pub fn field<K>(name: K) -> ExpectedField
Expand description
Construct a new ExpectedField
.
For details on how to set the value of the expected field and
how to expect multiple fields, see the field
module and the
ExpectedField
and ExpectedFields
structs.
span, see the span
module and the ExpectedSpan
and
NewSpan
structs.
§Examples
use tracing_mock::{collector, expect};
let event = expect::event()
.with_fields(expect::field("field.name").with_value(&"field_value"));
let (collector, handle) = collector::mock()
.event(event)
.run_with_handle();
tracing::collect::with_default(collector, || {
tracing::info!(field.name = "field_value");
});
handle.assert_finished();
A different field value will cause the test to fail:
ⓘ
use tracing_mock::{collector, expect};
let event = expect::event()
.with_fields(expect::field("field.name").with_value(&"field_value"));
let (collector, handle) = collector::mock()
.event(event)
.run_with_handle();
tracing::collect::with_default(collector, || {
tracing::info!(field.name = "different_field_value");
});
handle.assert_finished();