1 2print "1..125\n"; 3 4#P = start of string Q = start of substr R = end of substr S = end of string 5 6BEGIN { 7 unshift @INC, '../lib' if -d '../lib' ; 8} 9use warnings ; 10 11$a = 'abcdefxyz'; 12$SIG{__WARN__} = sub { 13 if ($_[0] =~ /^substr outside of string/) { 14 $w++; 15 } elsif ($_[0] =~ /^Attempt to use reference as lvalue in substr/) { 16 $w += 2; 17 } elsif ($_[0] =~ /^Use of uninitialized value/) { 18 $w += 3; 19 } else { 20 warn $_[0]; 21 } 22}; 23 24sub ok { print (($_[1] ? "" : "not ") . "ok $_[0]\n") } 25 26$FATAL_MSG = '^substr outside of string' ; 27 28ok 1, substr($a,0,3) eq 'abc'; # P=Q R S 29ok 2, substr($a,3,3) eq 'def'; # P Q R S 30ok 3, substr($a,6,999) eq 'xyz'; # P Q S R 31$b = substr($a,999,999) ; # warn # P R Q S 32ok 4, $w-- == 1 ; 33eval{substr($a,999,999) = "" ; };# P R Q S 34ok 5, $@ =~ /$FATAL_MSG/; 35ok 6, substr($a,0,-6) eq 'abc'; # P=Q R S 36ok 7, substr($a,-3,1) eq 'x'; # P Q R S 37 38$[ = 1; 39 40ok 8, substr($a,1,3) eq 'abc' ; # P=Q R S 41ok 9, substr($a,4,3) eq 'def' ; # P Q R S 42ok 10, substr($a,7,999) eq 'xyz';# P Q S R 43$b = substr($a,999,999) ; # warn # P R Q S 44ok 11, $w-- == 1 ; 45eval{substr($a,999,999) = "" ; } ; # P R Q S 46ok 12, $@ =~ /$FATAL_MSG/; 47ok 13, substr($a,1,-6) eq 'abc' ;# P=Q R S 48ok 14, substr($a,-3,1) eq 'x' ; # P Q R S 49 50$[ = 0; 51 52substr($a,3,3) = 'XYZ'; 53ok 15, $a eq 'abcXYZxyz' ; 54substr($a,0,2) = ''; 55ok 16, $a eq 'cXYZxyz' ; 56substr($a,0,0) = 'ab'; 57ok 17, $a eq 'abcXYZxyz' ; 58substr($a,0,0) = '12345678'; 59ok 18, $a eq '12345678abcXYZxyz' ; 60substr($a,-3,3) = 'def'; 61ok 19, $a eq '12345678abcXYZdef'; 62substr($a,-3,3) = '<'; 63ok 20, $a eq '12345678abcXYZ<' ; 64substr($a,-1,1) = '12345678'; 65ok 21, $a eq '12345678abcXYZ12345678' ; 66 67$a = 'abcdefxyz'; 68 69ok 22, substr($a,6) eq 'xyz' ; # P Q R=S 70ok 23, substr($a,-3) eq 'xyz' ; # P Q R=S 71$b = substr($a,999,999) ; # warning # P R=S Q 72ok 24, $w-- == 1 ; 73eval{substr($a,999,999) = "" ; } ; # P R=S Q 74ok 25, $@ =~ /$FATAL_MSG/; 75ok 26, substr($a,0) eq 'abcdefxyz' ; # P=Q R=S 76ok 27, substr($a,9) eq '' ; # P Q=R=S 77ok 28, substr($a,-11) eq 'abcdefxyz'; # Q P R=S 78ok 29, substr($a,-9) eq 'abcdefxyz'; # P=Q R=S 79 80$a = '54321'; 81 82$b = substr($a,-7, 1) ; # warn # Q R P S 83ok 30, $w-- == 1 ; 84eval{substr($a,-7, 1) = "" ; }; # Q R P S 85ok 31, $@ =~ /$FATAL_MSG/; 86$b = substr($a,-7,-6) ; # warn # Q R P S 87ok 32, $w-- == 1 ; 88eval{substr($a,-7,-6) = "" ; }; # Q R P S 89ok 33, $@ =~ /$FATAL_MSG/; 90ok 34, substr($a,-5,-7) eq ''; # R P=Q S 91ok 35, substr($a, 2,-7) eq ''; # R P Q S 92ok 36, substr($a,-3,-7) eq ''; # R P Q S 93ok 37, substr($a, 2,-5) eq ''; # P=R Q S 94ok 38, substr($a,-3,-5) eq ''; # P=R Q S 95ok 39, substr($a, 2,-4) eq ''; # P R Q S 96ok 40, substr($a,-3,-4) eq ''; # P R Q S 97ok 41, substr($a, 5,-6) eq ''; # R P Q=S 98ok 42, substr($a, 5,-5) eq ''; # P=R Q S 99ok 43, substr($a, 5,-3) eq ''; # P R Q=S 100$b = substr($a, 7,-7) ; # warn # R P S Q 101ok 44, $w-- == 1 ; 102eval{substr($a, 7,-7) = "" ; }; # R P S Q 103ok 45, $@ =~ /$FATAL_MSG/; 104$b = substr($a, 7,-5) ; # warn # P=R S Q 105ok 46, $w-- == 1 ; 106eval{substr($a, 7,-5) = "" ; }; # P=R S Q 107ok 47, $@ =~ /$FATAL_MSG/; 108$b = substr($a, 7,-3) ; # warn # P Q S Q 109ok 48, $w-- == 1 ; 110eval{substr($a, 7,-3) = "" ; }; # P Q S Q 111ok 49, $@ =~ /$FATAL_MSG/; 112$b = substr($a, 7, 0) ; # warn # P S Q=R 113ok 50, $w-- == 1 ; 114eval{substr($a, 7, 0) = "" ; }; # P S Q=R 115ok 51, $@ =~ /$FATAL_MSG/; 116 117ok 52, substr($a,-7,2) eq ''; # Q P=R S 118ok 53, substr($a,-7,4) eq '54'; # Q P R S 119ok 54, substr($a,-7,7) eq '54321';# Q P R=S 120ok 55, substr($a,-7,9) eq '54321';# Q P S R 121ok 56, substr($a,-5,0) eq ''; # P=Q=R S 122ok 57, substr($a,-5,3) eq '543';# P=Q R S 123ok 58, substr($a,-5,5) eq '54321';# P=Q R=S 124ok 59, substr($a,-5,7) eq '54321';# P=Q S R 125ok 60, substr($a,-3,0) eq ''; # P Q=R S 126ok 61, substr($a,-3,3) eq '321';# P Q R=S 127ok 62, substr($a,-2,3) eq '21'; # P Q S R 128ok 63, substr($a,0,-5) eq ''; # P=Q=R S 129ok 64, substr($a,2,-3) eq ''; # P Q=R S 130ok 65, substr($a,0,0) eq ''; # P=Q=R S 131ok 66, substr($a,0,5) eq '54321';# P=Q R=S 132ok 67, substr($a,0,7) eq '54321';# P=Q S R 133ok 68, substr($a,2,0) eq ''; # P Q=R S 134ok 69, substr($a,2,3) eq '321'; # P Q R=S 135ok 70, substr($a,5,0) eq ''; # P Q=R=S 136ok 71, substr($a,5,2) eq ''; # P Q=S R 137ok 72, substr($a,-7,-5) eq ''; # Q P=R S 138ok 73, substr($a,-7,-2) eq '543';# Q P R S 139ok 74, substr($a,-5,-5) eq ''; # P=Q=R S 140ok 75, substr($a,-5,-2) eq '543';# P=Q R S 141ok 76, substr($a,-3,-3) eq ''; # P Q=R S 142ok 77, substr($a,-3,-1) eq '32';# P Q R S 143 144$a = ''; 145 146ok 78, substr($a,-2,2) eq ''; # Q P=R=S 147ok 79, substr($a,0,0) eq ''; # P=Q=R=S 148ok 80, substr($a,0,1) eq ''; # P=Q=S R 149ok 81, substr($a,-2,3) eq ''; # Q P=S R 150ok 82, substr($a,-2) eq ''; # Q P=R=S 151ok 83, substr($a,0) eq ''; # P=Q=R=S 152 153 154ok 84, substr($a,0,-1) eq ''; # R P=Q=S 155$b = substr($a,-2, 0) ; # warn # Q=R P=S 156ok 85, $w-- == 1 ; 157eval{substr($a,-2, 0) = "" ; }; # Q=R P=S 158ok 86, $@ =~ /$FATAL_MSG/; 159 160$b = substr($a,-2, 1) ; # warn # Q R P=S 161ok 87, $w-- == 1 ; 162eval{substr($a,-2, 1) = "" ; }; # Q R P=S 163ok 88, $@ =~ /$FATAL_MSG/; 164 165$b = substr($a,-2,-1) ; # warn # Q R P=S 166ok 89, $w-- == 1 ; 167eval{substr($a,-2,-1) = "" ; }; # Q R P=S 