module FakeFS

FakeFS module

Public Class Methods

Source

# File lib/fakefs/base.rb, line 26
def activate!(io_mocks: false)
  Object.class_eval do
    remove_const(:Dir)
    remove_const(:File)
    remove_const(:FileTest)
    remove_const(:FileUtils)
    remove_const(:Pathname)

    const_set(:Dir,       FakeFS::Dir)
    const_set(:File,      FakeFS::File)
    const_set(:FileUtils, FakeFS::FileUtils)
    const_set(:FileTest,  FakeFS::FileTest)
    const_set(:Pathname,  FakeFS::Pathname)

    if io_mocks
      remove_const(:IO)
      const_set(:IO, ::FakeFS::IO)
    end

    ::FakeFS::Kernel.hijack!
  end

  @activated = true

  true
end

unconditionally activate

activated? ()

Source

# File lib/fakefs/base.rb, line 21
def activated?
  @activated ||= false
end

clear! ()

Source

# File lib/fakefs/base.rb, line 78
def clear!
  ::FakeFS::FileSystem.clear
end

unconditionally clear the fake filesystem

deactivate! ()

Source

# File lib/fakefs/base.rb, line 54
def deactivate!
  Object.class_eval do
    remove_const(:Dir)
    remove_const(:File)
    remove_const(:FileTest)
    remove_const(:FileUtils)
    remove_const(:IO)
    remove_const(:Pathname)

    const_set(:Dir,       RealDir)
    const_set(:File,      RealFile)
    const_set(:FileTest,  RealFileTest)
    const_set(:FileUtils, RealFileUtils)
    const_set(:IO,        RealIO)
    const_set(:Pathname,  RealPathname)
    ::FakeFS::Kernel.unhijack!
  end

  @activated = false

  true
end

unconditionally deactivate

with () { || ... }

Source

# File lib/fakefs/base.rb, line 89
def with
  if activated?
    yield
  else
    begin
      activate!
      yield
    ensure
      deactivate!
    end
  end
end

present the fake filesystem to the block

with_fresh (&block)

Source

# File lib/fakefs/base.rb, line 83
def with_fresh(&block)
  clear!
  with(&block)
end

present a fresh new fake filesystem to the block

without () { || ... }

Source

# File lib/fakefs/base.rb, line 103
def without
  if !activated?
    yield
  else
    begin
      deactivate!
      yield
    ensure
      activate!
    end
  end
end

present a non-fake filesystem to the block

Public Instance Methods

use_fakefs (describe_block, opts)

Source

# File lib/fakefs/spec_helpers.rb, line 38
def use_fakefs(describe_block, opts)
  describe_block.before opts[:with] do
    FakeFS.activate!
  end

  describe_block.after opts[:with] do
    FakeFS.deactivate!
    FakeFS::FileSystem.clear if opts[:with] == :each
  end
end