65 lines
1.5 KiB
Rust
65 lines
1.5 KiB
Rust
use rhai::{Engine, EvalAltResult, ParseErrorType, Scope, INT};
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#[test]
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fn test_constant() -> Result<(), Box<EvalAltResult>> {
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let engine = Engine::new();
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assert_eq!(engine.eval::<INT>("const x = 123; x")?, 123);
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assert!(matches!(
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*engine
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.eval::<INT>("const x = 123; x = 42;")
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.expect_err("expects error"),
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EvalAltResult::ErrorParsing(ParseErrorType::AssignmentToConstant(x), _) if x == "x"
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));
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#[cfg(not(feature = "no_index"))]
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assert!(matches!(
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*engine.consume("const x = [1, 2, 3, 4, 5]; x[2] = 42;").expect_err("expects error"),
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EvalAltResult::ErrorParsing(ParseErrorType::AssignmentToConstant(x), _) if x == "x"
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));
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Ok(())
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}
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#[test]
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fn test_constant_scope() -> Result<(), Box<EvalAltResult>> {
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let engine = Engine::new();
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let mut scope = Scope::new();
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scope.push_constant("x", 42 as INT);
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assert!(matches!(
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*engine.consume_with_scope(&mut scope, "x = 1").expect_err("expects error"),
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EvalAltResult::ErrorAssignmentToConstant(x, _) if x == "x"
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));
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Ok(())
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}
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#[test]
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fn test_var_is_def() -> Result<(), Box<EvalAltResult>> {
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let engine = Engine::new();
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assert!(engine.eval::<bool>(
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r#"
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let x = 42;
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is_def_var("x")
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"#
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)?);
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assert!(!engine.eval::<bool>(
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r#"
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let x = 42;
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is_def_var("y")
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"#
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)?);
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assert!(engine.eval::<bool>(
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r#"
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const x = 42;
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is_def_var("x")
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"#
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)?);
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Ok(())
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}
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