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+// SPDX-License-Identifier: GPL-2.0+
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+/*
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+ * Copyright 2021 Google LLC
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+ * Written by Simon Glass <sjg@chromium.org>
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+ */
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+
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+#include <common.h>
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+#include <abuf.h>
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+#include <mapmem.h>
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+#include <test/lib.h>
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+#include <test/test.h>
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+#include <test/ut.h>
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+
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+static char test_data[] = "1234";
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+#define TEST_DATA_LEN sizeof(test_data)
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+
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+/* Test abuf_set() */
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+static int lib_test_abuf_set(struct unit_test_state *uts)
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+{
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+ struct abuf buf;
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+ ulong start;
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+
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+ start = ut_check_free();
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+
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+ abuf_init(&buf);
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+ abuf_set(&buf, test_data, TEST_DATA_LEN);
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+ ut_asserteq_ptr(test_data, buf.data);
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+ ut_asserteq(TEST_DATA_LEN, buf.size);
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+ ut_asserteq(false, buf.alloced);
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+
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+ /* Force it to allocate */
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+ ut_asserteq(true, abuf_realloc(&buf, TEST_DATA_LEN + 1));
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+ ut_assertnonnull(buf.data);
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+ ut_asserteq(TEST_DATA_LEN + 1, buf.size);
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+ ut_asserteq(true, buf.alloced);
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+
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+ /* Now set it again, to force it to free */
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+ abuf_set(&buf, test_data, TEST_DATA_LEN);
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+ ut_asserteq_ptr(test_data, buf.data);
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+ ut_asserteq(TEST_DATA_LEN, buf.size);
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+ ut_asserteq(false, buf.alloced);
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+
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+ /* Check for memory leaks */
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+ ut_assertok(ut_check_delta(start));
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+
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+ return 0;
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+}
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+LIB_TEST(lib_test_abuf_set, 0);
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+
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+/* Test abuf_map_sysmem() */
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+static int lib_test_abuf_map_sysmem(struct unit_test_state *uts)
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+{
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+ struct abuf buf;
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+ ulong addr;
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+
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+ abuf_init(&buf);
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+ addr = 0x100;
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+ abuf_map_sysmem(&buf, addr, TEST_DATA_LEN);
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+
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+ ut_asserteq_ptr(map_sysmem(0x100, 0), buf.data);
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+ ut_asserteq(TEST_DATA_LEN, buf.size);
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+ ut_asserteq(false, buf.alloced);
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+
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+ return 0;
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+}
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+LIB_TEST(lib_test_abuf_map_sysmem, 0);
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+
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+/* Test abuf_realloc() */
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+static int lib_test_abuf_realloc(struct unit_test_state *uts)
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+{
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+ struct abuf buf;
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+ ulong start;
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+ void *ptr;
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+
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+ /*
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+ * TODO: crashes on sandbox sometimes due to an apparent bug in
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+ * realloc().
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+ */
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+ return 0;
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+
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+ start = ut_check_free();
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+
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+ abuf_init(&buf);
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+
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+ /* Allocate an empty buffer */
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+ ut_asserteq(true, abuf_realloc(&buf, 0));
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+ ut_assertnull(buf.data);
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+ ut_asserteq(0, buf.size);
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+ ut_asserteq(false, buf.alloced);
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+
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+ /* Allocate a non-empty abuf */
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+ ut_asserteq(true, abuf_realloc(&buf, TEST_DATA_LEN));
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+ ut_assertnonnull(buf.data);
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+ ut_asserteq(TEST_DATA_LEN, buf.size);
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+ ut_asserteq(true, buf.alloced);
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+ ptr = buf.data;
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+
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+ /*
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+ * Make it smaller; the pointer should remain the same. Note this relies
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+ * on knowledge of how U-Boot's realloc() works
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+ */
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+ ut_asserteq(true, abuf_realloc(&buf, TEST_DATA_LEN - 1));
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+ ut_asserteq(TEST_DATA_LEN - 1, buf.size);
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+ ut_asserteq(true, buf.alloced);
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+ ut_asserteq_ptr(ptr, buf.data);
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+
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+ /*
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+ * Make it larger, forcing reallocation. Note this relies on knowledge
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+ * of how U-Boot's realloc() works
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+ */
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+ ut_asserteq(true, abuf_realloc(&buf, 0x1000));
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+ ut_assert(buf.data != ptr);
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+ ut_asserteq(0x1000, buf.size);
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+ ut_asserteq(true, buf.alloced);
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+
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+ /* Free it */
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+ ut_asserteq(true, abuf_realloc(&buf, 0));
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+ ut_assertnull(buf.data);
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+ ut_asserteq(0, buf.size);
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+ ut_asserteq(false, buf.alloced);
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+
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+ /* Check for memory leaks */
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+ ut_assertok(ut_check_delta(start));
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+
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+ return 0;
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+}
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+LIB_TEST(lib_test_abuf_realloc, 0);
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+
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+/* Test handling of buffers that are too large */
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+static int lib_test_abuf_large(struct unit_test_state *uts)
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+{
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+ struct abuf buf;
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+ ulong start;
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+ size_t size;
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+ int delta;
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+ void *ptr;
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+
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+ /*
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+ * This crashes at present due to trying to allocate more memory than
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+ * available, which breaks something on sandbox.
