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ConnectionTestHarness

Struct ConnectionTestHarness 

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pub struct ConnectionTestHarness { /* private fields */ }
Available on crate features client and test-util and connector-hyper-0-14-x and wire-mock only.
Expand description

Running scripted endpoints with recorded connection events and mock DNS.

Endpoint tasks own all accepted connection tasks. Use ConnectionTestHarness::shutdown to stop and join them and to surface script failures. Dropping the harness requests shutdown and aborts endpoint tasks without waiting for their result.

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impl ConnectionTestHarness

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pub fn builder() -> HarnessBuilder

Creates a harness builder.

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pub fn endpoints(&self) -> &[TestEndpoint]

Returns all configured endpoints.

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pub fn endpoint(&self, index: usize) -> Option<&TestEndpoint>

Returns an endpoint by configuration order.

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pub fn port(&self) -> u16

Returns the TCP port shared by all endpoints.

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pub fn endpoint_url(&self) -> String

Returns an HTTP URL for the first endpoint.

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pub fn dns_resolver(&self) -> MockDnsResolver

Returns a clone of the configured DNS resolver.

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pub fn events(&self) -> Vec<ConnectionEvent>

Returns a snapshot of all events recorded so far.

Events remain ordered by when they were recorded across all endpoints.

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pub fn tcp_accepted_count(&self) -> usize

Returns the number of accepted TCP connections.

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pub fn tcp_accepted_by(&self, ip: IpAddr) -> usize

Returns the number of accepted TCP connections for ip.

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pub fn dns_lookup_count(&self) -> usize

Returns the number of DNS lookups.

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pub fn http_requests(&self) -> Vec<(String, Option<String>)>

Returns recorded HTTP request targets and Host headers.

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pub async fn wait_for_tcp_accepts( &self, expected: usize, timeout: Duration, ) -> Result<(), HarnessError>

Waits up to timeout for at least expected accepted TCP connections.

A background harness failure is returned immediately.

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pub async fn wait_for_http_requests( &self, expected: usize, timeout: Duration, ) -> Result<(), HarnessError>

Waits up to timeout for at least expected complete HTTP/1 requests.

A background harness failure is returned immediately.

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pub async fn wait_for_event<F>( &self, timeout: Duration, predicate: F, ) -> Result<(), HarnessError>
where F: Fn(&ConnectionEvent) -> bool,

Waits up to timeout until an event matches predicate.

A background harness failure is returned immediately.

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pub async fn shutdown(self) -> Result<(), HarnessError>

Requests shutdown, joins every endpoint and connection task, and reports failures.

Failures recorded before or during shutdown are combined into the returned HarnessError.

Drop any client holding connections to this harness before calling this. Shutdown cancels connection tasks promptly, including one parked in SocketScript::await_client_close; a script waiting there can only observe bytes the client should not have sent while the connection is still live, so shutting down with the client alive can mask that failure.

Trait Implementations§

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impl Debug for ConnectionTestHarness

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl Drop for ConnectionTestHarness

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fn drop(&mut self)

Executes the destructor for this type. Read more

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