rhai/tests/arrays.rs

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#![cfg(not(feature = "no_index"))]
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use rhai::{Array, Dynamic, Engine, EvalAltResult, ParseErrorType, INT};
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use std::iter::FromIterator;
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#[test]
fn test_arrays() -> Result<(), Box<EvalAltResult>> {
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let a = Array::from_iter([(42 as INT).into()]);
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assert_eq!(a[0].clone_cast::<INT>(), 42);
let engine = Engine::new();
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assert_eq!(engine.eval::<INT>("let x = [1, 2, 3]; x[1]")?, 2);
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assert_eq!(engine.eval::<INT>("let x = [1, 2, 3,]; x[1]")?, 2);
assert_eq!(engine.eval::<INT>("let y = [1, 2, 3]; y[1] = 5; y[1]")?, 5);
assert_eq!(
engine.eval::<char>(r#"let y = [1, [ 42, 88, "93" ], 3]; y[1][2][1]"#)?,
'3'
);
assert_eq!(engine.eval::<INT>("let y = [1, 2, 3]; y[0]")?, 1);
assert_eq!(engine.eval::<INT>("let y = [1, 2, 3]; y[-1]")?, 3);
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assert_eq!(engine.eval::<INT>("let y = [1, 2, 3]; y[-3]")?, 1);
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assert!(engine.eval::<bool>("let y = [1, 2, 3]; 2 in y")?);
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assert!(engine.eval::<bool>("let y = [1, 2, 3]; 42 !in y")?);
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assert_eq!(engine.eval::<INT>("let y = [1, 2, 3]; y += 4; y[3]")?, 4);
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assert_eq!(
engine.eval::<INT>("let y = [1, 2, 3]; pad(y, 5, 42); len(y)")?,
5
);
assert_eq!(
engine.eval::<INT>("let y = [1, 2, 3]; pad(y, 5, [42]); len(y)")?,
5
);
assert_eq!(
engine.eval::<INT>("let y = [1, 2, 3]; pad(y, 5, [42, 999, 123]); y[4][0]")?,
42
);
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assert_eq!(
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engine
.eval::<Dynamic>("let y = [1, 2, 3]; y[1] += 4; y")?
.into_typed_array::<INT>()?,
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[1, 6, 3]
);
assert_eq!(
engine
.eval::<Dynamic>("let y = [1, 2, 3]; extract(y, 1, 10)")?
.into_typed_array::<INT>()?,
vec![2, 3]
);
assert_eq!(
engine
.eval::<Dynamic>("let y = [1, 2, 3]; extract(y, -3, 1)")?
.into_typed_array::<INT>()?,
vec![1]
);
assert_eq!(
engine
.eval::<Dynamic>("let y = [1, 2, 3]; extract(y, -99, 2)")?
.into_typed_array::<INT>()?,
vec![1, 2]
);
assert_eq!(
engine
.eval::<Dynamic>("let y = [1, 2, 3]; extract(y, 99, 1)")?
.into_typed_array::<INT>()?,
vec![] as Vec<INT>
);
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#[cfg(not(feature = "no_object"))]
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{
assert_eq!(
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engine
.eval::<Dynamic>("let y = [1, 2, 3]; y.push(4); y")?
.into_typed_array::<INT>()?,
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[1, 2, 3, 4]
);
assert_eq!(
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engine
.eval::<Dynamic>("let y = [1, 2, 3]; y.insert(0, 4); y")?
.into_typed_array::<INT>()?,
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[4, 1, 2, 3]
);
assert_eq!(
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engine
.eval::<Dynamic>("let y = [1, 2, 3]; y.insert(999, 4); y")?
.into_typed_array::<INT>()?,
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[1, 2, 3, 4]
);
assert_eq!(
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engine
.eval::<Dynamic>("let y = [1, 2, 3]; y.insert(-2, 4); y")?
.into_typed_array::<INT>()?,
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[1, 4, 2, 3]
);
assert_eq!(
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engine
.eval::<Dynamic>("let y = [1, 2, 3]; y.insert(-999, 4); y")?
.into_typed_array::<INT>()?,
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[4, 1, 2, 3]
);
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assert_eq!(
engine.eval::<INT>("let y = [1, 2, 3]; let z = [42]; y[z.len]")?,
2
);
assert_eq!(
engine.eval::<INT>("let y = [1, 2, [3, 4, 5, 6]]; let z = [42]; y[2][z.len]")?,
4
);
assert_eq!(
engine.eval::<INT>("let y = [1, 2, 3]; let z = [2]; y[z[0]]")?,
3
);
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assert_eq!(
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engine
.eval::<Dynamic>(
"
let x = [2, 9];
x.insert(-1, 1);
x.insert(999, 3);
x.insert(-9, 99);
let r = x.remove(2);
let y = [4, 5];
x.append(y);
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x
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"
)?
