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require "../spec_helper"
require "log"
private def s(value : Log::Severity)
value
end
private def io_logger(*, stdout : IO, config = nil, source : String = "")
builder = Log::Builder.new
backend = Log::IOBackend.new
backend.io = stdout
builder.bind("*", s(:info), backend)
builder.for(source)
end
describe Log::IOBackend do
it "creates with defaults" do
backend = Log::IOBackend.new
backend.io.should eq(STDOUT)
backend.formatter.should eq(Log::ShortFormat)
backend.dispatcher.should be_a(Log::AsyncDispatcher)
end
it "logs messages" do
IO.pipe do |r, w|
logger = io_logger(stdout: w)
logger.debug { "debug:skip" }
logger.info { "info:show" }
logger.level = s(:debug)
logger.debug { "debug:show" }
logger.level = s(:warn)
logger.debug { "debug:skip:again" }
logger.info { "info:skip" }
logger.error { "error:show" }
r.gets.should match(/info:show/)
r.gets.should match(/debug:show/)
r.gets.should match(/error:show/)
end
end
it "logs context" do
IO.pipe do |r, w|
logger = io_logger(stdout: w)
Log.context.clear
Log.with_context do
Log.context.set foo: "bar"
logger.info { "info:show" }
end
r.gets.should match(/info:show -- foo: "bar"/)
end
end
it "logs any object" do
IO.pipe do |r, w|
logger = io_logger(stdout: w)
logger.info { 12345 }
r.gets.should match(/12345/)
end
end
it "formats message" do
IO.pipe do |r, w|
logger = io_logger(stdout: w, source: "db.pool")
logger.warn { "message" }
r.gets(chomp: false).should match(/.+? WARN - db.pool: message\n/)
end
end
it "uses custom formatter" do
IO.pipe do |r, w|
logger = io_logger(stdout: w)
logger.backend.as(Log::IOBackend).formatter = Log::Formatter.new do |entry, io|
io << entry.severity.to_s[0].upcase << ": " << entry.message
end
logger.warn { "message" }
r.gets(chomp: false).should eq("W: message\n")
end
end
it "allows setting formatter in initializer" do
formatter = Log::Formatter.new { |_entry, io| io }
backend = Log::IOBackend.new(formatter: formatter)
log = Log.new("foo", backend, :info)
log.backend.should eq(backend)
end
it "yields message" do
IO.pipe do |r, w|
logger = io_logger(stdout: w, source: "db")
logger.error { "message" }
logger.fatal { "another message" }
r.gets(chomp: false).should match(/ERROR - db: message\n/)
r.gets(chomp: false).should match(/FATAL - db: another message\n/)
end
end
end
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