namespaces: Create namespace environments

In testextra: Extract Test Blocks

Description

Create and manipulate namespace and test package environments.

Usage

new_namespace_env(name, path = file.path(tempdir()),
  import = "methods")

new_pkg_environment(name = "test package environment", ...,
  register = FALSE)

register_namespace(ns)

unregister_namespace(ns)

is_namespace_registered(ns)

Arguments

name	The name of the environment
path	An optional path.
import	Package to include in the imports.
...	Arguments passed on to new_namespace_env name The name of the environment path An optional path. import Package to include in the imports.
register	Should the package namespace be registered?
ns	a namespace environment or a character name of a namespace.

Functions

• new_namespace_env: Create a new namespace environment

• new_pkg_environment: Create a package environment. All package environments are namespaces but not all namespaces qualify as package environments.

• register_namespace: Register a namespace

• unregister_namespace: Remove a namespace from the registry

• is_namespace_registered: Check if a namespace is registered

Examples

ns <- new_namespace_env('my namespace')
isNamespace(ns)
environmentName(ns)
packageName(ns) # not a package

pkg <- new_pkg_environment("myPackage")
isNamespace(pkg)
environmentName(pkg)
packageName(pkg)             # now a package
is_namespace_registered(pkg) # but not registered
## Not run: 
asNamespace("myPackage")     # so this WILL NOT work.

## End(Not run)

register_namespace(pkg)
is_namespace_registered(pkg) # now registered
asNamespace("myPackage")     # so this WILL work.

unregister_namespace(pkg)
is_namespace_registered(pkg) # now unregistered
isNamespace(pkg)             # but still a namespace

testextra documentation built on Dec. 18, 2019, 9:38 a.m.