137 lines
2.5 KiB
Rust
137 lines
2.5 KiB
Rust
use dust_lang::{error::ValidationError, *};
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#[test]
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fn function_call() {
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assert_eq!(
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interpret(
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"
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foobar = (message <str>) <str> { message }
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foobar('Hiya')
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",
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),
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Ok(Value::string("Hiya".to_string()))
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);
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}
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#[test]
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fn call_empty_function() {
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assert_eq!(
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interpret(
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"
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foobar = (message <str>) <none> {}
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foobar('Hiya')
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",
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),
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Ok(Value::none())
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);
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}
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#[test]
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fn callback() {
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assert_eq!(
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interpret(
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"
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foobar = (cb <() -> str>) <str> {
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cb()
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}
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foobar(() <str> { 'Hiya' })
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",
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),
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Ok(Value::string("Hiya".to_string()))
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);
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}
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#[test]
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fn built_in_function_call() {
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assert_eq!(interpret("output('Hiya')"), Ok(Value::none()));
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}
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#[test]
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fn function_context_does_not_capture_normal_values() {
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assert_eq!(
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interpret(
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"
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x = 1
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foo = () <any> { x }
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"
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),
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Err(Error::Validation(
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ValidationError::VariableIdentifierNotFound(Identifier::new("x"))
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))
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);
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assert_eq!(
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interpret(
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"
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x = 1
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foo = (x <int>) <int> { x }
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foo(2)
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"
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),
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Ok(Value::Integer(2))
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);
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}
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#[test]
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fn function_context_captures_functions() {
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assert_eq!(
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interpret(
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"
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bar = () <int> { 2 }
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foo = () <int> { bar() }
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foo()
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"
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),
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Ok(Value::Integer(2))
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);
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}
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#[test]
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fn function_context_captures_structure_definitions() {
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let mut map = Map::new();
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map.set(Identifier::new("name"), Value::string("bob"));
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assert_eq!(
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interpret(
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"
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struct User {
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name <str>
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}
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bob = () <User> {
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User::{
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name = 'bob'
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}
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}
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bob()
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"
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),
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Ok(Value::Struct(StructInstance::new("User".into(), map)))
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);
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}
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#[test]
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fn recursion() {
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env_logger::builder().is_test(true).try_init().unwrap();
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assert_eq!(
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interpret(
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"
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fib = (i <int>) <int> {
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if i <= 1 {
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1
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} else {
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fib(i - 1) + fib(i - 2)
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}
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}
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fib(8)
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"
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),
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Ok(Value::Integer(34))
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);
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}
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