From bfcce169d893957c7fdbb7ee73a756633e3612e6 Mon Sep 17 00:00:00 2001
From: Andrew Binstock <920630+platypusguy@users.noreply.github.com>
Date: Thu, 31 Oct 2024 23:10:55 -0700
Subject: [PATCH] JACOBIN-592 Captured redirecting stderr in tests for easy
 future reference. (We already use this widely in our tests; just placing it
 here for easy copy/paste.)

---
 notes/StderrInTests.txt | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 notes/StderrInTests.txt

diff --git a/notes/StderrInTests.txt b/notes/StderrInTests.txt
new file mode 100644
index 00000000..8feab9cd
--- /dev/null
+++ b/notes/StderrInTests.txt
@@ -0,0 +1,22 @@
+This code will trap output to stderr for later examination. It's
+used extensively in unit tests
+
+
+	globals.InitGlobals("test")
+
+	normalStderr := os.Stderr
+	r, w, _ := os.Pipe()
+	os.Stderr = w
+
+
+    // run test here
+
+
+
+	_ = w.Close()
+	msg, _ := io.ReadAll(r)
+	os.Stderr = normalStderr
+
+	errMsg := string(msg)
+
+	// test content of errMsg