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feat(interface-types) Better error message when calling an exported function failed.

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This commit is contained in:
Ivan Enderlin 2019-09-20 14:55:37 +02:00
parent 56afb4da63
commit 8557e83ce6
1 changed files with 45 additions and 2 deletions
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47
lib/interface-types/src/instructions/interpreter.rs
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@ -126,8 +126,12 @@ where
}
Ok(())
},
Err(_) => Err("failed".into()),
}
Err(_) => Err(format!(
"`{}` failed when calling the exported function `{}`.",
instruction_name,
export_name
))
}
}
None => Err(format!(
@ -402,4 +406,43 @@ mod tests {
String::from(r#"`call-export "sum"` cannot call the exported function `sum` because the value types in the stack mismatch the function signature (expects [I32, I32])."#)
);
}
#[test]
fn test_interpreter_call_export_failed_when_calling() {
let interpreter: Interpreter<Instance, Export> = (&vec![
Instruction::ArgumentGet(1),
Instruction::ArgumentGet(0),
Instruction::CallExport("sum"),
])
.try_into()
.unwrap();
let invocation_inputs = vec![Value::I32(3), Value::I32(4)];
let instance = Instance {
exports: {
let mut hashmap = HashMap::new();
hashmap.insert(
"sum".into(),
Export {
inputs: vec![Type::I32, Type::I32],
outputs: vec![Type::I32],
function: |_| Err(()),
// ^^^^^^ function fails
},
);
hashmap
},
};
let run = interpreter.run(&invocation_inputs, &instance);
assert!(run.is_err());
let error = run.unwrap_err();
assert_eq!(
error,
String::from(r#"`call-export "sum"` failed when calling the exported function `sum`."#)
);
}
}