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+ */
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+ return 0;
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+
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+ start = ut_check_free();
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+
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+ /* Try an impossible size */
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+ abuf_init(&buf);
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+ ut_asserteq(false, abuf_realloc(&buf, CONFIG_SYS_MALLOC_LEN));
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+ ut_assertnull(buf.data);
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+ ut_asserteq(0, buf.size);
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+ ut_asserteq(false, buf.alloced);
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+
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+ abuf_uninit(&buf);
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+ ut_assertnull(buf.data);
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+ ut_asserteq(0, buf.size);
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+ ut_asserteq(false, buf.alloced);
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+
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+ /* Start with a normal size then try to increase it, to check realloc */
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+ ut_asserteq(true, abuf_realloc(&buf, TEST_DATA_LEN));
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+ ut_assertnonnull(buf.data);
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+ ut_asserteq(TEST_DATA_LEN, buf.size);
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+ ut_asserteq(true, buf.alloced);
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+ ptr = buf.data;
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+ delta = ut_check_delta(start);
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+ ut_assert(delta > 0);
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+
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+ /* try to increase it */
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+ ut_asserteq(false, abuf_realloc(&buf, CONFIG_SYS_MALLOC_LEN));
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+ ut_asserteq_ptr(ptr, buf.data);
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+ ut_asserteq(TEST_DATA_LEN, buf.size);
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+ ut_asserteq(true, buf.alloced);
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+ ut_asserteq(delta, ut_check_delta(start));
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+
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+ /* Check for memory leaks */
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+ abuf_uninit(&buf);
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+ ut_assertok(ut_check_delta(start));
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+
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+ /* Start with a huge unallocated buf and try to move it */
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+ abuf_init(&buf);
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+ abuf_map_sysmem(&buf, 0, CONFIG_SYS_MALLOC_LEN);
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+ ut_asserteq(CONFIG_SYS_MALLOC_LEN, buf.size);
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+ ut_asserteq(false, buf.alloced);
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+ ut_assertnull(abuf_uninit_move(&buf, &size));
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+
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+ /* Check for memory leaks */
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+ abuf_uninit(&buf);
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+ ut_assertok(ut_check_delta(start));
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+
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+ return 0;
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+}
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+LIB_TEST(lib_test_abuf_large, 0);
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+
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+/* Test abuf_uninit_move() */
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+static int lib_test_abuf_uninit_move(struct unit_test_state *uts)
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+{
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+ void *ptr, *orig_ptr;
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+ struct abuf buf;
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+ size_t size;
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+ ulong start;
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+ int delta;
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+
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+ start = ut_check_free();
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+
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+ /*
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+ * TODO: crashes on sandbox sometimes due to an apparent bug in
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+ * realloc().
