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node_modules/process-warning/test/no-warnings.test.js

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+'use strict'
+
+const { test } = require('node:test')
+const { spawnSync } = require('node:child_process')
+const { resolve } = require('node:path')
+
+const entry = resolve(__dirname, '../examples', 'example.js')
+
+test('--no-warnings is set in cli', t => {
+  t.plan(1)
+  const child = spawnSync(process.execPath, [
+    '--no-warnings',
+    entry
+  ])
+
+  const stderr = child.stderr.toString()
+  t.assert.deepStrictEqual(stderr, '')
+})
+
+test('--no-warnings is not set in cli', t => {
+  t.plan(1)
+  const child = spawnSync(process.execPath, [
+    entry
+  ])
+
+  const stderr = child.stderr.toString()
+  t.assert.match(stderr, /\[CUSTDEP001\] DeprecationWarning: This is a deprecation warning/)
+})
+
+test('NODE_NO_WARNINGS is set to 1', t => {
+  t.plan(1)
+  const child = spawnSync(process.execPath, [
+    entry
+  ], {
+    env: {
+      NODE_NO_WARNINGS: '1'
+    }
+  })
+
+  const stderr = child.stderr.toString()
+  t.assert.deepStrictEqual(stderr, '')
+})
+
+test('NODE_NO_WARNINGS is set to 0', t => {
+  t.plan(1)
+  const child = spawnSync(process.execPath, [
+    entry
+  ], {
+    env: {
+      NODE_NO_WARNINGS: '0'
+    }
+  })
+
+  const stderr = child.stderr.toString()
+  t.assert.match(stderr, /\[CUSTDEP001\] DeprecationWarning: This is a deprecation warning/)
+})
+
+test('NODE_NO_WARNINGS is not set', t => {
+  t.plan(1)
+  const child = spawnSync(process.execPath, [
+    entry
+  ])
+
+  const stderr = child.stderr.toString()
+  t.assert.match(stderr, /\[CUSTDEP001\] DeprecationWarning: This is a deprecation warning/)
+})
+
+test('NODE_Options contains --no-warnings', t => {
+  t.plan(1)
+  const child = spawnSync(process.execPath, [
+    entry
+  ], {
+    env: {
+      NODE_OPTIONS: '--no-warnings'
+    }
+  })
+
+  const stderr = child.stderr.toString()
+  t.assert.deepStrictEqual(stderr, '')
+})