Refactor expr_str() cases

 - Detect Symbol directly instead of as (not tuple) + (not choice)

 - Test explicitly for a tuple (non-Symbol) in NOT

 - Add some tests to get better coverage for NOT and parentheses

1 files changed, 1 insertions, 2 deletions

diff --git a/tests/Kstr b/tests/Kstr
index 0948b11..2498a74 100644
--- a/tests/Kstr
+++ b/tests/Kstr
@@ -30,8 +30,7 @@ config ADVANCED
     prompt "prompt 2"
 
 menuconfig ADVANCED
-    prompt "prompt 3"
-    depends on DEP2
+    prompt "prompt 3" if DEP2 && (DEP3 || !DEP4 || !(DEP5 && DEP6))
 
 if DEP3