--- /dev/null
+/*
+ * Copyright © 2014 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+/* A collection of unit tests for blob.c */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+
+#include "util/ralloc.h"
+#include "blob.h"
+
+#define bytes_test_str "bytes_test"
+#define reserve_test_str "reserve_test"
+
+/* This placeholder must be the same length as the next overwrite_test_str */
+#define placeholder_str "XXXXXXXXXXXXXX"
+#define overwrite_test_str "overwrite_test"
+#define uint32_test 0x12345678
+#define uint32_placeholder 0xDEADBEEF
+#define uint32_overwrite 0xA1B2C3D4
+#define uint64_test 0x1234567890ABCDEF
+#define string_test_str "string_test"
+
+bool error = false;
+
+static void
+expect_equal(uint64_t expected, uint64_t actual, const char *test)
+{
+ if (actual != expected) {
+ fprintf (stderr, "Error: Test '%s' failed: Expected=%ld, Actual=%ld\n",
+ test, expected, actual);
+ error = true;
+ }
+}
+
+static void
+expect_unequal(uint64_t expected, uint64_t actual, const char *test)
+{
+ if (actual == expected) {
+ fprintf (stderr, "Error: Test '%s' failed: Result=%ld, but expected something different.\n",
+ test, actual);
+ error = true;
+ }
+}
+
+static void
+expect_equal_str(const char *expected, const char *actual, const char *test)
+{
+ if (strcmp(expected, actual)) {
+ fprintf (stderr, "Error: Test '%s' failed:\n\t"
+ "Expected=\"%s\", Actual=\"%s\"\n",
+ test, expected, actual);
+ error = true;
+ }
+}
+
+static void
+expect_equal_bytes(uint8_t *expected, uint8_t *actual,
+ size_t num_bytes, const char *test)
+{
+ size_t i;
+
+ if (memcmp(expected, actual, num_bytes)) {
+ fprintf (stderr, "Error: Test '%s' failed:\n\t", test);
+
+ fprintf (stderr, "Expected=[");
+ for (i = 0; i < num_bytes; i++) {
+ if (i != 0)
+ fprintf(stderr, ", ");
+ fprintf(stderr, "0x%02x", expected[i]);
+ }
+ fprintf (stderr, "]");
+
+ fprintf (stderr, "Actual=[");
+ for (i = 0; i < num_bytes; i++) {
+ if (i != 0)
+ fprintf(stderr, ", ");
+ fprintf(stderr, "0x%02x", actual[i]);
+ }
+ fprintf (stderr, "]\n");
+
+ error = true;
+ }
+}
+
+/* Test at least one call of each blob_write_foo and blob_read_foo function,
+ * verifying that we read out everything we wrote, that every bytes is
+ * consumed, and that the overrun bit is not set.
+ */
+static void
+test_write_and_read_functions (void)
+{
+ void *ctx = ralloc_context(NULL);
+ struct blob *blob;
+ struct blob_reader reader;
+ uint8_t *reserved;
+ size_t str_offset, uint_offset;
+ uint8_t reserve_buf[sizeof(reserve_test_str)];
+
+ blob = blob_create(ctx);
+
+ /*** Test blob by writing one of every possible kind of value. */
+
+ blob_write_bytes(blob, bytes_test_str, sizeof(bytes_test_str));
+
+ reserved = blob_reserve_bytes(blob, sizeof(reserve_test_str));
+ memcpy(reserved, reserve_test_str, sizeof(reserve_test_str));
+
+ /* Write a placeholder, (to be replaced later via overwrite_bytes) */
+ str_offset = blob->size;
+ blob_write_bytes(blob, placeholder_str, sizeof(placeholder_str));
+
+ blob_write_uint32(blob, uint32_test);
+
+ /* Write a placeholder, (to be replaced later via overwrite_uint32) */
+ uint_offset = blob->size;
+ blob_write_uint32(blob, uint32_placeholder);
+
+ blob_write_uint64(blob, uint64_test);
+
+ blob_write_intptr(blob, (intptr_t) blob);
+
+ blob_write_string(blob, string_test_str);
+
+ /* Finally, overwrite our placeholders. */
+ blob_overwrite_bytes(blob, str_offset, overwrite_test_str,
+ sizeof(overwrite_test_str));
+ blob_overwrite_uint32(blob, uint_offset, uint32_overwrite);
+
+ /*** Now read each value and verify. */
+ blob_reader_init(&reader, blob->data, blob->size);
+
+ expect_equal_str(bytes_test_str,
+ blob_read_bytes(&reader, sizeof(bytes_test_str)),
+ "blob_write/read_bytes");
+
+ blob_copy_bytes(&reader, reserve_buf, sizeof(reserve_buf));
+ expect_equal_str(reserve_test_str, (char *) reserve_buf,
+ "blob_reserve_bytes/blob_copy_bytes");
+
+ expect_equal_str(overwrite_test_str,
+ blob_read_bytes(&reader, sizeof(overwrite_test_str)),
+ "blob_overwrite_bytes");
+
+ expect_equal(uint32_test, blob_read_uint32(&reader),
+ "blob_write/read_uint32");
+ expect_equal(uint32_overwrite, blob_read_uint32(&reader),
+ "blob_overwrite_uint32");
+ expect_equal(uint64_test, blob_read_uint64(&reader),
+ "blob_write/read_uint64");
+ expect_equal((intptr_t) blob, blob_read_intptr(&reader),
+ "blob_write/read_intptr");
+ expect_equal_str(string_test_str, blob_read_string(&reader),
+ "blob_write/read_string");
+
+ expect_equal(reader.end - reader.data, reader.current - reader.data,
+ "read_consumes_all_bytes");
+ expect_equal(false, reader.overrun, "read_does_not_overrun");
+
+ ralloc_free(ctx);
+}
+
+/* Test that data values are written and read with proper alignment. */
+static void
+test_alignment(void)
+{
+ void *ctx = ralloc_context(NULL);
+ struct blob *blob;
+ struct blob_reader reader;
+ uint8_t bytes[] = "ABCDEFGHIJKLMNOP";
+ size_t delta, last, num_bytes;
+
+ blob = blob_create(ctx);
+
+ /* First, write an intptr value to the blob and capture that size. This is
+ * the expected offset between any pair of intptr values (if written with
+ * alignment).
