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# frozen_string_literal: true
# Released under the MIT License.
# Copyright, 2018-2023, by Samuel Williams.
# Copyright, 2018, by Janko Marohnić.
require 'async/rspec/memory'
RSpec.describe Async::RSpec::Memory do
include_context Async::RSpec::Memory
it "should execute code in block" do
string = nil
expect do
string = String.new
end.to limit_allocations(String => 1)
expect(string).to_not be_nil
end
context "on supported platform", if: Async::RSpec::Memory::Trace.supported? do
it "should not exceed specified count limit" do
expect do
2.times{String.new}
end.to limit_allocations(String => 2)
expect do
2.times{String.new}
end.to limit_allocations.of(String, count: 2)
end
it "should fail if there are untracked allocations" do
expect do
expect do
Array.new
end.to limit_allocations
end.to raise_error(RSpec::Expectations::ExpectationNotMetError, /it was not specified/)
end
it "should exceed specified count limit" do
expect do
expect do
6.times{String.new}
end.to limit_allocations(String => 4)
end.to raise_error(RSpec::Expectations::ExpectationNotMetError, /expected exactly 4 instances/)
end if Async::RSpec::Memory::Trace.supported?
it "should be within specified count range" do
expect do
2.times{String.new}
end.to limit_allocations(String => 1..3)
expect do
2.times{String.new}
end.to limit_allocations.of(String, count: 1..3)
end
it "should exceed specified count range" do
expect do
expect do
6.times{String.new}
end.to limit_allocations(String => 1..3)
end.to raise_error(RSpec::Expectations::ExpectationNotMetError, /expected within 1..3 instances/)
end
it "should not exceed specified size limit" do
expect do
"a" * 100_000
end.to limit_allocations.of(String, size: 100_001)
end
it "should exceed specified size limit" do
expect do
expect do
"a" * 120_000
end.to limit_allocations(size: 100_000)
end.to raise_error(RSpec::Expectations::ExpectationNotMetError, /expected exactly 100000 bytes/)
end
end
end
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