#[non_exhaustive]pub enum TestCaseScenarioStatus {
Canceled,
Error,
Fail,
Pass,
PassWithWarnings,
Pending,
Running,
Stopped,
Stopping,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against TestCaseScenarioStatus
, it is important to ensure
your code is forward-compatible. That is, if a match arm handles a case for a
feature that is supported by the service but has not been represented as an enum
variant in a current version of SDK, your code should continue to work when you
upgrade SDK to a future version in which the enum does include a variant for that
feature.
Here is an example of how you can make a match expression forward-compatible:
# let testcasescenariostatus = unimplemented!();
match testcasescenariostatus {
TestCaseScenarioStatus::Canceled => { /* ... */ },
TestCaseScenarioStatus::Error => { /* ... */ },
TestCaseScenarioStatus::Fail => { /* ... */ },
TestCaseScenarioStatus::Pass => { /* ... */ },
TestCaseScenarioStatus::PassWithWarnings => { /* ... */ },
TestCaseScenarioStatus::Pending => { /* ... */ },
TestCaseScenarioStatus::Running => { /* ... */ },
TestCaseScenarioStatus::Stopped => { /* ... */ },
TestCaseScenarioStatus::Stopping => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when testcasescenariostatus
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant TestCaseScenarioStatus::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
TestCaseScenarioStatus::Unknown(UnknownVariantValue("NewFeature".to_owned()))
and calling as_str
on it yields "NewFeature"
.
This match expression is forward-compatible when executed with a newer
version of SDK where the variant TestCaseScenarioStatus::NewFeature
is defined.
Specifically, when testcasescenariostatus
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on TestCaseScenarioStatus::NewFeature
also yielding "NewFeature"
.
Explicitly matching on the Unknown
variant should
be avoided for two reasons:
- The inner data
UnknownVariantValue
is opaque, and no further information can be extracted. - It might inadvertently shadow other intended match arms.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Canceled
Error
Fail
Pass
PassWithWarnings
Pending
Running
Stopped
Stopping
Unknown(UnknownVariantValue)
Unknown
. See the docs on this enum for the correct way to handle unknown variants.Unknown
contains new variants that have been added since this code was generated.
Implementations§
source§impl TestCaseScenarioStatus
impl TestCaseScenarioStatus
sourcepub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
pub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
Parses the enum value while disallowing unknown variants.
Unknown variants will result in an error.
Trait Implementations§
source§impl AsRef<str> for TestCaseScenarioStatus
impl AsRef<str> for TestCaseScenarioStatus
source§impl Clone for TestCaseScenarioStatus
impl Clone for TestCaseScenarioStatus
source§fn clone(&self) -> TestCaseScenarioStatus
fn clone(&self) -> TestCaseScenarioStatus
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for TestCaseScenarioStatus
impl Debug for TestCaseScenarioStatus
source§impl Display for TestCaseScenarioStatus
impl Display for TestCaseScenarioStatus
source§impl From<&str> for TestCaseScenarioStatus
impl From<&str> for TestCaseScenarioStatus
source§impl FromStr for TestCaseScenarioStatus
impl FromStr for TestCaseScenarioStatus
source§impl Hash for TestCaseScenarioStatus
impl Hash for TestCaseScenarioStatus
source§impl Ord for TestCaseScenarioStatus
impl Ord for TestCaseScenarioStatus
source§fn cmp(&self, other: &TestCaseScenarioStatus) -> Ordering
fn cmp(&self, other: &TestCaseScenarioStatus) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq for TestCaseScenarioStatus
impl PartialEq for TestCaseScenarioStatus
source§fn eq(&self, other: &TestCaseScenarioStatus) -> bool
fn eq(&self, other: &TestCaseScenarioStatus) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for TestCaseScenarioStatus
impl PartialOrd for TestCaseScenarioStatus
source§fn partial_cmp(&self, other: &TestCaseScenarioStatus) -> Option<Ordering>
fn partial_cmp(&self, other: &TestCaseScenarioStatus) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read moreimpl Eq for TestCaseScenarioStatus
impl StructuralPartialEq for TestCaseScenarioStatus
Auto Trait Implementations§
impl Freeze for TestCaseScenarioStatus
impl RefUnwindSafe for TestCaseScenarioStatus
impl Send for TestCaseScenarioStatus
impl Sync for TestCaseScenarioStatus
impl Unpin for TestCaseScenarioStatus
impl UnwindSafe for TestCaseScenarioStatus
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more