30 lines
851 B
Rust
30 lines
851 B
Rust
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/// Converts a fractional relevance score into a whole-number percentage for
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/// the row's badge, rounding rather than truncating so e.g. 0.995 shows 100%
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/// instead of 99%.
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pub fn score_percent(final_score: Option<f32>) -> Option<i32> {
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final_score.map(|s| (s * 100.0).round() as i32)
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn no_score_yields_no_percent() {
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assert_eq!(score_percent(None), None);
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}
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#[test]
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fn score_is_rounded_not_truncated() {
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assert_eq!(score_percent(Some(0.995)), Some(100));
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assert_eq!(score_percent(Some(0.554)), Some(55));
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}
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#[test]
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fn score_is_scaled_to_a_percentage() {
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assert_eq!(score_percent(Some(0.5)), Some(50));
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assert_eq!(score_percent(Some(0.0)), Some(0));
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assert_eq!(score_percent(Some(1.0)), Some(100));
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}
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}
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