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-rw-r--r--tests/env.test14
1 files changed, 14 insertions, 0 deletions
diff --git a/tests/env.test b/tests/env.test
index ee13b7f..a7aa162 100644
--- a/tests/env.test
+++ b/tests/env.test
@@ -252,6 +252,20 @@ test env-6.1 {corner cases - add lots of env variables} {} {
expr {[array size env] - $size}
} 100
+test env-7.3 {[9b4702]: testing existence of env(some_thing) should not destroy trace} -body {
+ catch {unset ::env(test7_3)}
+ proc foo args {
+ set ::env(test7_3) ok
+ }
+ trace add variable ::env(not_yet_existent) write foo
+ info exists ::env(not_yet_existent)
+ set ::env(not_yet_existent) "Now I'm here";
+ info exists ::env(test7_3)
+} -cleanup {
+ unset ::env(not_yet_existent)
+ unset ::env(test7_3)
+} -result 1
+
# Restore the environment variables at the end of the test.
foreach name [array names env] {