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ADD TEST : burrows_wheeler_transform #380

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Merged
merged 2 commits into from
Sep 22, 2022
Merged

ADD TEST : burrows_wheeler_transform #380

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593df0f
change name:encoded_target to decoded_target in fn run_length_decoding
Sep 21, 2022
bdd746a
add:bwt:stand alone function test
Sep 21, 2022
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30 changes: 29 additions & 1 deletion src/string/burrows_wheeler_transform.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -43,7 +43,35 @@ mod tests {
use super::*;

#[test]
fn basic() {
//Ensure function stand-alone legitimacy
fn stand_alone_function() {
assert_eq!(
burrows_wheeler_transform("CARROT".to_string()),
("CTRRAO".to_string(), 1usize)
);
assert_eq!(
inv_burrows_wheeler_transform(("CTRRAO".to_string(), 1usize)),
("CARROT".to_string())
);
assert_eq!(
burrows_wheeler_transform("THEALGORITHMS".to_string()),
("EHLTTRAHGOMSI".to_string(), 11usize)
);
assert_eq!(
inv_burrows_wheeler_transform(("EHLTTRAHGOMSI".to_string(), 11usize)),
("THEALGORITHMS".to_string())
);
assert_eq!(
burrows_wheeler_transform("!.!.!??.=::".to_string()),
(":..!!?:=.?!".to_string(), 0usize)
);
assert_eq!(
inv_burrows_wheeler_transform((":..!!?:=.?!".to_string(), 0usize)),
"!.!.!??.=::"
);
}
#[test]
fn basic_characters() {
assert_eq!(
inv_burrows_wheeler_transform(burrows_wheeler_transform("CARROT".to_string())),
"CARROT"
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6 changes: 3 additions & 3 deletions src/string/run_length_encoding.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -31,15 +31,15 @@ pub fn run_length_decoding(target: String) -> String {
}

let mut character_count: String = String::new();
let mut encoded_target = String::new();
let mut decoded_target = String::new();

for c in target.as_str().chars() {
character_count.push(c);
let is_numeric: bool = character_count.parse::<i32>().is_ok();

if !is_numeric {
let pop_char: char = character_count.pop().unwrap();
encoded_target.push_str(
decoded_target.push_str(
&pop_char
.to_string()
.repeat(character_count.parse().unwrap()),
Expand All @@ -48,7 +48,7 @@ pub fn run_length_decoding(target: String) -> String {
}
}

encoded_target
decoded_target
}

#[cfg(test)]
Expand Down