Enum SnapshotMode 

pub enum SnapshotMode {
    Compare,
    Update,
}

Whether a snapshot assertion compares against the stored file or rewrites it.

Variants

Compare

Compare actual against the stored snapshot. A missing file is a failure: the snapshot has to be created deliberately, in Update mode, not conjured by the first passing run.

Update

Write actual to the snapshot file, creating or overwriting it. This is how a new snapshot is recorded and how an intentional change is accepted.

Implementations

impl SnapshotMode

pub fn from_env() -> SnapshotMode

Update when the UPDATE_SNAPSHOTS environment variable is set to a non-empty value, Compare otherwise.

Trait Implementations

impl Clone for SnapshotMode

fn clone(&self) -> SnapshotMode

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SnapshotMode

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

Formats the value using the given formatter.

impl PartialEq for SnapshotMode

fn eq(&self, other: &SnapshotMode) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for SnapshotMode

impl Eq for SnapshotMode

impl StructuralPartialEq for SnapshotMode