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Versions: 13
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Contents
require "enumerator"
require 'spec_helper'
describe FileReverseReader do
let(:instance) { FileReverseReader.new(io) }
let(:io) { File.open(logfile) }
describe "#each_line" do
let(:instance) { FileReverseReader.new(io, step) }
subject { instance.enum_for(:each_line) }
let(:logfile) { File.expand_path("./spec/support/fixtures/error0.log", Rails.root) }
context "read at once" do
context "small file (read at once)" do
let(:step) { File.size(logfile) }
it { subject.count.should == File.open(logfile).each_line.count }
it "reverse order" do
subject.to_a.should == File.open(logfile).each_line.to_a.map(&:strip).reverse
end
end
context "large file" do
let(:step) { 2 }
it { subject.count.should == File.open(logfile).each_line.count }
it "reverse order" do
subject.to_a.should == File.open(logfile).each_line.to_a.map(&:strip).reverse
end
end
end
end
describe "#binary_file?" do
let(:logfile) { File.expand_path("./tmp/log.log", Rails.root) }
before { File.open(logfile, "wb"){|f| f.write content} }
subject { instance.binary_file? }
context "contain ascii only" do
let(:content) { "ABCDE" }
it { should be_false }
end
context "contain non-ascii" do
let(:content) { "\x89NG" }
it { should be_true }
end
end
describe "#tail" do
let(:logfile) { File.expand_path("./tmp/log.log", Rails.root) }
let(:log_lines) { 100 }
before { File.open(logfile, "w"){|f| f.write("foo\n" * log_lines) } }
subject { instance.tail(count) }
context "2" do
let(:count) { 2 }
it { subject.to_a.size.should == count }
end
context "50" do
let(:count) { 50 }
it { subject.to_a.size.should == count }
end
context "over log lines" do
let(:count) { log_lines + 100 }
it { subject.to_a.size.should == log_lines }
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems