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# frozen_string_literal: true
require 'fast_spec_helper'
RSpec.describe Gitlab::Utils::LogLimitedArray do
describe '.log_limited_array' do
context 'when the argument is not an array' do
it 'returns an empty array' do
expect(described_class.log_limited_array('aa')).to eq([])
end
end
context 'when the argument is an array' do
context 'when the array is under the limit' do
it 'returns the array unchanged' do
expect(described_class.log_limited_array(%w(a b))).to eq(%w(a b))
end
end
context 'when the array exceeds the limit' do
let(:long_array) do
half_limit = described_class::MAXIMUM_ARRAY_LENGTH / 2
['a' * half_limit, 'b' * half_limit, 'c']
end
context 'when no sentinel value is passed' do
it 'replaces arguments after the limit with an ellipsis string' do
expect(described_class.log_limited_array(long_array))
.to eq(long_array.take(1) + ['...'])
end
end
context 'when a sentinel value is passed' do
it 'replaces arguments after the limit with the sentinel' do
sentinel = { truncated: true }
expect(described_class.log_limited_array(long_array, sentinel: sentinel))
.to eq(long_array.take(1) + [sentinel])
end
end
end
context 'when the array contains arrays and hashes' do
it 'calculates the size based on the JSON representation' do
long_array = [
'a',
['b'] * 10,
{ c: 'c' * 10 },
# Each character in the array takes up four characters: the
# character itself, the two quotes, and the comma (closing
# square bracket for the last item)
['d'] * (described_class::MAXIMUM_ARRAY_LENGTH / 4),
'e'
]
expect(described_class.log_limited_array(long_array))
.to eq(long_array.take(3) + ['...'])
end
end
end
end
end
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