.into_typed_array::<INT>()?,
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[99, 2, 9, 3, 4, 5]
);
}
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#[cfg(not(feature = "no_object"))]
assert_eq!(
engine.eval::<INT>(
"
let x = #{ foo: 42 };
let n = 0;
let a = [[x]];
let i = [n];
a[n][i[n]].foo
"
)?,
42
);
assert_eq!(
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engine
.eval::<Dynamic>(
"
let x = [1, 2, 3];
x += [4, 5];
x
"
)?
.into_typed_array::<INT>()?,
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[1, 2, 3, 4, 5]
);
assert_eq!(
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engine
.eval::<Dynamic>(
"
let x = [1, 2, 3];
let y = [4, 5];
x + y
"
)?
.into_typed_array::<INT>()?,
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[1, 2, 3, 4, 5]
);
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#[cfg(not(feature = "no_closure"))]
assert!(!engine.eval::<bool>(
"
let x = 42;
let y = [];
let f = || x;
for n in 0..10 {
y += x;
}
some(y, |x| is_shared(x))
"
)?);
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let value = vec![
String::from("hello"),
String::from("world"),
String::from("foo"),
String::from("bar"),
];
let array: Dynamic = value.into();
assert_eq!(array.type_name(), "array");
let array = array.cast::<Array>();
assert_eq!(array[0].type_name(), "string");
assert_eq!(array.len(), 4);
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Ok(())
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}
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#[test]
fn test_array_index_types() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
engine.compile("[1, 2, 3][0]['x']")?;
assert!(matches!(
engine
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.compile("[1, 2, 3]['x']")
.expect_err("should error")
.err_type(),
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ParseErrorType::MalformedIndexExpr(..)
));
#[cfg(not(feature = "no_float"))]
assert!(matches!(
engine
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.compile("[1, 2, 3][123.456]")
.expect_err("should error")
.err_type(),
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ParseErrorType::MalformedIndexExpr(..)
));
assert!(matches!(
engine
.compile("[1, 2, 3][()]")
.expect_err("should error")
.err_type(),
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ParseErrorType::MalformedIndexExpr(..)
));
assert!(matches!(
engine
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.compile(r#"[1, 2, 3]["hello"]"#)
.expect_err("should error")
.err_type(),
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ParseErrorType::MalformedIndexExpr(..)
));
assert!(matches!(
engine
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.compile("[1, 2, 3][true && false]")
.expect_err("should error")
.err_type(),
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ParseErrorType::MalformedIndexExpr(..)
));
Ok(())
}
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#[test]
#[cfg(not(feature = "no_object"))]
fn test_array_with_structs() -> Result<(), Box<EvalAltResult>> {
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#[derive(Clone)]
struct TestStruct {
x: INT,
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}
impl TestStruct {
fn update(&mut self) {
self.x += 1000;
}
fn get_x(&mut self) -> INT {
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self.x
}
fn set_x(&mut self, new_x: INT) {
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self.x = new_x;
}
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fn new() -> Self {
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Self { x: 1 }
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}
}
let mut engine = Engine::new();
engine.register_type::<TestStruct>();
engine.register_get_set("x", TestStruct::get_x, TestStruct::set_x);
engine.register_fn("update", TestStruct::update);
engine.register_fn("new_ts", TestStruct::new);
assert_eq!(engine.eval::<INT>("let a = [new_ts()]; a[0].x")?, 1);
assert_eq!(
engine.eval::<INT>(
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"
let a = [new_ts()];
a[0].x = 100;
a[0].update();
a[0].x
"
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)?,
1100
);
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Ok(())
}
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#[cfg(not(feature = "no_object"))]
#[cfg(not(feature = "no_function"))]
#[cfg(not(feature = "no_closure"))]
#[test]
fn test_arrays_map_reduce() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
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assert_eq!(engine.eval::<INT>("[1].map(|x| x + 41)[0]")?, 42);
assert_eq!(engine.eval::<INT>("[1].map(|| this + 41)[0]")?, 42);
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assert_eq!(
engine.eval::<INT>("let x = [1, 2, 3]; x.for_each(|| this += 41); x[0]")?,
42
);
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assert_eq!(
engine.eval::<INT>(
"
let x = [1, 2, 3];
let sum = 0;
let factor = 2;
x.for_each(|| sum += this * factor);
sum
"
)?,
12
);
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assert_eq!(engine.eval::<INT>("([1].map(|x| x + 41))[0]")?, 42);
assert_eq!(
engine.eval::<INT>("let c = 40; let y = 1; [1].map(|x, i| c + x + y + i)[0]")?,
42
);
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assert_eq!(
engine.eval::<INT>("let x = [1, 2, 3]; x.for_each(|i| this += i); x[2]")?,
5
);
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assert_eq!(
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engine
.eval::<Dynamic>(
"
let x = [1, 2, 3];
x.filter(|v| v > 2)
"
)?
