1 files changed, 39 insertions, 0 deletions
diff --git a/shell/ash_test/ash-vars/param_expand_assign.tests b/shell/ash_test/ash-vars/param_expand_assign.tests
new file mode 100755
index 0000000..79de956
--- /dev/null
+++ b/shell/ash_test/ash-vars/param_expand_assign.tests
@@ -0,0 +1,39 @@
+# First try some invalid patterns. Do in subshell due to parsing error.
+# (set argv0 to "SHELL" to avoid "/path/to/shell: blah" in error messages)
+"$THIS_SH" -c 'echo ${=}' SHELL
+"$THIS_SH" -c 'echo ${:=}' SHELL
+
+# now some funky ones
+"$THIS_SH" -c 'echo ${#=}' SHELL
+"$THIS_SH" -c 'echo ${#:=}' SHELL
+
+# should error out
+"$THIS_SH" -c 'set --; echo _${1=}' SHELL
+"$THIS_SH" -c 'set --; echo _${1:=}' SHELL
+"$THIS_SH" -c 'set --; echo _${1=word}' SHELL
+"$THIS_SH" -c 'set --; echo _${1:=word}' SHELL
+
+# should not error
+"$THIS_SH" -c 'set aa; echo _${1=}' SHELL
+"$THIS_SH" -c 'set aa; echo _${1:=}' SHELL
+"$THIS_SH" -c 'set aa; echo _${1=word}' SHELL
+"$THIS_SH" -c 'set aa; echo _${1:=word}' SHELL
+
+# should work fine
+unset f; echo _$f
+unset f; echo _${f=}
+unset f; echo _${f:=}
+unset f; echo _${f=word}
+unset f; echo _${f:=word}
+
+f=; echo _$f
+f=; echo _${f=}
+f=; echo _${f:=}
+f=; echo _${f=word}
+f=; echo _${f:=word}
+
+f=fff; echo _$f
+f=fff; echo _${f=}
+f=fff; echo _${f:=}
+f=fff; echo _${f=word}
+f=fff; echo _${f:=word}