Small optimisations, by Brandon Black
[p5sagit/p5-mst-13.2.git] / t / op / negate.t
CommitLineData
8705167b 1#!./perl -w
2
3BEGIN {
4 chdir 't' if -d 't';
5 @INC = '../lib';
6 require './test.pl';
7}
8
9plan tests => 16;
10
11# Some of these will cause warnings if left on. Here we're checking the
12# functionality, not the warnings.
13no warnings "numeric";
14
15# test cases based on [perl #36675] -'-10' eq '+10'
16is(- 10, -10, "Simple numeric negation to negative");
17is(- -10, 10, "Simple numeric negation to positive");
18is(-"10", -10, "Negation of a positive string to negative");
19is(-"10.0", -10, "Negation of a positive decimal sting to negative");
20is(-"10foo", -10, "Negation of a numeric-lead string returns negation of numeric");
21is(-"-10", "+10", 'Negation of string starting with "-" returns a string starting with "+" - numeric');
22is(-"-10.0", "+10.0", 'Negation of string starting with "-" returns a string starting with "+" - decimal');
23is(-"-10foo", "+10foo", 'Negation of string starting with "-" returns a string starting with "+" - non-numeric');
24is(-"xyz", "-xyz", 'Negation of a negative string adds "-" to the front');
25is(-"-xyz", "+xyz", "Negation of a negative string to positive");
26is(-"+xyz", "-xyz", "Negation of a positive string to negative");
27is(-bareword, "-bareword", "Negation of bareword treated like a string");
28is(- -bareword, "+bareword", "Negation of -bareword returns string +bareword");
29is(-" -10", 10, "Negation of a whitespace-lead numeric string");
30is(-" -10.0", 10, "Negation of a whitespace-lead decimal string");
31is(-" -10foo", 10, "Negation of a whitespace-lead sting starting with a numeric")