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Contents
require "imap/backup/serializer/mbox_enumerator"
describe Imap::Backup::Serializer::MboxEnumerator do
subject { described_class.new(mbox_pathname) }
let(:mbox_pathname) { "/mbox/pathname" }
let(:mbox_file) { instance_double(File) }
let(:lines) { message1 + message2 + [nil] }
let(:message1) do
[
"From Frida\r\n",
"Hello\r\n"
]
end
let(:message2) do
[
"From John\r\n",
"Hi\r\n"
]
end
before do
allow(File).to receive(:open).and_call_original
allow(File).to receive(:open).with(mbox_pathname, "rb").and_yield(mbox_file)
allow(mbox_file).to receive(:gets).and_return(*lines)
end
describe "#each" do
it "reads files as binary" do
expect(File).to receive(:open).with(mbox_pathname, "rb")
subject.each {}
end
it "yields messages" do
expect { |b| subject.each(&b) }.
to yield_successive_args(message1.join, message2.join)
end
context "without a block" do
it "returns an Enumerator" do
expect(subject.each).to be_a(Enumerator)
end
end
end
end
Version data entries
35 entries across 35 versions & 1 rubygems