Method: Rails::Generators::Testing::Assertions#assert_migration

Defined in:
railties/lib/rails/generators/testing/assertions.rb

#assert_migration(relative, *contents, &block) ⇒ Object

Asserts a given migration exists. You need to supply an absolute path or a path relative to the configured destination:

assert_migration "db/migrate/create_products.rb"

This method manipulates the given path and tries to find any migration which matches the migration name. For example, the call above is converted to:

assert_file "db/migrate/003_create_products.rb"

Consequently, assert_migration accepts the same arguments has assert_file.

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# File 'railties/lib/rails/generators/testing/assertions.rb', line 62

def assert_migration(relative, *contents, &block)
  file_name = migration_file_name(relative)
  assert file_name, "Expected migration #{relative} to exist, but was not found"
  assert_file file_name, *contents, &block
end