test(tazjin/rlox): Add some tests for numerical operations
If I was adding any dependencies, this might be a good one for a property-based test thing, but I'm not going to. Change-Id: Ia801d041479d1a88c59ef9e0fe1460b3640382e3 Reviewed-on: https://cl.tvl.fyi/c/depot/+/2569 Reviewed-by: tazjin <mail@tazj.in> Tested-by: BuildkiteCI
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@ -9,6 +9,9 @@ mod opcode;
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mod value;
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mod vm;
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#[cfg(test)]
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mod tests;
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use chunk::Chunk;
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pub struct Interpreter {}
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48
users/tazjin/rlox/src/bytecode/tests.rs
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48
users/tazjin/rlox/src/bytecode/tests.rs
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@ -0,0 +1,48 @@
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use super::*;
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use crate::Lox;
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fn expect(code: &str, value: value::Value) {
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let result = Interpreter::create()
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.interpret(code.into())
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.expect("evaluation failed");
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assert_eq!(result, value);
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}
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#[test]
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fn numbers() {
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expect("1", 1.0);
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expect("13.37", 13.37);
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}
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#[test]
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fn negative_numbers() {
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// Note: This technically tests unary operators.
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expect("-1", -1.0);
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expect("-13.37", -13.37);
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}
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#[test]
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fn terms() {
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expect("1 + 2", 3.0);
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expect("3 - 1", 2.0);
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expect("0.7 + 0.3", 1.0);
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expect("1 + -3", -2.0);
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expect("-1 - -1", 0.0);
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expect("10 - -10 + 10", 30.0);
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}
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#[test]
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fn factors() {
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expect("1 * 2", 2.0);
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expect("10 / 5", 2.0);
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expect("0.7 * 4 / 1.4", 2.0);
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expect("10 * -10 / 10", -10.0);
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}
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#[test]
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fn arithmetic() {
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expect("10 - 3 * 2", 4.0);
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expect("-4 * -4 + (14 - 5)", 25.0);
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expect("(702 + 408) - ((239 - 734) / -5) + -4", 1007.0);
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}
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