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require File.expand_path('../setup', __FILE__)
module TestLogging
class TestNestedDiagnosticContext < Test::Unit::TestCase
include LoggingTestCase
def test_push_pop
ary = Logging.ndc.context
assert ary.empty?
assert_nil Logging.ndc.peek
Logging.ndc.push 'first context'
assert_equal 'first context', Logging.ndc.peek
Logging.ndc << 'second'
Logging.ndc << 'third'
assert_equal 'third', Logging.ndc.peek
assert_equal 3, ary.length
assert_equal 'third', Logging.ndc.pop
assert_equal 2, ary.length
assert_equal 'second', Logging.ndc.pop
assert_equal 1, ary.length
assert_equal 'first context', Logging.ndc.pop
assert ary.empty?
end
def test_push_block
ary = Logging.ndc.context
Logging.ndc.push('first context') do
assert_equal 'first context', Logging.ndc.peek
end
assert ary.empty?
Logging.ndc.push('first context') do
assert_raise(ZeroDivisionError) do
Logging.ndc.push('first context') { 1/0 }
end
end
assert ary.empty?
end
def test_clear
ary = Logging.ndc.context
assert ary.empty?
Logging.ndc << 'a' << 'b' << 'c' << 'd'
assert_equal 'd', Logging.ndc.peek
assert_equal 4, ary.length
Logging.ndc.clear
assert_nil Logging.ndc.peek
end
def test_thread_uniqueness
Logging.ndc << 'first' << 'second'
t = Thread.new {
sleep
Logging.ndc.clear
assert_nil Logging.ndc.peek
Logging.ndc << 42
assert_equal 42, Logging.ndc.peek
}
Thread.pass until t.status == 'sleep'
t.run
t.join
assert_equal 'second', Logging.ndc.peek
end
def test_thread_inheritance
Logging.ndc << 'first' << 'second'
t = Thread.new(Logging.ndc.context) { |ary|
sleep
assert_not_equal ary.object_id, Logging.ndc.context.object_id
assert_equal %w[first second], Logging.ndc.context
}
Thread.pass until t.status == 'sleep'
Logging.ndc << 'third'
t.run
t.join
end
end # class TestNestedDiagnosticContext
end # module TestLogging