rhai/tests/switch.rs

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use rhai::{Engine, EvalAltResult, Scope, INT};
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#[test]
fn test_switch() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
let mut scope = Scope::new();
scope.push("x", 42 as INT);
assert_eq!(
engine.eval_with_scope::<bool>(&mut scope, "switch x { 1 => (), 2 => 'a', 42 => true }")?,
true
);
assert_eq!(
engine.eval_with_scope::<bool>(&mut scope, "switch x { 1 => (), 2 => 'a', _ => true }")?,
true
);
assert_eq!(
engine.eval_with_scope::<()>(&mut scope, "switch x { 1 => 123, 2 => 'a' }")?,
()
);
assert_eq!(
engine.eval_with_scope::<INT>(
&mut scope,
"switch x { 1 => 123, 42 => { x / 2 }, _ => 999 }"
)?,
21
);
#[cfg(not(feature = "no_index"))]
assert_eq!(
engine.eval_with_scope::<INT>(
&mut scope,
r"
let y = [1, 2, 3];
switch y {
42 => 1,
true => 2,
[1, 2, 3] => 3,
_ => 9
}
"
)?,
3
);
#[cfg(not(feature = "no_object"))]
assert_eq!(
engine.eval_with_scope::<INT>(
&mut scope,
r"
let y = #{a:1, b:true, c:'x'};
switch y {
42 => 1,
true => 2,
#{b:true, c:'x', a:1} => 3,
_ => 9
}
"
)?,
3
);
Ok(())
}
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#[cfg(not(feature = "no_index"))]
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#[cfg(not(feature = "no_object"))]
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mod test_switch_enum {
use super::*;
use rhai::Array;
#[derive(Debug, Clone)]
enum MyEnum {
Foo,
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Bar(INT),
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Baz(String, bool),
}
impl MyEnum {
fn get_enum_data(&mut self) -> Array {
match self {
Self::Foo => vec!["Foo".into()] as Array,
Self::Bar(num) => vec!["Bar".into(), (*num).into()] as Array,
Self::Baz(name, option) => {
vec!["Baz".into(), name.clone().into(), (*option).into()] as Array
}
}
}
}
#[test]
fn test_switch_enum() -> Result<(), Box<EvalAltResult>> {
let mut engine = Engine::new();
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engine
.register_type_with_name::<MyEnum>("MyEnum")
.register_get("get_data", MyEnum::get_enum_data);
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let mut scope = Scope::new();
scope.push("x", MyEnum::Baz("hello".to_string(), true));
assert_eq!(
engine.eval_with_scope::<INT>(
&mut scope,
r#"
switch x.get_data {
["Foo"] => 1,
["Bar", 42] => 2,
["Bar", 123] => 3,
["Baz", "hello", false] => 4,
["Baz", "hello", true] => 5,
_ => 9
}
"#
)?,
5
);
Ok(())
}
}