EnvManager: Allows managing the test environment

In wordpredictor: Develop Text Prediction Models Based on N-Grams

Description

This class provides a method for creating directories in the tempdir folder for testing purposes. It also provides a method for reading files from the inst/extdata folder.

Super class

wordpredictor::Base -> EnvManager

Methods

Public methods

• EnvManager$new()

• EnvManager$get_data_fn()

• EnvManager$remove_files()

• EnvManager$td_env()

• EnvManager$cp_env()

• EnvManager$setup_env()

• EnvManager$clone()

Inherited methods

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Method new()

It initializes the current object. It simply calls the base class constructor.

Usage

EnvManager$new(rp = "../../", ve = 0)

Arguments

rp

The prefix for accessing the package root folder.

ve

The level of detail in the information messages.

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Method get_data_fn()

Checks if the given file exists. If it does not exist, then it tries to load the file from the inst/extdata data folder of the package. It throws an error if the file was not found. If the file exists, then the method simply returns the file name.

Usage

EnvManager$get_data_fn(fn, dfn)

Arguments

fn

The file name.

dfn

The name of the default file in the external data folder of the package.

Returns

The name of the file if it exists, or the full path to the default file.

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Method remove_files()

Removes all files in the given directory.

Usage

EnvManager$remove_files(dn)

Arguments

dn

The directory name.

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Method td_env()

Removes the ed folder created by the setup_env method. Also sets the R option, "ed" to NULL.

Usage

EnvManager$td_env(rf = F)

Arguments

rf

If the environment folder should be removed.

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Method cp_env()

Copies the ed folder created by the setup_env method to inst/extdata.

Usage

EnvManager$cp_env()

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Method setup_env()

Copies the given files from test folder to the environment folder.

Usage

EnvManager$setup_env(fns = c(), cf = NULL)

Arguments

fns

The list of test files to copy

cf

A custom environment folder. It is a path relative to the current directory. If not specified, then the tempdir function is used to generate the environment folder.

Returns

The list of folders that can be used during testing.

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Method clone()

The objects of this class are cloneable with this method.

Usage

EnvManager$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

wordpredictor documentation built on Jan. 4, 2022, 5:07 p.m.