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-rw-r--r--test/unit/test_tee_input.rb229
1 files changed, 229 insertions, 0 deletions
diff --git a/test/unit/test_tee_input.rb b/test/unit/test_tee_input.rb
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+# -*- encoding: binary -*-
+
+require 'test/unit'
+require 'digest/sha1'
+require 'unicorn'
+
+class TestTeeInput < Test::Unit::TestCase
+
+  def setup
+    @rs = $/
+    @env = {}
+    @rd, @wr = IO.pipe
+    @rd.sync = @wr.sync = true
+    @start_pid = $$
+  end
+
+  def teardown
+    return if $$ != @start_pid
+    $/ = @rs
+    @rd.close rescue nil
+    @wr.close rescue nil
+    begin
+      Process.wait
+    rescue Errno::ECHILD
+      break
+    end while true
+  end
+
+  def test_gets_long
+    init_parser("hello", 5 + (4096 * 4 * 3) + "#$/foo#$/".size)
+    ti = Unicorn::TeeInput.new(@rd, @env, @parser, @buf)
+    status = line = nil
+    pid = fork {
+      @rd.close
+      3.times { @wr.write("ffff" * 4096) }
+      @wr.write "#$/foo#$/"
+      @wr.close
+    }
+    @wr.close
+    assert_nothing_raised { line = ti.gets }
+    assert_equal(4096 * 4 * 3 + 5 + $/.size, line.size)
+    assert_equal("hello" << ("ffff" * 4096 * 3) << "#$/", line)
+    assert_nothing_raised { line = ti.gets }
+    assert_equal "foo#$/", line
+    assert_nil ti.gets
+    assert_nothing_raised { pid, status = Process.waitpid2(pid) }
+    assert status.success?
+  end
+
+  def test_gets_short
+    init_parser("hello", 5 + "#$/foo".size)
+    ti = Unicorn::TeeInput.new(@rd, @env, @parser, @buf)
+    status = line = nil
+    pid = fork {
+      @rd.close
+      @wr.write "#$/foo"
+      @wr.close
+    }
+    @wr.close
+    assert_nothing_raised { line = ti.gets }
+    assert_equal("hello#$/", line)
+    assert_nothing_raised { line = ti.gets }
+    assert_equal "foo", line
+    assert_nil ti.gets
+    assert_nothing_raised { pid, status = Process.waitpid2(pid) }
+    assert status.success?
+  end
+
+  def test_small_body
+    init_parser('hello')
+    ti = Unicorn::TeeInput.new(@rd, @env, @parser, @buf)
+    assert_equal 0, @parser.content_length
+    assert @parser.body_eof?
+    assert_equal StringIO, ti.instance_eval { @tmp.class }
+    assert_equal 0, ti.instance_eval { @tmp.pos }
+    assert_equal 5, ti.size
+    assert_equal 'hello', ti.read
+    assert_equal '', ti.read
+    assert_nil ti.read(4096)
+  end
+
+  def test_read_with_buffer
+    init_parser('hello')
+    ti = Unicorn::TeeInput.new(@rd, @env, @parser, @buf)
+    buf = ''
+    rv = ti.read(4, buf)
+    assert_equal 'hell', rv
+    assert_equal 'hell', buf
+    assert_equal rv.object_id, buf.object_id
+    assert_equal 'o', ti.read
+    assert_equal nil, ti.read(5, buf)
+    assert_equal 0, ti.rewind
+    assert_equal 'hello', ti.read(5, buf)
+    assert_equal 'hello', buf
+  end
+
+  def test_big_body
+    init_parser('.' * Unicorn::Const::MAX_BODY << 'a')
+    ti = Unicorn::TeeInput.new(@rd, @env, @parser, @buf)
+    assert_equal 0, @parser.content_length
+    assert @parser.body_eof?
+    assert_kind_of File, ti.instance_eval { @tmp }
+    assert_equal 0, ti.instance_eval { @tmp.pos }
+    assert_equal Unicorn::Const::MAX_BODY + 1, ti.size
+  end
+
+  def test_read_in_full_if_content_length
+    a, b = 300, 3
+    init_parser('.' * b, 300)
+    assert_equal 300, @parser.content_length
+    ti = Unicorn::TeeInput.new(@rd, @env, @parser, @buf)
+    pid = fork {
+      @wr.write('.' * 197)
+      sleep 1 # still a *potential* race here that would make the test moot...
+      @wr.write('.' * 100)
+    }
+    assert_equal a, ti.read(a).size
+    _, status = Process.waitpid2(pid)
+    assert status.success?
