Module: SnapshotInspector::Test::TestUnitHelpers

Extended by:
ActiveSupport::Concern
Defined in:
lib/snapshot_inspector/test/test_unit_helpers.rb

Instance Method Summary collapse

Instance Method Details

#take_snapshot(snapshotee) ⇒ Object

Takes a snapshot of a given snapshotee.

A snapshotee can be an instance of ActionDispatch::TestResponse or ActionMailer::MessageDelivery.

take_snapshot needs to be called after the snapshotee object becomes available for inspection in the lifecycle of the test (e.g. integration or mailer test). You can take one or more snapshots in a single test case.

Snapshots are taken only when explicitly enabled with a flag --take-snapshots or when an environment variable TAKE_SNAPSHOTS=1 is set.

E.g. bin/rails test --take-snapshots

Parameters:

  • snapshotee (ActionDispatch::TestResponse, ActionMailer::MessageDelivery)

Returns:

  • SnapshotInspector::Snapshot



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# File 'lib/snapshot_inspector/test/test_unit_helpers.rb', line 21

def take_snapshot(snapshotee)
  return unless SnapshotInspector.configuration.snapshot_taking_enabled

  increment_take_snapshot_counter_scoped_by_test

  SnapshotInspector::Snapshot.persist(
    snapshotee: snapshotee,
    context: {
      test_framework: :test_unit,
      method_name: method_name,
      source_location: method(method_name).source_location,
      test_case_name: self.class.to_s,
      take_snapshot_index: _take_snapshot_counter - 1
    }
  )
end