test: document NODE_COMMON_PORT env var

PR-URL: #27507 Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Rich Trott <[email protected]> Reviewed-By: Anto Aravinth <[email protected]> Reviewed-By: Yongsheng Zhang <[email protected]>
nodejs · May 4, 2019 · e1d88aa · e1d88aa
1 parent 22a5a05
commit e1d88aa
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diff --git a/test/common/README.md b/test/common/README.md
@@ -505,6 +505,11 @@ There is no difference between client or server side beyond their names.
 The behavior of the Node.js test suite can be altered using the following
 environment variables.
 
+### NODE_COMMON_PORT
+
+If set, `NODE_COMMON_PORT`'s value overrides the `common.PORT` default value of
+12346.
+
 ### NODE_SKIP_FLAG_CHECK
 
 If set, command line arguments passed to individual tests are not validated.