+    @wr.close
+  end
+
+  def test_big_body_multi
+    init_parser('.', Unicorn::Const::MAX_BODY + 1)
+    ti = Unicorn::TeeInput.new(@rd, @env, @parser, @buf)
+    assert_equal Unicorn::Const::MAX_BODY, @parser.content_length
+    assert ! @parser.body_eof?
+    assert_kind_of File, ti.instance_eval { @tmp }
+    assert_equal 0, ti.instance_eval { @tmp.pos }
+    assert_equal 1, ti.instance_eval { @tmp.size }
+    assert_equal Unicorn::Const::MAX_BODY + 1, ti.size
+    nr = Unicorn::Const::MAX_BODY / 4
+    pid = fork {
+      @rd.close
+      nr.times { @wr.write('....') }
+      @wr.close
+    }
+    @wr.close
+    assert_equal '.', ti.read(1)
+    assert_equal Unicorn::Const::MAX_BODY + 1, ti.size
+    nr.times {
+      assert_equal '....', ti.read(4)
+      assert_equal Unicorn::Const::MAX_BODY + 1, ti.size
+    }
+    assert_nil ti.read(1)
+    status = nil
+    assert_nothing_raised { pid, status = Process.waitpid2(pid) }
+    assert status.success?
+  end
+
+  def test_chunked
+    @parser = Unicorn::HttpParser.new
+    @buf = "POST / HTTP/1.1\r\n" \
+           "Host: localhost\r\n" \
+           "Transfer-Encoding: chunked\r\n" \
+           "\r\n"
+    assert_equal @env, @parser.headers(@env, @buf)
+    assert_equal "", @buf
+
+    pid = fork {
+      @rd.close
+      5.times { @wr.write("5\r\nabcde\r\n") }
+      @wr.write("0\r\n")
+    }
+    @wr.close
+    ti = Unicorn::TeeInput.new(@rd, @env, @parser, @buf)
+    assert_nil @parser.content_length
+    assert_nil ti.instance_eval { @size }
+    assert ! @parser.body_eof?
+    assert_equal 25, ti.size
+    assert @parser.body_eof?
+    assert_equal 25, ti.instance_eval { @size }
+    assert_equal 0, ti.instance_eval { @tmp.pos }
+    assert_nothing_raised { ti.rewind }
+    assert_equal 0, ti.instance_eval { @tmp.pos }
+    assert_equal 'abcdeabcdeabcdeabcde', ti.read(20)
+    assert_equal 20, ti.instance_eval { @tmp.pos }
+    assert_nothing_raised { ti.rewind }
+    assert_equal 0, ti.instance_eval { @tmp.pos }
+    assert_kind_of File, ti.instance_eval { @tmp }
+    status = nil
+    assert_nothing_raised { pid, status = Process.waitpid2(pid) }
+    assert status.success?
+  end
+
+  def test_chunked_ping_pong
+    @parser = Unicorn::HttpParser.new
+    @buf = "POST / HTTP/1.1\r\n" \
+           "Host: localhost\r\n" \
+           "Transfer-Encoding: chunked\r\n" \
+           "\r\n"
+    assert_equal @env, @parser.headers(@env, @buf)
+    assert_equal "", @buf
+    chunks = %w(aa bbb cccc dddd eeee)
+    rd, wr = IO.pipe
+
+    pid = fork {
+      chunks.each do |chunk|
+        rd.read(1) == "." and
+          @wr.write("#{'%x' % [ chunk.size]}\r\n#{chunk}\r\n")
+      end
+      @wr.write("0\r\n")
+    }
+    ti = Unicorn::TeeInput.new(@rd, @env, @parser, @buf)
+    assert_nil @parser.content_length
+    assert_nil ti.instance_eval { @size }
+    assert ! @parser.body_eof?
+    chunks.each do |chunk|
+      wr.write('.')
+      assert_equal chunk, ti.read(16384)
+    end
+    _, status = Process.waitpid2(pid)
+    assert status.success?
+  end
+
+private
+
+  def init_parser(body, size = nil)
+    @parser = Unicorn::HttpParser.new
+    body = body.to_s.freeze
+    @buf = "POST / HTTP/1.1\r\n" \
+           "Host: localhost\r\n" \
+           "Content-Length: #{size || body.size}\r\n" \
+           "\r\n#{body}"
+    assert_equal @env, @parser.headers(@env, @buf)
+    assert_equal body, @buf
+  end
+
+end