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Test TrucateMessage filter with Proc selectors and custom callables

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This commit is contained in:
Holger Just 2017-09-23 10:48:03 +02:00
parent f8d8c040d5
commit 402f754736
1 changed files with 15 additions and 7 deletions
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22
spec/rackstash/filters/truncate_message_spec.rb
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@ -16,6 +16,14 @@ describe Rackstash::Filters::TruncateMessage do
let(:messages) { ['some long message', 'sweet middle text', 'final message'] }
let(:event) { { 'message' => messages } }
def callable(&block)
Class.new do
define_method(:call) do |message|
block.call(message)
end
end.new
end
describe '#initialize' do
it 'verifies that a valid cut value is given' do
expect { described_class.new(42, cut: 'foo') }.to raise_error(ArgumentError)
@ -28,22 +36,22 @@ describe Rackstash::Filters::TruncateMessage do
describe '#call' do
context 'with selectors' do
it 'calls all selectors' do
selector_1 = instance_double('Proc')
selector_2 = instance_double('Proc')
selector_1 = ->(message) { true }
selector_2 = callable { true }
args[:selectors] = [selector_1, selector_2]
expect(selector_1).to receive(:call).exactly(3).times.and_return(true)
expect(selector_2).to receive(:call).exactly(3).times.and_return(true)
# selector_1 is a proc and is thus passed directly as a block to select!
expect(selector_2).to receive(:call).exactly(messages.count)
filter.call(event)
end
it 'stops on goal' do
selector_1 = instance_double('Proc')
selector_2 = instance_double('Proc')
selector_1 = callable { false }
selector_2 = callable { true }
args[:selectors] = [selector_1, selector_2]
expect(selector_1).to receive(:call).exactly(3).times.and_return(false)
expect(selector_1).to receive(:call).exactly(3).times.and_call_original
expect(selector_2).not_to receive(:call)
filter.call(event)