+ */
+ blob_write_intptr(blob, (intptr_t) blob);
+
+ delta = blob->size;
+ last = blob->size;
+
+ /* Then loop doing the following:
+ *
+ * 1. Write an unaligned number of bytes
+ * 2. Verify that write results in an unaligned size
+ * 3. Write an intptr_t value
+ * 2. Verify that that write results in an aligned size
+ */
+ for (num_bytes = 1; num_bytes < sizeof(intptr_t); num_bytes++) {
+ blob_write_bytes(blob, bytes, num_bytes);
+
+ expect_unequal(delta, blob->size - last, "unaligned write of bytes");
+
+ blob_write_intptr(blob, (intptr_t) blob);
+
+ expect_equal(2 * delta, blob->size - last, "aligned write of intptr");
+
+ last = blob->size;
+ }
+
+ /* Finally, test that reading also does proper alignment. Since we know
+ * that values were written with all the right alignment, all we have to do
+ * here is verify that correct values are read.
+ */
+ blob_reader_init(&reader, blob->data, blob->size);
+
+ expect_equal((intptr_t) blob, blob_read_intptr(&reader),
+ "read of initial, aligned intptr_t");
+
+ for (num_bytes = 1; num_bytes < sizeof(intptr_t); num_bytes++) {
+ expect_equal_bytes(bytes, blob_read_bytes(&reader, num_bytes),
+ num_bytes, "unaligned read of bytes");
+ expect_equal((intptr_t) blob, blob_read_intptr(&reader),
+ "aligned read of intptr_t");
+ }
+
+ ralloc_free(ctx);
+}
+
+/* Test that we detect overrun. */
+static void
+test_overrun(void)
+{
+ void *ctx =ralloc_context(NULL);
+ struct blob *blob;
+ struct blob_reader reader;
+ uint32_t value = 0xdeadbeef;
+
+ blob = blob_create(ctx);
+
+ blob_write_uint32(blob, value);
+
+ blob_reader_init(&reader, blob->data, blob->size);
+
+ expect_equal(value, blob_read_uint32(&reader), "read before overrun");
+ expect_equal(false, reader.overrun, "overrun flag not set");
+ expect_equal(0, blob_read_uint32(&reader), "read at overrun");
+ expect_equal(true, reader.overrun, "overrun flag set");
+
+ ralloc_free(ctx);
+}
+
+/* Test that we can read and write some large objects, (exercising the code in
+ * the blob_write functions to realloc blob->data.
+ */
+static void
+test_big_objects(void)
+{
+ void *ctx = ralloc_context(NULL);
+ struct blob *blob;
+ struct blob_reader reader;
+ int size = 1000;
+ int count = 1000;
+ size_t i;
+ char *buf;
+
+ blob = blob_create(ctx);
+
+ /* Initialize our buffer. */
+ buf = ralloc_size(ctx, size);
+ for (i = 0; i < size; i++) {
+ buf[i] = i % 256;
+ }
+
+ /* Write it many times. */
+ for (i = 0; i < count; i++) {
+ blob_write_bytes(blob, buf, size);
+ }
+
+ blob_reader_init(&reader, blob->data, blob->size);
+
+ /* Read and verify it many times. */
+ for (i = 0; i < count; i++) {
+ expect_equal_bytes((uint8_t *) buf, blob_read_bytes(&reader, size), size,
+ "read of large objects");
+ }
+
+ expect_equal(reader.end - reader.data, reader.current - reader.data,
+ "number of bytes read reading large objects");
+
+ expect_equal(false, reader.overrun,
+ "overrun flag not set reading large objects");
+
+ ralloc_free(ctx);
+}
+
+int
+main (void)
+{
+ test_write_and_read_functions ();
+ test_alignment ();
+ test_overrun ();
+ test_big_objects ();
+
+ return error ? 1 : 0;
+}
projects / mesa.git / commitdiff