genltl: improve coverage

* tests/core/genltl.test: here
* spot/gen/formulas.cc: typo

spot/gen/formulas.cc

@@ -1011,7 +1011,7 @@ namespace spot
         int k = ceil(log2(n)) + (n == 1);
 
         if (n <= 0)
-          bad_number("kr1-exp", n);
+          bad_number("kr-nlogn", n);
 
         formula fa = formula::ap(a);
         formula fb = formula::ap(b);

tests/core/genltl.test

@@ -87,7 +87,6 @@ diff expected output
 genltl --dac=1..5 --eh=1..5 >output2
 diff output output2
 
-
 genltl --tv-f1=1:3 --tv-f2=1:3 --tv-g1=1:3 --tv-g2=1:3 --tv-uu=1:3 \
        --format=%F,%L,%f >output
 cat >expected <<EOF
@@ -175,3 +174,33 @@ genltl --ms-example=0..4 --ms-phi-r=0..2 --ms-phi-s=0..2 --ms-phi-h=0..4 \
        --gf-equiv=0..5 --gf-implies=0..5 --format=%F=%L,%f |
     ltldo -F-/2 'ltl2tgba -G -D' --stats='%<,%s' > out
 diff out exp
+
+# Test out-of-range conditions
+genltl --dac-patterns=0 2> err && exit 1
+test $? = 2
+test "`cat err`" = "genltl: no pattern dac-patterns=0, supported range is 1..55"
+
+genltl --eh-patterns=0 2> err && exit 1
+test $? = 2
+test "`cat err`" = "genltl: no pattern eh-patterns=0, supported range is 1..12"
+
+genltl --hkrss-patterns=0 2> err && exit 1
+test $? = 2
+test "`cat err`" = \
+  "genltl: no pattern hkrss-patterns=0, supported range is 1..55"
+
+genltl --kr-n=0 2> err && exit 1
+test $? = 2
+test "`cat err`" = "genltl: no pattern kr-n=0, supported range is 1.."
+
+genltl --kr-nlogn=0 2> err && exit 1
+test $? = 2
+test "`cat err`" = "genltl: no pattern kr-nlogn=0, supported range is 1.."
+
+genltl --p-patterns=0 2> err && exit 1
+test $? = 2
+test "`cat err`" = "genltl: no pattern p-patterns=0, supported range is 1..20"
+
+genltl --sb-patterns=0 2> err && exit 1
+test $? = 2
+test "`cat err`" = "genltl: no pattern sb-patterns=0, supported range is 1..27"