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41 lines
687 B
V
41 lines
687 B
V
import strings
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fn test_sb() {
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mut sb := strings.Builder{}
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sb.write('hi')
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sb.write('!')
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sb.write('hello')
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assert sb.str() == 'hi!hello'
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assert sb.len == 8
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sb = strings.new_builder(10)
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sb.write('a')
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sb.write('b')
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println(sb.str())
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assert sb.str() == 'ab'
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assert sb.len == 2
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}
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const (
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n = 100000
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)
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fn test_big_sb() {
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mut sb := strings.new_builder(100)
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mut sb2 := strings.new_builder(10000)
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for i in 0..n {
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sb.writeln(i.str())
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sb2.write('+')
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}
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s := sb.str()
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lines := s.split_into_lines()
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assert lines.len == n
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assert lines[0] == '0'
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assert lines[1] == '1'
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assert lines[777] == '777'
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assert lines[98765] == '98765'
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println(sb2.len)
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assert sb2.len == n
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}
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