168ok 90, $@ =~ /$FATAL_MSG/; 169 170$b = substr($a,-2,-2) ; # warn # Q=R P=S 171ok 91, $w-- == 1 ; 172eval{substr($a,-2,-2) = "" ; }; # Q=R P=S 173ok 92, $@ =~ /$FATAL_MSG/; 174 175$b = substr($a, 1,-2) ; # warn # R P=S Q 176ok 93, $w-- == 1 ; 177eval{substr($a, 1,-2) = "" ; }; # R P=S Q 178ok 94, $@ =~ /$FATAL_MSG/; 179 180$b = substr($a, 1, 1) ; # warn # P=S Q R 181ok 95, $w-- == 1 ; 182eval{substr($a, 1, 1) = "" ; }; # P=S Q R 183ok 96, $@ =~ /$FATAL_MSG/; 184 185$b = substr($a, 1, 0) ;# warn # P=S Q=R 186ok 97, $w-- == 1 ; 187eval{substr($a, 1, 0) = "" ; }; # P=S Q=R 188ok 98, $@ =~ /$FATAL_MSG/; 189 190$b = substr($a,1) ; # warning # P=R=S Q 191ok 99, $w-- == 1 ; 192eval{substr($a,1) = "" ; }; # P=R=S Q 193ok 100, $@ =~ /$FATAL_MSG/; 194 195my $a = 'zxcvbnm'; 196substr($a,2,0) = ''; 197ok 101, $a eq 'zxcvbnm'; 198substr($a,7,0) = ''; 199ok 102, $a eq 'zxcvbnm'; 200substr($a,5,0) = ''; 201ok 103, $a eq 'zxcvbnm'; 202substr($a,0,2) = 'pq'; 203ok 104, $a eq 'pqcvbnm'; 204substr($a,2,0) = 'r'; 205ok 105, $a eq 'pqrcvbnm'; 206substr($a,8,0) = 'asd'; 207ok 106, $a eq 'pqrcvbnmasd'; 208substr($a,0,2) = 'iop'; 209ok 107, $a eq 'ioprcvbnmasd'; 210substr($a,0,5) = 'fgh'; 211ok 108, $a eq 'fghvbnmasd'; 212substr($a,3,5) = 'jkl'; 213ok 109, $a eq 'fghjklsd'; 214substr($a,3,2) = '1234'; 215ok 110, $a eq 'fgh1234lsd'; 216 217 218# with lexicals (and in re-entered scopes) 219for (0,1) { 220 my $txt; 221 unless ($_) { 222 $txt = "Foo"; 223 substr($txt, -1) = "X"; 224 ok 111, $txt eq "FoX"; 225 } 226 else { 227 substr($txt, 0, 1) = "X"; 228 ok 112, $txt eq "X"; 229 } 230} 231 232$w = 0 ; 233# coercion of references 234{ 235 my $s = []; 236 substr($s, 0, 1) = 'Foo'; 237 ok 113, substr($s,0,7) eq "FooRRAY" && !($w-=2); 238} 239 240# check no spurious warnings 241ok 114, $w == 0; 242 243# check new 4 arg replacement syntax 244$a = "abcxyz"; 245$w = 0; 246ok 115, substr($a, 0, 3, "") eq "abc" && $a eq "xyz"; 247ok 116, substr($a, 0, 0, "abc") eq "" && $a eq "abcxyz"; 248ok 117, substr($a, 3, -1, "") eq "xy" && $a eq "abcz"; 249 250ok 118, substr($a, 3, undef, "xy") eq "" && $a eq "abcxyz" 251 && $w == 3; 252 253$w = 0; 254 255ok 119, substr($a, 3, 9999999, "") eq "xyz" && $a eq "abc"; 256eval{substr($a, -99, 0, "") }; 257ok 120, $@ =~ /$FATAL_MSG/; 258eval{substr($a, 99, 3, "") }; 259ok 121, $@ =~ /$FATAL_MSG/; 260 261substr($a, 0, length($a), "foo"); 262ok 122, $a eq "foo" && !$w; 263 264# using 4 arg substr as lvalue is a compile time error 265eval 'substr($a,0,0,"") = "abc"'; 266ok 123, $@ && $@ =~ /Can't modify substr/ && $a eq "foo"; 267 268$a = "abcdefgh"; 269ok 124, sub { shift }->(substr($a, 0, 4, "xxxx")) eq 'abcd'; 270ok 125, $a eq 'xxxxefgh'; 271