dm: usb: Add tests for the USB uclass

This adds a simple test for probing and a functional test using the flash
stick emulator, which tests a large chunk of the USB stack.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

1 files changed, 50 insertions, 0 deletions

diff --git a/test/dm/usb.c b/test/dm/usb.c
new file mode 100644
index 0000000..6ea86d7
--- /dev/null
+++ b/test/dm/usb.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2015 Google, Inc
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <usb.h>
+#include <asm/io.h>
+#include <dm/test.h>
+#include <dm/ut.h>
+
+/* Test that sandbox USB works correctly */
+static int dm_test_usb_base(struct dm_test_state *dms)
+{
+	struct udevice *bus;
+
+	ut_asserteq(-ENODEV, uclass_get_device_by_seq(UCLASS_USB, 0, &bus));
+	ut_assertok(uclass_get_device(UCLASS_USB, 0, &bus));
+	ut_asserteq(-ENODEV, uclass_get_device_by_seq(UCLASS_USB, 2, &bus));
+
+	return 0;
+}
+DM_TEST(dm_test_usb_base, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+/*
+ * Test that we can use the flash stick. This is more of a functional test. It
+ * covers scanning the bug, setting up a hub and a flash stick and reading
+ * data from the flash stick.
+ */
+static int dm_test_usb_flash(struct dm_test_state *dms)
+{
+	struct udevice *dev;
+	block_dev_desc_t *dev_desc;
+	char cmp[1024];
+
+	ut_assertok(usb_init());
+	ut_assertok(uclass_get_device(UCLASS_MASS_STORAGE, 0, &dev));
+	ut_assertok(get_device("usb", "0", &dev_desc));
+
+	/* Read a few blocks and look for the string we expect */
+	ut_asserteq(512, dev_desc->blksz);
+	memset(cmp, '\0', sizeof(cmp));
+	ut_asserteq(2, dev_desc->block_read(dev_desc->dev, 0, 2, cmp));
+	ut_assertok(strcmp(cmp, "this is a test"));
+
+	return 0;
+}
+DM_TEST(dm_test_usb_flash, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);