (versionParts[0] === '4' && versionParts[1] >= 2) {
 } else {
   assert.strictEqual(process.release.lts, undefined);
 }
+
+const {
+  majorVersion: major,
+  minorVersion: minor,
+  patchVersion: patch,
+  prereleaseTag: tag,
+  compareVersion,
+} = process.release;
+
+assert.strictEqual(compareVersion(major, minor, patch, tag), 0);
+
+assert.strictEqual(compareVersion(major + 1, minor, patch, tag), -1);
+assert.strictEqual(compareVersion(major - 1, minor, patch, tag), 1);
+
+assert.strictEqual(compareVersion(major, minor + 1, patch, tag), -1);
+assert.strictEqual(compareVersion(major, minor - 1, patch, tag), 1);
+
+assert.strictEqual(compareVersion(major, minor, patch + 1, tag), -1);
+assert.strictEqual(compareVersion(major, minor, patch - 1, tag), 1);
+
+if (tag)
+  assert.strictEqual(compareVersion(major, minor, patch), 1);
+else
+  assert.strictEqual(compareVersion(major, minor, patch, 'notrealtag'), -1);
+
+for (const args of [
+  ['', 0, 0, ''],
+  [0, '', 0, ''],
+  [0, 0, '', ''],
+  [0, 0, 0, 0],
+]) {
+  common.expectsError(() => {
+    compareVersion(...args);
+  }, {
+    code: 'ERR_INVALID_ARG_TYPE',
+  });
+}