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#
# Copyright:: Copyright (c) Chef Software Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
require "spec_helper"
RSpec.describe ChefUtils::DSL::Which do
class WhichTestClass
include ChefUtils::DSL::Which
end
let(:test) { WhichTestClass.new }
describe "#which" do
def self.test_which(description, *args, path: ["/dir1", "/dir2" ].join(File::PATH_SEPARATOR), finds: nil, others: [], directory: false, &block)
it description do
# stub the ENV['PATH']
expect(ENV).to receive(:[]).with("PATH").and_return(path)
# most files should not be found
allow(File).to receive(:executable?).and_return(false)
allow(File).to receive(:directory?).and_return(false)
# stub the expectation
expect(File).to receive(:executable?).with(finds).and_return(true) if finds
# if the file we find is a directory
expect(File).to receive(:directory?).with(finds).and_return(true) if finds && directory
# allow for stubbing other paths to exist that we should not find
others.each do |other|
allow(File).to receive(:executable?).with(other).and_return(true)
end
# setup the actual expectation on the return value
if finds && !directory
expect(test.which(*args, &block)).to eql(finds)
else
expect(test.which(*args, &block)).to eql(false)
end
end
end
context "simple usage" do
test_which("returns false when it does not find anything", "foo1")
["/dir1", "/dir2" ].each do |dir|
test_which("finds `foo1` in #{dir} when it is stubbed", "foo1", finds: "#{dir}/foo1")
end
test_which("does not find an executable directory", "foo1", finds: "/dir1/foo1", directory: true)
end
context "with an array of args" do
test_which("finds the first arg", "foo1", "foo2", finds: "/dir2/foo1")
test_which("finds the second arg", "foo1", "foo2", finds: "/dir2/foo2")
test_which("finds the first arg when there's both", "foo1", "foo2", finds: "/dir2/foo1", others: [ "/dir1/foo2" ])
test_which("and the directory order can be reversed", "foo1", "foo2", finds: "/dir1/foo1", others: [ "/dir2/foo2" ])
test_which("or be the same", "foo1", "foo2", finds: "/dir1/foo1", others: [ "/dir1/foo2" ])
end
context "with a block" do
test_which("doesnt find it if its false", "foo1", others: [ "/dir1/foo1" ]) do |f|
false
end
test_which("finds it if its true", "foo1", finds: "/dir1/foo1") do |f|
true
end
test_which("passes in the filename as the arg", "foo1", finds: "/dir1/foo1") do |f|
raise "bad arg to block" unless f == "/dir1/foo1"
true
end
test_which("arrays with blocks", "foo1", "foo2", finds: "/dir2/foo1", others: [ "/dir1/foo2" ]) do |f|
raise "bad arg to block" unless f == "/dir2/foo1" || f == "/dir1/foo2"
true
end
end
context "nil path" do
test_which("returns false when it does not find anything", "foo1", path: nil)
end
end
describe "#where" do
def self.test_where(description, *args, path: ["/dir1", "/dir2" ].join(File::PATH_SEPARATOR), finds: [], others: [], &block)
it description do
# stub the ENV['PATH']
expect(ENV).to receive(:[]).with("PATH").and_return(path)
# most files should not be found
allow(File).to receive(:executable?).and_return(false)
allow(File).to receive(:directory?).and_return(false)
# allow for stubbing other paths to exist that we should not return
others.each do |other|
allow(File).to receive(:executable?).with(other).and_return(true)
end
# stub the expectation
finds.each do |path|
expect(File).to receive(:executable?).with(path).and_return(true)
end
# setup the actual expectation on the return value
expect(test.where(*args, &block)).to eql(finds)
end
end
context "simple usage" do
test_where("returns empty array when it doesn't find anything", "foo1")
["/dir1", "/dir2" ].each do |dir|
test_where("finds `foo1` in #{dir} when it is stubbed", "foo1", finds: [ "#{dir}/foo1" ])
end
test_where("finds `foo1` in all directories", "foo1", finds: [ "/dir1/foo1", "/dir2/foo1" ])
end
context "with an array of args" do
test_where("finds the first arg", "foo1", "foo2", finds: [ "/dir2/foo1" ])
test_where("finds the second arg", "foo1", "foo2", finds: [ "/dir2/foo2" ])
test_where("finds foo1 before foo2 if the dirs are reversed", "foo1", "foo2", finds: [ "/dir1/foo1", "/dir2/foo2" ])
test_where("finds them both in the same directory", "foo1", "foo2", finds: [ "/dir1/foo1", "/dir1/foo2" ])
test_where("finds foo2 first if they're reversed", "foo2", "foo1", finds: [ "/dir1/foo2", "/dir1/foo1" ])
end
context "with a block do" do
test_where("finds foo1 and foo2 if they exist and the block is true", "foo1", "foo2", finds: [ "/dir1/foo2", "/dir2/foo2" ]) do
true
end
test_where("does not finds foo1 and foo2 if they exist and the block is false", "foo1", "foo2", others: [ "/dir1/foo2", "/dir2/foo2" ]) do
false
end
end
context "with a nil path" do
test_where("returns empty array when it doesn't find anything", "foo1", path: nil)
end
end
end
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