}
	}
}

func ResetProxyEnv() {
	for _, v := range []string{"HTTP_PROXY", "http_proxy", "NO_PROXY", "no_proxy", "REQUEST_METHOD"} {
		os.Unsetenv(v)
	}
	ResetCachedEnvironment()

}

func NewTestTimeoutHandler(handler Handler, ctx context.Context) Handler {
	return &timeoutHandler{
		handler:     handler,
		testContext: ctx,
		// (no body)
	}
}

func ResetCachedEnvironment() {
	resetProxyConfig()
}

func (t *Transport) NumPendingRequestsForTesting() int {
	t.reqMu.Lock()
	defer t.reqMu.Unlock()
	return len(t.reqCanceler)
}

			os.Setenv("HTTP_PROXY", tt.env)
			os.Setenv("HTTPS_PROXY", tt.httpsenv)
			os.Setenv("NO_PROXY", tt.noenv)
			os.Setenv("REQUEST_METHOD", tt.reqmeth)
			ResetCachedEnvironment()
			return ProxyFromEnvironment(req)
		})
	}
}

func TestProxyFromEnvironmentLowerCase(t *testing.T) {
	ResetProxyEnv()
	defer ResetProxyEnv()
	for _, tt := range proxyFromEnvTests {