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string: fix bug and add tests for string.count

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This commit is contained in:
Alvydas Vitkauskas 2019-08-03 23:24:03 +03:00 committed by Alexander Medvednikov
parent 93d27b0b9f
commit 331d6f98ee
2 changed files with 11 additions and 1 deletions
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2
vlib/builtin/string.v
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@ -462,7 +462,7 @@ pub fn (s string) count(substr string) int {
mut n := 0 mut n := 0
mut i := 0 mut i := 0
for { for {
i := s.index_after(substr, i) i = s.index_after(substr, i)
if i == -1 { if i == -1 {
return n return n
} }

10
vlib/builtin/string_test.v
View File

@ -338,3 +338,13 @@ fn test_bytes_to_string() {
bytes := [`h`, `e`, `l`, `l`, `o`] bytes := [`h`, `e`, `l`, `l`, `o`]
assert string(bytes, 5) == 'hello' assert string(bytes, 5) == 'hello'
} }
fn test_count() {
assert ''.count('') == 0
assert ''.count('a') == 0
assert 'a'.count('') == 0
assert 'aa'.count('a') == 2
assert 'aa'.count('aa') == 1
assert 'aabbaa'.count('aa') == 2
assert 'bbaabb'.count('aa') == 1
}