46 lines
1.2 KiB
Plaintext
46 lines
1.2 KiB
Plaintext
(module main)
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(fn parse_u32 ((text string)) -> (result u32 i32)
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(std.string.parse_u32_result text))
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(fn parsed_text ((text string)) -> string
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(std.num.u32_to_string (std.result.unwrap_ok (parse_u32 text))))
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(test "parse u32 zero ok"
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(= (parsed_text "0") "0"))
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(test "parse u32 high ok"
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(= (parsed_text "4294967295") "4294967295"))
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(test "parse u32 empty err"
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(let value (result u32 i32) (parse_u32 ""))
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(if (std.result.is_err value)
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(= (std.result.unwrap_err value) 1)
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false))
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(test "parse u32 plus err"
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(let value (result u32 i32) (parse_u32 "+1"))
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(if (std.result.is_err value)
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(= (std.result.unwrap_err value) 1)
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false))
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(test "parse u32 negative err"
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(let value (result u32 i32) (parse_u32 "-1"))
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(if (std.result.is_err value)
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(= (std.result.unwrap_err value) 1)
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false))
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(test "parse u32 above range err"
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(let value (result u32 i32) (parse_u32 "4294967296"))
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(if (std.result.is_err value)
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(= (std.result.unwrap_err value) 1)
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false))
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(fn main () -> i32
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(let value (result u32 i32) (parse_u32 "42"))
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(if (std.result.is_ok value)
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(if (= (std.num.u32_to_string (std.result.unwrap_ok value)) "42")
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0
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1)
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(std.result.unwrap_err value)))
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