6822505602
Uses statrs for numerical functions REFACTOR: Put statistical functions on its own module This might seem counter-intuitive but the wasm build after this refactor is 1528 bytes smaller :)
42 lines
1.3 KiB
Rust
42 lines
1.3 KiB
Rust
#![allow(clippy::unwrap_used)]
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use crate::test::util::new_empty_model;
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#[test]
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fn test_fn_poisson_dist_smoke() {
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let mut model = new_empty_model();
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// λ = 2, x = 3
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// P(X = 3) ≈ 0.180447045
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// P(X <= 3) ≈ 0.857123461
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model._set("A1", "=POISSON.DIST(3, 2, FALSE)");
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model._set("A2", "=POISSON.DIST(3, 2, TRUE)");
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// Wrong arg count
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model._set("A3", "=POISSON.DIST(3, 2)");
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model._set("A4", "=POISSON.DIST(3, 2, TRUE, FALSE)");
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// Domain errors
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model._set("A5", "=POISSON.DIST(-1, 2, TRUE)"); // x < 0
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model._set("A6", "=POISSON.DIST(3, -2, TRUE)"); // mean < 0
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// λ = 0 special cases
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model._set("A7", "=POISSON.DIST(0, 0, FALSE)"); // 1
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model._set("A8", "=POISSON.DIST(1, 0, FALSE)"); // 0
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model._set("A9", "=POISSON.DIST(5, 0, TRUE)"); // 1
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model.evaluate();
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assert_eq!(model._get_text("A1"), *"0.180447044");
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assert_eq!(model._get_text("A2"), *"0.85712346");
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assert_eq!(model._get_text("A3"), *"#ERROR!");
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assert_eq!(model._get_text("A4"), *"#ERROR!");
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assert_eq!(model._get_text("A5"), *"#NUM!");
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assert_eq!(model._get_text("A6"), *"#NUM!");
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assert_eq!(model._get_text("A7"), *"1");
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assert_eq!(model._get_text("A8"), *"0");
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assert_eq!(model._get_text("A9"), *"1");
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}
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