bootstd: Add tests for bootstd including all uclasses

Add a set of combined tests for the bootdev, bootflow and bootmeth
commands, along with associated functionality.

Expand the sandbox console-recording limit so that these can work.

These tests rely on a filesystem script which is not yet added to the
Python tests. It is included here as a shell script.

Signed-off-by: Simon Glass <sjg@chromium.org>

test/boot/bootstd_common.c

@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Test for bootdev functions. All start with 'bootdev'
+ *
+ * Copyright 2021 Google LLC
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#include <common.h>
+#include <bootstd.h>
+#include <dm.h>
+#include <test/suites.h>
+#include <test/ut.h>
+#include "bootstd_common.h"
+
+int bootstd_test_drop_bootdev_order(struct unit_test_state *uts)
+{
+	struct bootstd_priv *priv;
+	struct udevice *bootstd;
+
+	ut_assertok(uclass_first_device_err(UCLASS_BOOTSTD, &bootstd));
+	priv = dev_get_priv(bootstd);
+	priv->bootdev_order = NULL;
+
+	return 0;
+}
+
+int do_ut_bootstd(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
+{
+	struct unit_test *tests = UNIT_TEST_SUITE_START(bootstd_test);
+	const int n_ents = UNIT_TEST_SUITE_COUNT(bootstd_test);
+
+	return cmd_ut_category("bootstd", "bootstd_test_",
+			       tests, n_ents, argc, argv);
+}