X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/6b98e4b5636203b60c2a43ddaa988562616b4c69..88bce5a2ef15e5b508749e75ddad709aca85b019:/tests/reduce.at

diff --git a/tests/reduce.at b/tests/reduce.at
index ba9d27ed..4c8da723 100644
--- a/tests/reduce.at
+++ b/tests/reduce.at
@@ -124,6 +124,8 @@ AT_CLEANUP
 
 AT_SETUP([Useless Rules])
 
+AT_KEYWORDS([report])
+
 AT_DATA([[input.y]],
 [[%verbose
 %output="input.c"
@@ -184,16 +186,16 @@ Terminals which are not used:
    '7'
    '8'
    '9'
-Useless rules:
-#2     useless1: '1';
-#3     useless2: '2';
-#4     useless3: '3';
-#5     useless4: '4';
-#6     useless5: '5';
-#7     useless6: '6';
-#8     useless7: '7';
-#9     useless8: '8';
-#10    useless9: '9';
+Useless rules
+    2 useless1: '1'
+    3 useless2: '2'
+    4 useless3: '3'
+    5 useless4: '4'
+    6 useless5: '5'
+    7 useless6: '6'
+    8 useless7: '7'
+    9 useless8: '8'
+   10 useless9: '9'
 ]])
 
 AT_CLEANUP
@@ -209,6 +211,8 @@ AT_CLEANUP
 
 AT_SETUP([Reduced Automaton])
 
+AT_KEYWORDS([report])
+
 # The non reduced grammar.
 # ------------------------
 AT_DATA([[not-reduced.y]],
@@ -249,10 +253,10 @@ AT_CHECK([[sed -n '/^Grammar/q;/^$/!p' not-reduced.output]], 0,
    non_productive
 Terminals which are not used:
    useless_token
-Useless rules:
-#2     exp: non_productive;
-#3     not_reachable: useful;
-#4     non_productive: non_productive useless_token;
+Useless rules
+    2 exp: non_productive
+    3 not_reachable: useful
+    4 non_productive: non_productive useless_token
 ]])
 
 # The reduced grammar.
@@ -296,6 +300,8 @@ AT_CLEANUP
 
 AT_SETUP([Underivable Rules])
 
+AT_KEYWORDS([report])
+
 AT_DATA([[input.y]],
 [[%verbose
 %output="input.c"
@@ -319,10 +325,31 @@ AT_CHECK([[sed -n '/^Grammar/q;/^$/!p' input.output]], 0,
 [[Useless nonterminals:
    underivable
    indirection
-Useless rules:
-#2     exp: underivable;
-#3     underivable: indirection;
-#4     indirection: underivable;
+Useless rules
+    2 exp: underivable
+    3 underivable: indirection
+    4 indirection: underivable
+]])
+
+AT_CLEANUP
+
+
+
+## ---------------- ##
+## Empty Language.  ##
+## ---------------- ##
+
+AT_SETUP([Empty Language])
+
+AT_DATA([[input.y]],
+[[%output="input.c"
+%%
+exp: exp;
+]])
+
+AT_CHECK([[bison input.y]], 1, [],
+[[input.y: warning: 2 useless nonterminals and 2 useless rules
+input.y:3.1-3: fatal error: start symbol exp does not derive any sentence
 ]])
 
 AT_CLEANUP