rhai/tests/modules.rs
2020-10-16 21:16:06 +08:00

435 lines
11 KiB
Rust

#![cfg(not(feature = "no_module"))]
use rhai::{
module_resolvers::StaticModuleResolver, Dynamic, Engine, EvalAltResult, ImmutableString,
Module, ParseError, ParseErrorType, Scope, INT,
};
#[test]
fn test_module() {
let mut module = Module::new();
module.set_var("answer", 42 as INT);
assert!(module.contains_var("answer"));
assert_eq!(module.get_var_value::<INT>("answer").unwrap(), 42);
}
#[test]
fn test_module_sub_module() -> Result<(), Box<EvalAltResult>> {
let mut module = Module::new();
let mut sub_module = Module::new();
let mut sub_module2 = Module::new();
sub_module2.set_var("answer", 41 as INT);
let hash_inc = sub_module2.set_fn_1("inc", |x: INT| Ok(x + 1));
sub_module.set_sub_module("universe", sub_module2);
module.set_sub_module("life", sub_module);
module.set_var("MYSTIC_NUMBER", Dynamic::from(42 as INT));
assert!(module.contains_sub_module("life"));
let m = module.get_sub_module("life").unwrap();
assert!(m.contains_sub_module("universe"));
let m2 = m.get_sub_module("universe").unwrap();
assert!(m2.contains_var("answer"));
assert!(m2.contains_fn(hash_inc, false));
assert_eq!(m2.get_var_value::<INT>("answer").unwrap(), 41);
let mut resolver = StaticModuleResolver::new();
resolver.insert("question", module);
let mut engine = Engine::new();
engine.set_module_resolver(Some(resolver));
assert_eq!(
engine.eval::<INT>(r#"import "question" as q; q::MYSTIC_NUMBER"#)?,
42
);
assert_eq!(
engine.eval::<INT>(r#"import "question" as q; q::life::universe::answer + 1"#)?,
42
);
assert_eq!(
engine.eval::<INT>(
r#"import "question" as q; q::life::universe::inc(q::life::universe::answer)"#
)?,
42
);
Ok(())
}
#[test]
fn test_module_resolver() -> Result<(), Box<EvalAltResult>> {
let mut resolver = StaticModuleResolver::new();
let mut module = Module::new();
module.set_var("answer", 42 as INT);
module.set_fn_4("sum".to_string(), |x: INT, y: INT, z: INT, w: INT| {
Ok(x + y + z + w)
});
module.set_fn_1_mut("double".to_string(), |x: &mut INT| {
*x *= 2;
Ok(())
});
#[cfg(not(feature = "no_float"))]
module.set_fn_4_mut(
"sum_of_three_args".to_string(),
|target: &mut INT, a: INT, b: INT, c: f64| {
*target = a + b + c as INT;
Ok(())
},
);
resolver.insert("hello", module);
let mut engine = Engine::new();
engine.set_module_resolver(Some(resolver));
assert_eq!(
engine.eval::<INT>(
r#"
import "hello" as h1;
import "hello" as h2;
h1::sum(h2::answer, -10, 3, 7)
"#
)?,
42
);
assert_eq!(
engine.eval::<INT>(
r#"
import "hello" as h1;
import "hello" as h2;
let x = 42;
h1::sum(x, -10, 3, 7)
"#
)?,
42
);
assert_eq!(
engine.eval::<INT>(
r#"
import "hello" as h1;
import "hello" as h2;
let x = 42;
h1::sum(x, 0, 0, 0);
x
"#
)?,
42
);
assert_eq!(
engine.eval::<INT>(
r#"
import "hello" as h;
let x = 21;
h::double(x);
x
"#
)?,
42
);
#[cfg(not(feature = "no_float"))]
{
assert_eq!(
engine.eval::<INT>(
r#"
import "hello" as h;
let x = 21;
h::sum_of_three_args(x, 14, 26, 2.0);
x
"#
)?,
42
);
}
#[cfg(not(feature = "unchecked"))]
{
engine.set_max_modules(5);
assert!(matches!(
*engine
.eval::<INT>(
r#"
let sum = 0;
for x in range(0, 10) {
import "hello" as h;
sum += h::answer;
}
sum
"#
)
.expect_err("should error"),
EvalAltResult::ErrorTooManyModules(_)
));
#[cfg(not(feature = "no_function"))]
assert!(matches!(
*engine
.eval::<INT>(
r#"
let sum = 0;
fn foo() {
import "hello" as h;
sum += h::answer;
}
for x in range(0, 10) {
foo();
}
sum
"#
)
.expect_err("should error"),
EvalAltResult::ErrorInFunctionCall(fn_name, _, _) if fn_name == "foo"
));
engine.set_max_modules(1000);
#[cfg(not(feature = "no_function"))]
engine.eval::<()>(
r#"
fn foo() {
import "hello" as h;
}
for x in range(0, 10) {
foo();
}
"#,
)?;
}
Ok(())
}
#[test]
#[cfg(not(feature = "no_function"))]
fn test_module_from_ast() -> Result<(), Box<EvalAltResult>> {
let mut engine = Engine::new();
let mut resolver1 = StaticModuleResolver::new();
let mut sub_module = Module::new();
sub_module.set_var("foo", true);
resolver1.insert("another module", sub_module);
let ast = engine.compile(
r#"
// Functions become module functions
fn calc(x) {
x + 1
}
fn add_len(x, y) {
x + len(y)
}
fn cross_call(x) {
calc(x)
}
private fn hidden() {
throw "you shouldn't see me!";
}
// Imported modules become sub-modules
import "another module" as extra;
// Variables defined at global level become module variables
const x = 123;
let foo = 41;
let hello;
// Final variable values become constant module variable values
foo = calc(foo);
hello = "hello, " + foo + " worlds!";
export
x as abc,
foo,
hello;
"#,
)?;
engine.set_module_resolver(Some(resolver1));
let module = Module::eval_ast_as_new(Scope::new(), &ast, &engine)?;
let mut resolver2 = StaticModuleResolver::new();
resolver2.insert("testing", module);
engine.set_module_resolver(Some(resolver2));
assert_eq!(
engine.eval::<INT>(r#"import "testing" as ttt; ttt::abc"#)?,
123
);
assert_eq!(
engine.eval::<INT>(r#"import "testing" as ttt; ttt::foo"#)?,
42
);
assert!(engine.eval::<bool>(r#"import "testing" as ttt; ttt::extra::foo"#)?);
assert_eq!(
engine.eval::<String>(r#"import "testing" as ttt; ttt::hello"#)?,
"hello, 42 worlds!"
