rhai/tests/maps.rs

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#![cfg(not(feature = "no_object"))]
use rhai::{Engine, EvalAltResult, Map, ParseErrorType, Scope, INT};
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#[test]
fn test_map_indexing() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
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#[cfg(not(feature = "no_index"))]
{
assert_eq!(
engine.eval::<INT>(r#"let x = #{a: 1, b: 2, c: 3}; x["b"]"#)?,
2
);
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assert_eq!(
engine.eval::<INT>(r#"let x = #{a: 1, b: 2, c: 3,}; x["b"]"#)?,
2
);
assert_eq!(
engine.eval::<char>(
r#"
let y = #{d: 1, "e": #{a: 42, b: 88, "": "hello"}, " 123 xyz": 9};
y.e[""][4]
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"#
)?,
'o'
);
assert_eq!(
engine.eval::<String>(r#"let a = [#{s:"hello"}]; a[0].s[2] = 'X'; a[0].s"#)?,
"heXlo"
);
}
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assert_eq!(
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engine.eval::<INT>("let y = #{a: 1, b: 2, c: 3}; y.a = 5; y.a")?,
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5
);
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engine.eval::<()>("let y = #{a: 1, b: 2, c: 3}; y.z")?;
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#[cfg(not(feature = "no_index"))]
assert_eq!(
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engine.eval::<INT>(
r#"
let y = #{`a
b`: 1}; y["a\nb"]
"#
)?,
1
);
assert!(matches!(
*engine
.eval::<INT>("let y = #{`a${1}`: 1}; y.a1")
.expect_err("should error"),
EvalAltResult::ErrorParsing(ParseErrorType::PropertyExpected, _)
));
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assert!(engine.eval::<bool>(r#"let y = #{a: 1, b: 2, c: 3}; "c" in y"#)?);
assert!(engine.eval::<bool>(r#"let y = #{a: 1, b: 2, c: 3}; "b" in y"#)?);
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assert!(!engine.eval::<bool>(r#"let y = #{a: 1, b: 2, c: 3}; "z" in y"#)?);
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assert_eq!(
engine.eval::<INT>(
r#"
let x = #{a: 1, b: 2, c: 3};
let c = x.remove("c");
x.len() + c
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"#
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)?,
5
);
assert_eq!(
engine.eval::<INT>(
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"
let x = #{a: 1, b: 2, c: 3};
let y = #{b: 42, d: 9};
x.mixin(y);
x.len() + x.b
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"
)?,
46
);
assert_eq!(
engine.eval::<INT>(
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"
let x = #{a: 1, b: 2, c: 3};
x += #{b: 42, d: 9};
x.len() + x.b
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"
)?,
46
);
assert_eq!(
engine
.eval::<Map>(
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"
let x = #{a: 1, b: 2, c: 3};
let y = #{b: 42, d: 9};
x + y
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"
)?
.len(),
4
);
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Ok(())
}
#[test]
fn test_map_assign() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
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let x = engine.eval::<Map>(r#"let x = #{a: 1, b: true, "c$": "hello"}; x"#)?;
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assert_eq!(x["a"].clone_cast::<INT>(), 1);
assert_eq!(x["b"].clone_cast::<bool>(), true);
assert_eq!(x["c$"].clone_cast::<String>(), "hello");
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Ok(())
}
#[test]
fn test_map_return() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
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let x = engine.eval::<Map>(r#"#{a: 1, b: true, "c$": "hello"}"#)?;
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assert_eq!(x["a"].clone_cast::<INT>(), 1);
assert_eq!(x["b"].clone_cast::<bool>(), true);
assert_eq!(x["c$"].clone_cast::<String>(), "hello");
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Ok(())
}
#[test]
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#[cfg(not(feature = "no_index"))]
fn test_map_for() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
assert_eq!(
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engine
.eval::<String>(
r#"
let map = #{a: 1, b_x: true, "$c d e!": "hello"};
let s = "";
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for key in keys(map) {
s += key;
}
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s
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"#
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)?
.len(),
11
);
Ok(())
}
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#[test]
/// Because a Rhai object map literal is almost the same as JSON,
/// it is possible to convert from JSON into a Rhai object map.
fn test_map_json() -> Result<(), Box<EvalAltResult>> {
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let engine = Engine::new();
let json = r#"{"a":1, "b":true, "c":42, "$d e f!":"hello", "z":null}"#;
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let map = engine.parse_json(json, true)?;
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assert!(!map.contains_key("x"));
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assert_eq!(map["a"].clone_cast::<INT>(), 1);
assert_eq!(map["b"].clone_cast::<bool>(), true);
assert_eq!(map["c"].clone_cast::<INT>(), 42);
assert_eq!(map["$d e f!"].clone_cast::<String>(), "hello");
assert_eq!(map["z"].clone_cast::<()>(), ());
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#[cfg(not(feature = "no_index"))]
{
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let mut scope = Scope::new();
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scope.push_constant("map", map);
assert_eq!(
engine
.eval_with_scope::<String>(
&mut scope,
r#"
let s = "";
for key in keys(map) {
s += key;
}
s
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"#
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)?
.len(),
11
);
}
engine.parse_json(&format!("#{}", json), true)?;
assert!(matches!(
*engine.parse_json(" 123", true).expect_err("should error"),
EvalAltResult::ErrorParsing(ParseErrorType::MissingToken(token, _), pos)
if token == "{" && pos.position() == Some(4)
));
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Ok(())
}
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#[test]
#[cfg(not(feature = "no_function"))]
fn test_map_oop() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
assert_eq!(
engine.eval::<INT>(
r#"
let obj = #{ data: 40, action: Fn("abc") };
fn abc(x) { this.data += x; }
obj.action(2);
obj.data
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"#,
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)?,
42
);
Ok(())
}