Struct Watcher 

pub struct Watcher {
    pub called_id: bool,
    pub called_time: bool,
    pub called_balance: bool,
    pub called_caller: bool,
    pub called_msg_cycles_available: bool,
    pub called_msg_cycles_accept: bool,
    pub called_msg_cycles_refunded: bool,
    pub called_stable_store: bool,
    pub called_stable_restore: bool,
    pub called_set_certified_data: bool,
    pub called_data_certificate: bool,
    /* private fields */
}

A watcher can be used to inspect the calls made in a call.

Fields

called_id: bool

True if the context.id() was called during execution.

called_time: bool

True if the context.time() was called during execution.

called_balance: bool

True if the context.balance() was called during execution.

called_caller: bool

True if the context.caller() was called during execution.

called_msg_cycles_available: bool

True if the context.msg_cycles_available() was called during execution.

called_msg_cycles_accept: bool

True if the context.msg_cycles_accept() was called during execution.

called_msg_cycles_refunded: bool

True if the context.msg_cycles_refunded() was called during execution.

called_stable_store: bool

True if the context.stable_store() was called during execution.

called_stable_restore: bool

True if the context.stable_restore() was called during execution.

called_set_certified_data: bool

True if the context.set_certified_data() was called during execution.

called_data_certificate: bool

True if the context.data_certificate() was called during execution.

Implementations

impl Watcher

pub fn record_call(&mut self, call: WatcherCall)

Push a call to the call history of the watcher.

pub fn call_count(&self) -> usize

Return the number of calls made during the last execution.

pub fn cycles_consumed(&self) -> u64

Returns the total amount of cycles consumed in inter-canister calls.

pub fn cycles_refunded(&self) -> u64

Returns the total amount of cycles refunded in inter-canister calls.

pub fn cycles_sent(&self) -> u64

Returns the total amount of cycles sent in inter-canister calls, not deducing the refunded amounts.

pub fn get_call(&self, n: usize) -> &WatcherCall

Return the n-th call that took place during the execution.

pub fn is_method_called(&self, method_name: &str) -> bool

Returns true if the given method was called during the execution.

pub fn is_canister_called(&self, canister_id: &Principal) -> bool

Returns true if the given canister was called during the execution.

pub fn is_called(&self, canister_id: &Principal, method_name: &str) -> bool

Returns true if the given method was called.

pub fn is_modified<T: 'static>(&self) -> bool

Returns true if the given storage item was accessed in a mutable way during the execution. This method tracks calls to:

• context.store()
• context.get_mut()
• context.delete()

Trait Implementations

impl Default for Watcher

fn default() -> Self

Returns the “default value” for a type.