);
assert_eq!(
engine.eval::<INT>(r#"import "testing" as ttt; ttt::calc(999)"#)?,
1000
);
assert_eq!(
engine.eval::<INT>(r#"import "testing" as ttt; ttt::cross_call(999)"#)?,
1000
);
assert_eq!(
engine.eval::<INT>(r#"import "testing" as ttt; ttt::add_len(ttt::foo, ttt::hello)"#)?,
59
);
assert!(matches!(
*engine
.consume(r#"import "testing" as ttt; ttt::hidden()"#)
.expect_err("should error"),
EvalAltResult::ErrorFunctionNotFound(fn_name, _) if fn_name == "ttt::hidden ()"
));
Ok(())
}
#[test]
fn test_module_export() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
assert!(matches!(
engine.compile(r"let x = 10; { export x; }").expect_err("should error"),
ParseError(x, _) if *x == ParseErrorType::WrongExport
));
#[cfg(not(feature = "no_function"))]
assert!(matches!(
engine.compile(r"fn abc(x) { export x; }").expect_err("should error"),
ParseError(x, _) if *x == ParseErrorType::WrongExport
));
Ok(())
}
#[test]
fn test_module_str() -> Result<(), Box<EvalAltResult>> {
fn test_fn(_input: ImmutableString) -> Result<INT, Box<EvalAltResult>> {
Ok(42)
}
fn test_fn2(_input: &str) -> Result<INT, Box<EvalAltResult>> {
Ok(42)
}
fn test_fn3(_input: String) -> Result<INT, Box<EvalAltResult>> {
Ok(42)
}
let mut engine = rhai::Engine::new();
let mut module = Module::new();
module.set_fn_1("test", test_fn);
module.set_fn_1("test2", test_fn2);
module.set_fn_1("test3", test_fn3);
let mut static_modules = rhai::module_resolvers::StaticModuleResolver::new();
static_modules.insert("test", module);
engine.set_module_resolver(Some(static_modules));
assert_eq!(
engine.eval::<INT>(r#"import "test" as test; test::test("test");"#)?,
42
);
assert_eq!(
engine.eval::<INT>(r#"import "test" as test; test::test2("test");"#)?,
42
);
assert_eq!(
engine.eval::<INT>(r#"import "test" as test; test::test3("test");"#)?,
42
);
Ok(())
}
#[cfg(not(feature = "no_function"))]
#[test]
fn test_module_ast_namespace() -> Result<(), Box<EvalAltResult>> {
let script = r#"
fn foo(x) { x + 1 }
fn bar(x) { foo(x) }
"#;
let mut engine = Engine::new();
let ast = engine.compile(script)?;
let module = Module::eval_ast_as_new(Default::default(), &ast, &engine)?;
let mut resolver = StaticModuleResolver::new();
resolver.insert("testing", module);
engine.set_module_resolver(Some(resolver));
assert_eq!(
engine.eval::<INT>(r#"import "testing" as t; t::foo(41)"#)?,
42
);
assert_eq!(
engine.eval::<INT>(r#"import "testing" as t; t::bar(41)"#)?,
42
);
assert_eq!(
engine.eval::<INT>(r#"fn foo(x) { x - 1 } import "testing" as t; t::foo(41)"#)?,
42
);
assert_eq!(
engine.eval::<INT>(r#"fn foo(x) { x - 1 } import "testing" as t; t::bar(41)"#)?,
42
);
Ok(())
}
#[cfg(not(feature = "no_function"))]
#[test]
fn test_module_ast_namespace2() -> Result<(), Box<EvalAltResult>> {
use rhai::{Engine, Module, Scope};
const MODULE_TEXT: &str = r#"
fn run_function(function) {
function.call()
}
"#;
const SCRIPT: &str = r#"
import "test_module" as test;
fn foo() {
print("foo");
}
test::run_function(Fn("foo"));
"#;
let mut engine = Engine::new();
let module_ast = engine.compile(MODULE_TEXT)?;
let module = Module::eval_ast_as_new(Scope::new(), &module_ast, &engine)?;
let mut static_modules = rhai::module_resolvers::StaticModuleResolver::new();
static_modules.insert("test_module", module);
engine.set_module_resolver(Some(static_modules));
engine.consume(SCRIPT)?;
Ok(())
}