.into_typed_array::<INT>()?,
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[3]
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);
assert_eq!(
engine
.eval::<Dynamic>(
"
let x = [1, 2, 3];
x.filter(|| this > 2)
"
)?
.into_typed_array::<INT>()?,
[3]
);
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assert_eq!(
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engine
.eval::<Dynamic>(
"
let x = [1, 2, 3];
x.filter(|v, i| v > i)
"
)?
.into_typed_array::<INT>()?,
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[1, 2, 3]
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);
assert_eq!(
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engine
.eval::<Dynamic>(
"
let x = [1, 2, 3];
x.map(|v| v * 2)
"
)?
.into_typed_array::<INT>()?,
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[2, 4, 6]
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);
assert_eq!(
engine
.eval::<Dynamic>(
"
let x = [1, 2, 3];
x.map(|| this * 2)
"
)?
.into_typed_array::<INT>()?,
[2, 4, 6]
);
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assert_eq!(
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engine
.eval::<Dynamic>(
"
let x = [1, 2, 3];
x.map(|v, i| v * i)
"
)?
.into_typed_array::<INT>()?,
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[0, 2, 6]
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);
assert_eq!(
engine.eval::<INT>(
r#"
let x = [1, 2, 3];
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x.reduce(|sum, v| if sum.type_of() == "()" { v * v } else { sum + v * v })
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"#
)?,
14
);
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// assert_eq!(
// engine.eval::<INT>(
// "
// let x = [1, 2, 3];
// x.reduce(|sum, v, i| {
// if i == 0 { sum = 10 }
// sum + v * v
// })
// "
// )?,
// 24
// );
// assert_eq!(
// engine.eval::<INT>(
// "
// let x = [1, 2, 3];
// x.reduce(|sum, i| {
// if i == 0 { sum = 10 }
// sum + this * this
// })
// "
// )?,
// 24
// );
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assert_eq!(
engine.eval::<INT>(
r#"
let x = [1, 2, 3];
x.reduce_rev(|sum, v| if sum.type_of() == "()" { v * v } else { sum + v * v })
"#
)?,
14
);
assert_eq!(
engine.eval::<INT>(
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"
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let x = [1, 2, 3];
x.reduce_rev(|sum, v, i| { if i == 2 { sum = 10 } sum + v * v })
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"
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)?,
24
);
assert!(engine.eval::<bool>(
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"
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let x = [1, 2, 3];
x.some(|v| v > 1)
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"
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)?);
assert!(engine.eval::<bool>(
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"
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let x = [1, 2, 3];
x.some(|v, i| v * i == 0)
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"
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)?);
assert!(!engine.eval::<bool>(
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"
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let x = [1, 2, 3];
x.all(|v| v > 1)
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"
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)?);
assert!(engine.eval::<bool>(
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"
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let x = [1, 2, 3];
x.all(|v, i| v > i)
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"
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)?);
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assert_eq!(
engine.eval::<INT>(
"
let x = [1, 2, 3];
x.find(|v| v > 2)
"
)?,
3
);
assert_eq!(
engine.eval::<INT>(
"
let x = [1, 2, 3];
x.find(|v, i| v * i == 6)
"
)?,
3
);
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engine
.eval::<()>(
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"
let x = [1, 2, 3, 2, 1];
x.find(|v| v > 4)
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",
)
.unwrap();
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assert_eq!(
engine.eval::<INT>(
"
let x = [#{alice: 1}, #{bob: 2}, #{clara: 3}];
x.find_map(|v| v.bob)
"
)?,
2
);
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engine
.eval::<()>(
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"
let x = [#{alice: 1}, #{bob: 2}, #{clara: 3}];
x.find_map(|v| v.dave)
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",
)
.unwrap();
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Ok(())
}
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#[test]
fn test_arrays_elvis() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
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engine.eval::<()>("let x = (); x?[2]").unwrap();
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engine.run("let x = (); x?[2] = 42")?;
Ok(())
}