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use crate::artifact::JsonTrace;
use crate::{Error, TestError};
use serde::de::DeserializeOwned;
use std::fmt::Debug;
pub trait StepRunner<Step: DeserializeOwned + Debug + Clone> {
fn initial_step(&mut self, step: Step) -> Result<(), String>;
fn next_step(&mut self, step: Step) -> Result<(), String>;
fn run(&mut self, trace: JsonTrace) -> Result<(), TestError> {
let steps = trace
.into_iter()
.map(|step| {
serde_json::from_value(step)
.map_err(|e| TestError::Modelator(Error::JsonParseError(e.to_string())))
})
.collect::<Result<Vec<Step>, _>>()?;
for (i, step) in steps.clone().into_iter().enumerate() {
let result = if i == 0 {
self.initial_step(step)
} else {
self.next_step(step)
};
if let Err(message) = result {
return Err(TestError::FailedTest {
message,
location: "".to_string(),
test: format!("{:?}", steps),
system: "".to_string(),
});
}
}
Ok(())
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::test_util::NumberSystem;
use serde::Deserialize;
#[derive(Debug, Clone, Deserialize)]
#[serde(rename_all = "camelCase")]
struct NumbersStep {
a: u64,
b: u64,
action: Action,
action_outcome: String,
}
#[derive(Debug, Clone, Deserialize)]
enum Action {
None,
IncreaseA,
IncreaseB,
}
impl StepRunner<NumbersStep> for NumberSystem {
fn initial_step(&mut self, step: NumbersStep) -> Result<(), String> {
self.a = step.a;
self.b = step.b;
self.recalculate();
Ok(())
}
fn next_step(&mut self, step: NumbersStep) -> Result<(), String> {
let res = match step.action {
Action::None => Ok(()),
Action::IncreaseA => self.increase_a(1),
Action::IncreaseB => self.increase_b(2),
};
let outcome = match res {
Ok(()) => "OK".to_string(),
Err(s) => s,
};
assert_eq!(outcome, step.action_outcome);
assert_eq!(self.a, step.a);
assert_eq!(self.b, step.b);
Ok(())
}
}
#[test]
fn test_step_runner() {
let tla_tests_file = "tests/integration/resource/NumbersAMaxBMinTest.tla";
let tla_config_file = "tests/integration/resource/Numbers.cfg";
let runtime = crate::ModelatorRuntime::default();
let mut runner = NumberSystem::default();
assert!(runtime
.run_tla_steps(tla_tests_file, tla_config_file, &mut runner)
.map_or_else(|_| false, |v| v.no_test_failed()),);
}
}