mirror of
https://github.com/vlang/v.git
synced 2023-08-10 21:13:21 +03:00
90 lines
2.3 KiB
V
90 lines
2.3 KiB
V
fn test_simple_string_interpolation() {
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a := 'Hello'
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b := 'World'
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res := '$a $b'
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assert res == 'Hello World'
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}
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fn test_mixed_string_interpolation() {
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num := 7
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str := 'abc'
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s1 := 'number=$num'
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assert s1 == 'number=7'
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s2 := 'string=$str'
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assert s2 == 'string=abc'
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s3 := 'a: $num | b: $str'
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assert s3 == 'a: 7 | b: abc'
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}
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fn test_formatted_string_interpolation() {
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x := 'abc'
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axb := 'a:$x:b'
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assert axb == 'a:abc:b'
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x_10 := 'a:${x:10s}:b'
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x10_ := 'a:${x:-10s}:b'
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assert x_10 == 'a: abc:b'
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assert x10_ == 'a:abc :b'
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i := 23
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si_right := '${i:10d}'
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si__left := '${i:-10d}'
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assert si_right == ' 23'
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assert si__left == '23 '
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}
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fn test_excape_dollar_in_string() {
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i := 42
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assert '($i)' == '(42)'
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assert '(\$i)'.contains('i') && !'(\$i)'.contains('42')
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assert !'(\\$i)'.contains('i') && '(\\$i)'.contains('42') && '(\\$i)'.contains('\\')
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assert '(\\\$i)'.contains('i') && !'(\\\$i)'.contains('42') && '(\\$i)'.contains('\\')
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assert !'(\\\\$i)'.contains('i') && '(\\\\$i)'.contains('42') && '(\\\\$i)'.contains('\\\\')
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assert '(${i})' == '(42)'
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assert '(\${i})'.contains('i') && !'(\${i})'.contains('42')
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assert !'(\\${i})'.contains('i') && '(\\${i})'.contains('42') && '(\\${i})'.contains('\\')
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assert '(\\\${i})'.contains('i') && !'(\\\${i})'.contains('42') && '(\\${i})'.contains('\\')
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assert !'(\\\\${i})'.contains('i') && '(\\\\${i})'.contains('42') && '(\\\\${i})'.contains('\\\\')
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assert i == 42
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}
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fn test_implicit_str() {
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i := 42
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assert 'int $i' == 'int 42'
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assert '$i' == '42'
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check := '$i' == '42'
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assert check
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text := '$i' + '42'
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assert text == '4242'
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}
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fn test_string_interpolation_percent_escaping(){
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test := 'hello'
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hello := 'world'
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x := '%.*s$hello$test |${hello:-30s}|'
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assert x == '%.*sworldhello |world |'
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}
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fn test_string_interpolation_string_prefix() {
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// `r`, `c` and `js` are also used as a string prefix.
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r := 'r'
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rr := '$r$r'
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assert rr == 'rr'
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c := 'c'
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cc := '$c$c'
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assert cc == 'cc'
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js := 'js'
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jsjs := '$js$js'
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assert jsjs == 'jsjs'
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}
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fn test_inttypes_string_interpolation() {
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s := i16(-23456)
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us := u16(54321)
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i := -1622999040
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ui := u32(3421958087)
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l := i64(-7694555558525237396)
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ul := u64(17234006112912956370)
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assert '$s $us' == '-23456 54321'
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assert '$ui $i' == '3421958087 -1622999040'
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assert '$l $ul' == '-7694555558525237396 17234006112912956370'
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}
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