Import Mesa 22.1.7

1 files changed, 239 insertions, 0 deletions

diff --git a/lib/mesa/src/util/tests/blob_test.cpp b/lib/mesa/src/util/tests/blob_test.cpp
new file mode 100644
index 000000000..3bcfeb4fd
--- /dev/null
+++ b/lib/mesa/src/util/tests/blob_test.cpp
@@ -0,0 +1,239 @@
+/*
+ * 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.
+ */
+
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#ifdef _MSC_VER
+#include <BaseTsd.h>
+typedef SSIZE_T ssize_t;
+#endif
+
+#include "util/ralloc.h"
+#include "blob.h"
+
+#include <gtest/gtest.h>
+#include "mesa-gtest-extras.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"
+
+
+// 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.
+TEST(BlobTest, WriteAndReadFunctions)
+{
+   struct blob blob;
+   struct blob_reader reader;
+   ssize_t reserved;
+   size_t str_offset, uint_offset;
+   uint8_t reserve_buf[sizeof(reserve_test_str)];
+
+   blob_init(&blob);
+
+   // 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));
+   blob_overwrite_bytes(&blob, 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_STREQ(bytes_test_str,
+                (const char *)blob_read_bytes(&reader, sizeof(bytes_test_str))) <<
+                "blob_write/read_bytes";
+
+   blob_copy_bytes(&reader, reserve_buf, sizeof(reserve_buf));
+
+   EXPECT_STREQ(reserve_test_str, (char *) reserve_buf)
+      << "blob_reserve_bytes/blob_copy_bytes";
+
+   EXPECT_STREQ(overwrite_test_str,
+                (const char *) blob_read_bytes(&reader, sizeof(overwrite_test_str)))
+      << "blob_overwrite_bytes";
+
+   EXPECT_EQ(uint32_test, blob_read_uint32(&reader)) << "blob_write/read_uint32";
+   EXPECT_EQ(uint32_overwrite, blob_read_uint32(&reader)) << "blob_overwrite_uint32";
+   EXPECT_EQ(uint64_test, blob_read_uint64(&reader)) << "blob_write/read_uint64";
+   EXPECT_EQ((intptr_t) &blob, blob_read_intptr(&reader)) << "blob_write/read_intptr";
+
+   EXPECT_STREQ(string_test_str, blob_read_string(&reader)) << "blob_write/read_string";
+
+   EXPECT_EQ(reader.end - reader.data, reader.current - reader.data) << "read_consumes_all_bytes";
+   EXPECT_FALSE(reader.overrun) << "read_does_not_overrun";
+
+   blob_finish(&blob);
+}
+
+// Test that data values are written and read with proper alignment.
+TEST(BlobTest, Alignment)
+{
+   struct blob blob;
+   struct blob_reader reader;
+   uint8_t bytes[] = "ABCDEFGHIJKLMNOP";
+   size_t delta, last, num_bytes;
+
+   blob_init(&blob);
+
+   // 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_NE(delta, blob.size - last) << "unaligned write of bytes";
+
+      blob_write_intptr(&blob, (intptr_t) &blob);
+
+      EXPECT_EQ(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_EQ((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_U8_ARRAY_EQUAL(bytes, (const uint8_t *) blob_read_bytes(&reader, num_bytes),
+                            num_bytes) << "unaligned read of bytes";
+      EXPECT_EQ((intptr_t) &blob, blob_read_intptr(&reader)) << "aligned read of intptr_t";
+   }
+
+   blob_finish(&blob);
+}
+
+// Test that we detect overrun.
+TEST(BlobTest, DetectOverrun)
+{
+   struct blob blob;
+   struct blob_reader reader;
+   uint32_t value = 0xdeadbeef;
+
+   blob_init(&blob);
+
+   blob_write_uint32(&blob, value);
+
+   blob_reader_init(&reader, blob.data, blob.size);
+
+   EXPECT_EQ(value, blob_read_uint32(&reader)) << "read before overrun";
+   EXPECT_FALSE(reader.overrun);
+   EXPECT_EQ(0, blob_read_uint32(&reader)) << "read at overrun";
+   EXPECT_TRUE(reader.overrun);
+
+   blob_finish(&blob);
+}
+
+// Test that we can read and write some large objects, (exercising the code in
+// the blob_write functions to realloc blob->data.
+TEST(BlobTest, BigObjects)
+{
+   void *ctx = ralloc_context(NULL);
+   struct blob blob;
+   struct blob_reader reader;
+   int size = 1000;
+   int count = 1000;
+   char *buf;
+
+   blob_init(&blob);
+
+   // Initialize our buffer.
+   buf = (char *) ralloc_size(ctx, size);
+   for (int i = 0; i < size; i++) {
+      buf[i] = i % 256;
+   }
+
+   // Write it many times.
+   for (int 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 (int i = 0; i < count; i++) {
+      EXPECT_U8_ARRAY_EQUAL((uint8_t *) buf,
+                            (const uint8_t *) blob_read_bytes(&reader, size), size)
+         << "read of large objects, iteration " << i;
+   }
+
+   EXPECT_EQ(reader.end - reader.data, reader.current - reader.data)
+      << "number of bytes read reading large objects";
+
+   EXPECT_FALSE(reader.overrun) << "overrun flag not set reading large objects";
+
+   blob_finish(&blob);
+   ralloc_free(ctx);
+}