13 sub j { join(":",@_) }
15 is( j(splice(@a,@a,0,11,12)), '', 'return value of splice when nothing is removed, only added');
16 is( j(@a), j(1..12), '... added two elements');
18 is( j(splice(@a,-1)), "12", 'remove last element, return value');
19 is( j(@a), j(1..11), '... removed last element');
21 is( j(splice(@a,0,1)), "1", 'remove first element, return value');
22 is( j(@a), j(2..11), '... first element removed');
24 is( j(splice(@a,0,0,0,1)), "", 'emulate shift, return value is empty');
25 is( j(@a), j(0..11), '... added two elements to beginning of the list');
27 is( j(splice(@a,5,1,5)), "5", 'remove and replace an element to the end of the list, return value is the element');
28 is( j(@a), j(0..11), '... list remains the same');
30 is( j(splice(@a, @a, 0, 12, 13)), "", 'push two elements onto the end of the list, return value is empty');
31 is( j(@a), j(0..13), '... added two elements to the end of the list');
33 is( j(splice(@a, -@a, @a, 1, 2, 3)), j(0..13), 'splice the whole list out, add 3 elements, return value is @a');
34 is( j(@a), j(1..3), '... array only contains new elements');
36 is( j(splice(@a, 1, -1, 7, 7)), "2", 'replace middle element with two elements, negative offset, return value is the element' );
37 is( j(@a), j(1,7,7,3), '... array 1,7,7,3');
39 is( j(splice(@a,-3,-2,2)), j(7), 'replace first 7 with a 2, negative offset, negative length, return value is 7');
40 is( j(@a), j(1,2,7,3), '... array has 1,2,7,3');
42 # Bug 20000223.001 - no test for splice(@array). Destructive test!
43 is( j(splice(@a)), j(1,2,7,3), 'bare splice empties the array, return value is the array');
44 is( j(@a), '', 'array is empty');
47 # [ID 20010711.005] in Tie::Array, SPLICE ignores context, breaking SHIFT
51 @a = ('red', 'green', 'blue');
52 $foo = splice @a, 1, 2;
53 is( $foo, 'blue', 'remove a single element in scalar context');
55 @a = ('red', 'green', 'blue');
57 is( $foo, 'red', 'do the same with shift');
59 # Bug [perl #30568] - insertions of deleted elements
61 splice( @a, 0, 3, $a[1], $a[0] );
62 is( j(@a), j(2,1), 'splice and replace with indexes 1, 0');
65 splice( @a, 0, 3 ,$a[0], $a[1] );
66 is( j(@a), j(1,2), 'splice and replace with indexes 0, 1');
69 splice( @a, 0, 3 ,$a[2], $a[1], $a[0] );
70 is( j(@a), j(3,2,1), 'splice and replace with indexes 2, 1, 0');
73 splice( @a, 0, 3, $a[0], $a[1], $a[2], $a[0], $a[1], $a[2] );
74 is( j(@a), j(1,2,3,1,2,3), 'splice and replace with a whole bunch');
77 splice( @a, 1, 2, $a[2], $a[1] );
78 is( j(@a), j(1,3,2), 'swap last two elements');
81 splice( @a, 1, 2, $a[1], $a[1] );
82 is( j(@a), j(1,2,2), 'duplicate middle element on the end');
84 # splice should invoke get magic
86 ok( ! Foo->isa('Bar'), 'Foo is not a Bar');
88 splice @Foo::ISA, 0, 0, 'Bar';
89 ok( Foo->isa('Bar'), 'splice @ISA and make Foo a Bar');
91 # Test undef first arg
92 eval { no warnings 'experimental';splice( $new_arrayref, 0, 0, 1, 2, 3 ) };
93 like($@, qr/Not an ARRAY/, 'undefined first argument to splice');
95 # Test arrays with nonexistent elements (crashes when it fails)
98 is sprintf("%s", splice @a, 0, 1), "",
99 'splice handles nonexistent elems when shrinking the array';
102 is sprintf("%s", splice @a, 0, 1, undef), "",
103 'splice handles nonexistent elems when array len stays the same';