%expext was not functioning at all.

[bison.git] / tests / regression.at

diff --git a/tests/regression.at b/tests/regression.at
index f37f2c085bafb5a9187778aa200b0fd782021b1f..da2ab065ccfda7b303058545546f380eb9bad1b6 100644 (file)
--- a/tests/regression.at
+++ b/tests/regression.at
@@ -43,6 +43,284 @@ AT_CHECK([bison -v duplicate.y -o duplicate.c], 0, ignore, ignore)
 AT_CLEANUP([duplicate.*])
 
 
+## ------------------------- ##
+## Unresolved SR Conflicts.  ##
+## ------------------------- ##
+
+AT_SETUP([Unresolved SR Conflicts])
+
+AT_DATA([input.y],
+[[%token NUM OP
+%%
+exp: exp OP exp | NUM;
+]])
+
+AT_CHECK([bison input.y -o input.c -v], 0, [],
+[input.y contains 1 shift/reduce conflict.
+])
+
+# Check the contents of the report.
+AT_CHECK([cat input.output], [],
+[[State 4 contains 1 shift/reduce conflict.
+
+Grammar
+
+rule 1    exp -> exp OP exp
+rule 2    exp -> NUM
+
+Terminals, with rules where they appear
+
+$ (-1)
+error (256)
+NUM (257) 2
+OP (258) 1
+
+Nonterminals, with rules where they appear
+
+exp (5)
+    on left: 1 2, on right: 1
+
+
+state 0
+
+    NUM        shift, and go to state 1
+
+    exp        go to state 2
+
+
+
+state 1
+
+    exp  ->  NUM .   (rule 2)
+
+    $default   reduce using rule 2 (exp)
+
+
+
+state 2
+
+    exp  ->  exp . OP exp   (rule 1)
+
+    $          go to state 5
+    OP         shift, and go to state 3
+
+
+
+state 3
+
+    exp  ->  exp OP . exp   (rule 1)
+
+    NUM        shift, and go to state 1
+
+    exp        go to state 4
+
+
+
+state 4
+
+    exp  ->  exp . OP exp   (rule 1)
+    exp  ->  exp OP exp .   (rule 1)
+
+    OP         shift, and go to state 3
+
+    OP         [reduce using rule 1 (exp)]
+    $default   reduce using rule 1 (exp)
+
+
+
+state 5
+
+    $          go to state 6
+
+
+
+state 6
+
+    $default   accept
+]])
+
+AT_CLEANUP(input.c input.output)
+
+
+## --------------------- ##
+## Solved SR Conflicts.  ##
+## --------------------- ##
+
+AT_SETUP([Solved SR Conflicts])
+
+AT_DATA([input.y],
+[[%token NUM OP
+%right OP
+%%
+exp: exp OP exp | NUM;
+]])
+
+AT_CHECK([bison input.y -o input.c -v], 0, [], [])
+
+# Check the contents of the report.
+AT_CHECK([cat input.output], [],
+[[Conflict in state 4 between rule 1 and token OP resolved as shift.
+
+Grammar
+
+rule 1    exp -> exp OP exp
+rule 2    exp -> NUM
+
+Terminals, with rules where they appear
+
+$ (-1)
+error (256)
+NUM (257) 2
+OP (258) 1
+
+Nonterminals, with rules where they appear
+
+exp (5)
+    on left: 1 2, on right: 1
+
+
+state 0
+
+    NUM        shift, and go to state 1
+
+    exp        go to state 2
+
+
+
+state 1
+
+    exp  ->  NUM .   (rule 2)
+
+    $default   reduce using rule 2 (exp)
+
+
+
+state 2
+
+    exp  ->  exp . OP exp   (rule 1)
+
+    $          go to state 5
+    OP         shift, and go to state 3
+
+
+
+state 3
+
+    exp  ->  exp OP . exp   (rule 1)
+
+    NUM        shift, and go to state 1
+
+    exp        go to state 4
+
+
+
+state 4
+
+    exp  ->  exp . OP exp   (rule 1)
+    exp  ->  exp OP exp .   (rule 1)
+
+    OP         shift, and go to state 3
+
+    $default   reduce using rule 1 (exp)
+
+
+
+state 5
+
+    $          go to state 6
+
+
+
+state 6
+
+    $default   accept
+]])
+
+AT_CLEANUP(input.c input.output)
+
+
+
+## -------------------- ##
+## %expect not enough.  ##
+## -------------------- ##
+
+AT_SETUP([%expect not enough])
+
+AT_DATA([input.y],
+[[%token NUM OP
+%expect 0
+%%
+exp: exp OP exp | NUM;
+]])
+
+AT_CHECK([bison input.y -o input.c], 1, [],
+[input.y contains 1 shift/reduce conflict.
+expected 0 shift/reduce conflicts
+])
+AT_CLEANUP(input.c)
+
+
+## --------------- ##
+## %expect right.  ##
+## --------------- ##
+
+AT_SETUP([%expect right])
+
+AT_DATA([input.y],
+[[%token NUM OP
+%expect 1
+%%
+exp: exp OP exp | NUM;
+]])
+
+AT_CHECK([bison input.y -o input.c], 0, [],
+[input.y contains 1 shift/reduce conflict.
+])
+AT_CLEANUP(input.c)
+
+
+## ------------------ ##
+## %expect too much.  ##
+## ------------------ ##
+
+AT_SETUP([%expect too much])
+
+AT_DATA([input.y],
+[[%token NUM OP
+%expect 2
+%%
+exp: exp OP exp | NUM;
+]])
+
+AT_CHECK([bison input.y -o input.c], 1, [],
+[input.y contains 1 shift/reduce conflict.
+expected 2 shift/reduce conflicts
+])
+AT_CLEANUP(input.c)
+
+
+## ---------------------- ##
+## Mixing %token styles.  ##
+## ---------------------- ##
+
+
+AT_SETUP([Mixing %token styles])
+
+# Taken from the documentation.
+AT_DATA([input.y],
+[[%token  <operator>  OR      "||"
+%token  <operator>  LE 134  "<="
+%left  OR  "<="
+%%
+exp: ;
+%%
+]])
+
+AT_CHECK([bison -v input.y -o input.c], 0, ignore, ignore)
+
+AT_CLEANUP([input.*])
+
+
 
 ## ---------------------- ##
 ## %union and --defines.  ##
@@ -89,26 +367,6 @@ AT_CHECK([fgrep '//*' union-comment.tab.c], [1], [])
 AT_CLEANUP([union-comment.*])
 
 
-## --------------- ##
-## invalid input.  ##
-## --------------- ##
-
-
-AT_SETUP([Invalid input])
-
-AT_DATA([input.y],
-[[%%
-?
-]])
-
-AT_CHECK([bison input.y], [1], [],
-[input.y:2: invalid input: `?'
-input.y:3: fatal error: no rules in the input grammar
-])
-
-AT_CLEANUP
-
-
 ## ----------------- ##
 ## Invalid input 1.  ##
 ## ----------------- ##
@@ -174,7 +432,7 @@ AT_CHECK([bison --defines=$1.h $1.y])
 # CPP should be happy with it.
 AT_CHECK([$CC -E $1.h], 0, [ignore])
 
-AT_CLEANUP($1.y)
+AT_CLEANUP($1.*)
 ])
 
 AT_TEST_CPP_GUARD_H([input/input])