b7cd003b93
* atoms in one test unit * factor out pointers test * factor structs into separate test unit * factor out arrays, flags * finally, separate into strings and ints
105 lines
3.0 KiB
Rust
105 lines
3.0 KiB
Rust
use proptest::prelude::*;
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use std::convert::TryFrom;
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use wiggle_runtime::{GuestError, GuestPtr};
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use wiggle_test::{impl_errno, HostMemory, MemArea, WasiCtx};
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wiggle_generate::from_witx!({
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witx: ["tests/flags.witx"],
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ctx: WasiCtx,
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});
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impl_errno!(types::Errno);
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impl flags::Flags for WasiCtx {
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fn configure_car(
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&mut self,
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old_config: types::CarConfig,
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other_config_ptr: GuestPtr<types::CarConfig>,
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) -> Result<types::CarConfig, types::Errno> {
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let other_config = *other_config_ptr.as_ref().map_err(|e| {
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eprintln!("old_config_ptr error: {}", e);
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types::Errno::InvalidArg
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})?;
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Ok(old_config ^ other_config)
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}
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}
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fn car_config_strat() -> impl Strategy<Value = types::CarConfig> {
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(1u8..=types::CarConfig::ALL_FLAGS.into())
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.prop_map(|v| {
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types::CarConfig::try_from(v).expect("invalid value for types::CarConfig flag")
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})
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.boxed()
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}
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#[derive(Debug)]
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struct ConfigureCarExercise {
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old_config: types::CarConfig,
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other_config: types::CarConfig,
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other_config_by_ptr: MemArea,
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return_ptr_loc: MemArea,
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}
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impl ConfigureCarExercise {
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pub fn strat() -> BoxedStrategy<Self> {
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(
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car_config_strat(),
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car_config_strat(),
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HostMemory::mem_area_strat(4),
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HostMemory::mem_area_strat(4),
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)
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.prop_map(
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|(old_config, other_config, other_config_by_ptr, return_ptr_loc)| Self {
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old_config,
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other_config,
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other_config_by_ptr,
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return_ptr_loc,
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},
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)
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.prop_filter("non-overlapping ptrs", |e| {
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MemArea::non_overlapping_set(&[&e.other_config_by_ptr, &e.return_ptr_loc])
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})
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.boxed()
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}
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pub fn test(&self) {
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let mut ctx = WasiCtx::new();
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let mut host_memory = HostMemory::new();
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let mut guest_memory = host_memory.guest_memory();
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// Populate input ptr
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*guest_memory
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.ptr_mut(self.other_config_by_ptr.ptr)
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.expect("ptr mut to CarConfig")
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.as_ref_mut()
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.expect("deref ptr mut to CarConfig") = self.other_config;
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let res = flags::configure_car(
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&mut ctx,
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&mut guest_memory,
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self.old_config.into(),
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self.other_config_by_ptr.ptr as i32,
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self.return_ptr_loc.ptr as i32,
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);
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assert_eq!(res, types::Errno::Ok.into(), "configure car errno");
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let res_config = *guest_memory
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.ptr::<types::CarConfig>(self.return_ptr_loc.ptr)
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.expect("ptr to returned CarConfig")
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.as_ref()
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.expect("deref to CarConfig value");
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assert_eq!(
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self.old_config ^ self.other_config,
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res_config,
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"returned CarConfig should be an XOR of inputs"
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);
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}
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}
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proptest! {
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#[test]
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fn configure_car(e in ConfigureCarExercise::strat()) {
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e.test()
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}
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}
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