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require 'spec_helper'
describe Fission::Command::SnapshotRevert do
include_context 'command_setup'
before do
@target_vm = ['foo']
Fission::VM.stub(:new).and_return(@vm_mock)
@snap_revert_response_mock = double('snap_revert_response')
@vm_mock.stub(:name).and_return(@target_vm.first)
end
describe 'command_name' do
it 'should return the pretty command name' do
Fission::Command::SnapshotRevert.new.command_name.should == 'snapshot revert'
end
end
describe 'execute' do
subject { Fission::Command::SnapshotRevert }
[ [], ['foo'], ['--bar'] ].each do |args|
it_should_not_accept_arguments_of args, 'snapshot revert'
end
it "should output an error and the help when no snapshot name is passed in" do
Fission::Command::SnapshotRevert.should_receive(:help)
command = Fission::Command::SnapshotRevert.new @target_vm
lambda { command.execute }.should raise_error SystemExit
@string_io.string.should match /Incorrect arguments for snapshot revert command/
end
it 'should revert to the snapshot with the provided name' do
@snap_revert_response_mock.stub_as_successful
@vm_mock.should_receive(:revert_to_snapshot).with('snap_1').
and_return(@snap_revert_response_mock)
command = Fission::Command::SnapshotRevert.new @target_vm << 'snap_1'
command.execute
@string_io.string.should match /Reverting to snapshot 'snap_1'/
@string_io.string.should match /Reverted to snapshot 'snap_1'/
end
it 'should output an error and exit if there was an error reverting to the snapshot' do
@snap_revert_response_mock.stub_as_unsuccessful
@vm_mock.should_receive(:revert_to_snapshot).with('snap_1').
and_return(@snap_revert_response_mock)
command = Fission::Command::SnapshotRevert.new @target_vm << 'snap_1'
lambda { command.execute }.should raise_error SystemExit
@string_io.string.should match /Reverting to snapshot 'snap_1'/
@string_io.string.should match /There was an error reverting to the snapshot.+it blew up.+/m
end
end
describe 'help' do
it 'should output info for this command' do
output = Fission::Command::SnapshotRevert.help
output.should match /fission snapshot revert TARGET_VM TARGET_SNAPSHOT/
end
end
end
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