}
	if buf.String() != "hello world" {
		t.Errorf("buf.String() = %q, want %q", buf.String(), "hello world")
	}
}

// readerFunc is a Reader implemented by the underlying func.
type readerFunc func(p []byte) (int, error)

func (f readerFunc) Read(p []byte) (int, error) {
	return f(p)
}

// callDepth returns the logical call depth for the given PCs.

	}
	if !isTimeoutError(err) {
		t.Error("Write timed out but did not classify the error as a Timeout")
	}
}

type readerFunc func([]byte) (int, error)

func (f readerFunc) Read(b []byte) (int, error) { return f(b) }

// TestDialer tests that tls.Dialer.DialContext can abort in the middle of a handshake.

			readerFunc:    newFileFunc,
			contentLength: -1,
		},
		{
			name:          "buffer",
			contentLength: nBytes,
			readerFunc:    newBufferFunc,
		},
		{
			name:       "buffer, no length",
			readerFunc: newBufferFunc,
		},
		{
			name:          "buffer, length -1",
			contentLength: -1,
			readerFunc:    newBufferFunc,
		},
	}

	for _, tc := range cases {