static void tb_test_path_mixed_chain()

in test.c [1092:1182]

• 68 lines of code
• 2 McCabe index (conditional complexity)

static void tb_test_path_mixed_chain(struct kunit *test)
{
	/*
	 * DP Video path from host to device 4 where first and last link
	 * is bonded.
	 *
	 *    [Host]
	 *    1 |
	 *    1 |
	 *  [Device #1]
	 *    7 :| 8
	 *    1 :| 2
	 *  [Device #2]
	 *    5 :| 6
	 *    1 :| 2
	 *  [Device #3]
	 *    3 |
	 *    1 |
	 *  [Device #4]
	 */
	static const struct hop_expectation test_data[] = {
		{
			.route = 0x0,
			.in_port = 5,
			.in_type = TB_TYPE_DP_HDMI_IN,
			.out_port = 1,
			.out_type = TB_TYPE_PORT,
		},
		{
			.route = 0x1,
			.in_port = 1,
			.in_type = TB_TYPE_PORT,
			.out_port = 8,
			.out_type = TB_TYPE_PORT,
		},
		{
			.route = 0x701,
			.in_port = 2,
			.in_type = TB_TYPE_PORT,
			.out_port = 6,
			.out_type = TB_TYPE_PORT,
		},
		{
			.route = 0x50701,
			.in_port = 2,
			.in_type = TB_TYPE_PORT,
			.out_port = 3,
			.out_type = TB_TYPE_PORT,
		},
		{
			.route = 0x3050701,
			.in_port = 1,
			.in_type = TB_TYPE_PORT,
			.out_port = 13,
			.out_type = TB_TYPE_DP_HDMI_OUT,
		},
	};
	struct tb_switch *host, *dev1, *dev2, *dev3, *dev4;
	struct tb_port *in, *out;
	struct tb_path *path;
	int i;

	host = alloc_host(test);
	dev1 = alloc_dev_default(test, host, 0x1, true);
	dev2 = alloc_dev_default(test, dev1, 0x701, false);
	dev3 = alloc_dev_default(test, dev2, 0x50701, false);
	dev4 = alloc_dev_default(test, dev3, 0x3050701, true);

	in = &host->ports[5];
	out = &dev4->ports[13];

	path = tb_path_alloc(NULL, in, 9, out, 9, 1, "Video");
	KUNIT_ASSERT_TRUE(test, path != NULL);
	KUNIT_ASSERT_EQ(test, path->path_length, ARRAY_SIZE(test_data));
	for (i = 0; i < ARRAY_SIZE(test_data); i++) {
		const struct tb_port *in_port, *out_port;

		in_port = path->hops[i].in_port;
		out_port = path->hops[i].out_port;

		KUNIT_EXPECT_EQ(test, tb_route(in_port->sw), test_data[i].route);
		KUNIT_EXPECT_EQ(test, in_port->port, test_data[i].in_port);
		KUNIT_EXPECT_EQ(test, (enum tb_port_type)in_port->config.type,
				test_data[i].in_type);
		KUNIT_EXPECT_EQ(test, tb_route(out_port->sw), test_data[i].route);
		KUNIT_EXPECT_EQ(test, out_port->port, test_data[i].out_port);
		KUNIT_EXPECT_EQ(test, (enum tb_port_type)out_port->config.type,
				test_data[i].out_type);
	}
	tb_path_free(path);
}