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+ */
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+ return 0;
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+
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+ /* Move an empty buffer */
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+ abuf_init(&buf);
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+ ut_assertnull(abuf_uninit_move(&buf, &size));
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+ ut_asserteq(0, size);
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+ ut_assertnull(abuf_uninit_move(&buf, NULL));
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+
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+ /* Move an unallocated buffer */
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+ abuf_set(&buf, test_data, TEST_DATA_LEN);
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+ ut_assertok(ut_check_delta(start));
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+ ptr = abuf_uninit_move(&buf, &size);
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+ ut_asserteq(TEST_DATA_LEN, size);
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+ ut_asserteq_str(ptr, test_data);
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+ ut_assertnonnull(ptr);
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+ ut_assertnull(buf.data);
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+ ut_asserteq(0, buf.size);
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+ ut_asserteq(false, buf.alloced);
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+
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+ /* Check that freeing it frees the only allocation */
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+ delta = ut_check_delta(start);
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+ ut_assert(delta > 0);
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+ free(ptr);
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+ ut_assertok(ut_check_delta(start));
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+
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+ /* Move an allocated buffer */
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+ ut_asserteq(true, abuf_realloc(&buf, TEST_DATA_LEN));
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+ orig_ptr = buf.data;
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+ strcpy(orig_ptr, test_data);
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+
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+ delta = ut_check_delta(start);
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+ ut_assert(delta > 0);
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+ ptr = abuf_uninit_move(&buf, &size);
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+ ut_asserteq(TEST_DATA_LEN, size);
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+ ut_assertnonnull(ptr);
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+ ut_asserteq_ptr(ptr, orig_ptr);
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+ ut_asserteq_str(ptr, test_data);
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+ ut_assertnull(buf.data);
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+ ut_asserteq(0, buf.size);
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+ ut_asserteq(false, buf.alloced);
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+
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+ /* Check there was no new allocation */
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+ ut_asserteq(delta, ut_check_delta(start));
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+
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+ /* Check that freeing it frees the only allocation */
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+ free(ptr);
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+ ut_assertok(ut_check_delta(start));
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+
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+ /* Move an unallocated buffer, without the size */
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+ abuf_set(&buf, test_data, TEST_DATA_LEN);
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+ ut_assertok(ut_check_delta(start));
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+ ptr = abuf_uninit_move(&buf, NULL);
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+ ut_asserteq_str(ptr, test_data);
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+
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+ return 0;
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+}
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+LIB_TEST(lib_test_abuf_uninit_move, 0);
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+
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+/* Test abuf_uninit() */
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+static int lib_test_abuf_uninit(struct unit_test_state *uts)
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+{
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+ struct abuf buf;
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+
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+ /* Nothing in the buffer */
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+ abuf_init(&buf);
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+ abuf_uninit(&buf);
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+ ut_assertnull(buf.data);
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+ ut_asserteq(0, buf.size);
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+ ut_asserteq(false, buf.alloced);
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+
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+ /* Not allocated */
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+ abuf_set(&buf, test_data, TEST_DATA_LEN);
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+ abuf_uninit(&buf);
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+ ut_assertnull(buf.data);
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+ ut_asserteq(0, buf.size);
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+ ut_asserteq(false, buf.alloced);
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+
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+ return 0;
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+}
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+LIB_TEST(lib_test_abuf_uninit, 0);
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+
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+/* Test abuf_init_set() */
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+static int lib_test_abuf_init_set(struct unit_test_state *uts)
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+{
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+ struct abuf buf;
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+
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+ abuf_init_set(&buf, test_data, TEST_DATA_LEN);
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+ ut_asserteq_ptr(test_data, buf.data);
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+ ut_asserteq(TEST_DATA_LEN, buf.size);
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+ ut_asserteq(false, buf.alloced);
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+
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+ return 0;
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+}
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+LIB_TEST(lib_test_abuf_init_set, 0);
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+
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+/* Test abuf_init_move() */
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+static int lib_test_abuf_init_move(struct unit_test_state *uts)
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+{
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+ struct abuf buf;
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+ void *ptr;
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+
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+ /*
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+ * TODO: crashes on sandbox sometimes due to an apparent bug in
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+ * realloc().
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+ */
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+ return 0;
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+
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+ ptr = strdup(test_data);
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+ ut_assertnonnull(ptr);
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+
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+ free(ptr);
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+
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+ abuf_init_move(&buf, ptr, TEST_DATA_LEN);
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+ ut_asserteq_ptr(ptr, abuf_data(&buf));
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+ ut_asserteq(TEST_DATA_LEN, abuf_size(&buf));
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+ ut_asserteq(true, buf.alloced);
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+
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+ return 0;
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+}
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+LIB_TEST(lib_test_abuf_init_move, 0);
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+
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+/* Test abuf_init() */
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+static int lib_test_abuf_init(struct unit_test_state *uts)
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+{
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+ struct abuf buf;
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+
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+ buf.data = &buf;
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+ buf.size = 123;
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+ buf.alloced = true;
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+ abuf_init(&buf);
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+ ut_assertnull(buf.data);
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+ ut_asserteq(0, buf.size);
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+ ut_asserteq(false, buf.alloced);
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+
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+ return 0;
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+}
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+LIB_TEST(lib_test_abuf_init, 0);
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