tests: Run tests with WARN_CREATE_GLOBAL

highlighters/main/test-data/commmand-parameter.zsh

@@ -27,7 +27,7 @@
 # vim: ft=zsh sw=2 ts=2 et
 # -------------------------------------------------------------------------------------------------
 
-x=/usr/bin/env
+local x=/usr/bin/env
 BUFFER='$x "argument"'
 
 expected_region_highlight=(

highlighters/main/test-data/path-dollared-word2.zsh

@@ -27,7 +27,7 @@
 # vim: ft=zsh sw=2 ts=2 et
 # -------------------------------------------------------------------------------------------------
 
-lambda="''"
+local lambda="''"
 touch \$lambda
 BUFFER=': \$lambda'
 

tests/README.md

@@ -21,6 +21,9 @@ point will not fail the test), and `$todo` is used as the explanation.
 **Note**: `$region_highlight` uses the same `"$i $j $style"` syntax but
 interprets the indexes differently.
 
+**Note**: Tests are run with `setopt NOUNSET WARN_CREATE_GLOBAL`, so any
+variables the test creates must be declared local.
+
 **Isolation**: Each test is run in a separate subshell, so any variables,
 aliases, functions, etc., it defines will be visible to the tested code (that
 computes `$region_highlight`), but will not affect subsequent tests.  The

tests/test-highlighting.zsh

@@ -29,7 +29,7 @@
 # -------------------------------------------------------------------------------------------------
 
 
-setopt NOUNSET
+setopt NO_UNSET WARN_CREATE_GLOBAL
 
 # Check an highlighter was given as argument.
 [[ -n "$1" ]] || {