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require 'spec_helper'
require 'puppet/pops'
describe 'Puppet::Pops::PuppetStack' do
class StackTraceTest
def get_stacktrace
Puppet::Pops::PuppetStack.stacktrace
end
def get_top_of_stack
Puppet::Pops::PuppetStack.top_of_stack
end
def one_level
Puppet::Pops::PuppetStack.stack("one_level.pp", 1234, self, :get_stacktrace, [])
end
def one_level_top
Puppet::Pops::PuppetStack.stack("one_level.pp", 1234, self, :get_top_of_stack, [])
end
def two_levels
Puppet::Pops::PuppetStack.stack("two_levels.pp", 1237, self, :level2, [])
end
def two_levels_top
Puppet::Pops::PuppetStack.stack("two_levels.pp", 1237, self, :level2_top, [])
end
def level2
Puppet::Pops::PuppetStack.stack("level2.pp", 1240, self, :get_stacktrace, [])
end
def level2_top
Puppet::Pops::PuppetStack.stack("level2.pp", 1240, self, :get_top_of_stack, [])
end
def gets_block(a, &block)
block.call(a)
end
def gets_args_and_block(a, b, &block)
block.call(a, b)
end
def with_nil_file
Puppet::Pops::PuppetStack.stack(nil, 1250, self, :get_stacktrace, [])
end
def with_empty_string_file
Puppet::Pops::PuppetStack.stack('', 1251, self, :get_stacktrace, [])
end
end
it 'returns an empty array from stacktrace when there is nothing on the stack' do
expect(Puppet::Pops::PuppetStack.stacktrace).to eql([])
end
context 'full stacktrace' do
it 'returns a one element array with file, line from stacktrace when there is one entry on the stack' do
expect(StackTraceTest.new.one_level).to eql([['one_level.pp', 1234]])
end
it 'returns an array from stacktrace with information about each level with oldest frame last' do
expect(StackTraceTest.new.two_levels).to eql([['level2.pp', 1240], ['two_levels.pp', 1237]])
end
it 'returns an empty array from top_of_stack when there is nothing on the stack' do
expect(Puppet::Pops::PuppetStack.top_of_stack).to eql([])
end
end
context 'top of stack' do
it 'returns a one element array with file, line from top_of_stack when there is one entry on the stack' do
expect(StackTraceTest.new.one_level_top).to eql(['one_level.pp', 1234])
end
it 'returns newest entry from top_of_stack' do
expect(StackTraceTest.new.two_levels_top).to eql(['level2.pp', 1240])
end
it 'accepts file to be nil' do
expect(StackTraceTest.new.with_nil_file).to eql([['unknown', 1250]])
end
end
it 'accepts file to be empty_string' do
expect(StackTraceTest.new.with_empty_string_file).to eql([['unknown', 1251]])
end
it 'stacktrace is empty when call has returned' do
StackTraceTest.new.two_levels
expect(Puppet::Pops::PuppetStack.stacktrace).to eql([])
end
it 'allows passing a block to the stack call' do
expect(Puppet::Pops::PuppetStack.stack("test.pp", 1, StackTraceTest.new, :gets_block, ['got_it']) {|x| x }).to eql('got_it')
end
it 'allows passing multiple variables and a block' do
expect(
Puppet::Pops::PuppetStack.stack("test.pp", 1, StackTraceTest.new, :gets_args_and_block, ['got_it', 'again']) {|x, y| [x,y].join(' ')}
).to eql('got_it again')
end
end
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