Delete old x86 validator.

src/trusted/validator/x86/nc_inst_bytes_tests.cc

-/*
- * Copyright (c) 2011 The Native Client Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-/*
- * Unit tests for struct NCInstBytes in ncinstbuffer.{h,cc}.
- */
-
-#ifndef NACL_TRUSTED_BUT_NOT_TCB
-#error("This file is not meant for use in the TCB")
-#endif
-
-#include <stdio.h>
-
-#include "gtest/gtest.h"
-
-#include "native_client/src/trusted/validator/x86/ncinstbuffer.h"
-
-namespace {
-
-/* Constant defining maximum buffer size for memory. */
-const size_t kMaxBufferSize = 30;
-
-/* Test harness for class NCRemainingMemory. */
-class NCInstBytesTests : public ::testing::Test {
- protected:
-  void SetUp();
-  NCInstBytesTests();
-
-  /* Data for testing. */
-  NCInstBytes _bytes;                /* Inst bytes (read). */
-  NCRemainingMemory _memory;         /* Memory being tested. */
-  uint8_t _buffer[kMaxBufferSize];   /* Memory buffer to use. */
-  const size_t _buffer_size;         /* Actually size of test data. */
-  static const char* kTestData;      /* Data put into memory for testing. */
-
-  /* Verify if the contents of kTestData matches the contents
-   * of _bytes, up to _buffer_size; Remaining elements are zero.
-   */
-  void VerifyBytesMatchTestData();
-};
-
-const char* NCInstBytesTests::kTestData = "Test data";
-
-NCInstBytesTests::NCInstBytesTests()
-    : _buffer_size(strlen(kTestData)) {
-  /* Fill memory buffer with bad test data, so that we know if bad accesses
-   * occur past the end of the buffer.
-   */
-  for (size_t i = 0; i < kMaxBufferSize; ++i) {
-    _buffer[i] = 'X';
-  }
-  /* Now fill in the good test data. */
-  for (size_t i = 0; i < _buffer_size; ++i) {
-    _buffer[i] = (uint8_t) kTestData[i];
-  }
-}
-
-void NCInstBytesTests::VerifyBytesMatchTestData() {
-  /* First show that while there is real data in the memory,
-   * it has been copied to the bytes buffer.
-   */
-  size_t match_limit =
-      (_bytes.length <= _buffer_size) ? _bytes.length : _buffer_size;
-  for (size_t i = 0; i < match_limit; ++i) {
-    EXPECT_EQ(_bytes.byte[i], kTestData[i])
-        << "value verification of byte " << i;
-  }
-  /* Now show that any remaining bytes (after the memory
-   * has been read) are 0.
-   */
-  for (size_t i = match_limit; i < _bytes.length; ++i) {
-    EXPECT_EQ(0, _bytes.byte[i])
-        << "zero verification of byte " << i;
-  }
-}
-
-void NCInstBytesTests::SetUp() {
-  NCRemainingMemoryInit(_buffer, _buffer_size, &_memory);
-  NCInstBytesInitMemory(&_bytes, &_memory);
-  /* Be sure to verify that we can run the tests, which require
-   * a couple of extra slots for overflow.
-   */
-  ASSERT_LT(_buffer_size + 1, (size_t) MAX_INST_LENGTH)
-      << "Set up failed due to kTestData being too long.";
-}
-
-/* Test function NCInstBytesPeek, and see if it properly sees the data in
- * the instruction buffer.
- */
-TEST_F(NCInstBytesTests, PeekGetsData) {
-  /* First verify that we get text as defined in the test data. */
-  for (size_t i = 0; i < _buffer_size; ++i) {
-    EXPECT_EQ(NCInstBytesPeek(&_bytes, i), (uint8_t) kTestData[i])
-        << "peeking " << i << " bytes ahead.";
-  }
-  /* Now verify that if we look past the end of the data, we
-   * get 0.
-   */
-  EXPECT_EQ(0, NCInstBytesPeek(&_bytes, _buffer_size))
-      << "peeking one byte past end of buffer.";
-  EXPECT_EQ(0, NCInstBytesPeek(&_bytes, _buffer_size + 100))
-      << "peeking 100 bytes past end of buffer.";
-  EXPECT_EQ(0, _bytes.length);
-  VerifyBytesMatchTestData();
-}
-
-/* Test function NCInstBytesRead, and see if it properly read
- * data from the memory buffer.
- */
-TEST_F(NCInstBytesTests, ReadGetsData) {
-  /* First verify that we get text as defined in the test data. */
-  for (size_t i = 0; i < _buffer_size; ++i) {
-    EXPECT_EQ(NCInstBytesRead(&_bytes), (uint8_t) kTestData[i])
-        << "after reading " << i << " characters";
-    VerifyBytesMatchTestData();
-  }
-  EXPECT_EQ(_buffer_size, _bytes.length);
-  VerifyBytesMatchTestData();
-  /* Now verify that zero is returned for any additional reads. */
-  for (size_t i = _bytes.length; i < MAX_INST_LENGTH; ++i) {
-    EXPECT_EQ(0, NCInstBytesRead(&_bytes))
-        << "after reading all characters";
-  }
-  VerifyBytesMatchTestData();
-  /* Verify that we can apply a read, even if buffer overflow occurs,
-   * and the only effect is that the buffer length is not increased.
-   */
-  EXPECT_EQ(MAX_INST_LENGTH, _bytes.length);
-  EXPECT_EQ(0, NCInstBytesRead(&_bytes));
-  EXPECT_EQ(MAX_INST_LENGTH, _bytes.length);
-}
-
-/* Test function NCInstBytesReadBytes, and see if it properly reads
- * data from the memory buffer.
- */
-TEST_F(NCInstBytesTests, ReadBytesGetsData) {
-  /* First verify that we get text as defined in the test data. */
-  size_t chars_read = 0;
-  size_t stride = 4;
-  VerifyBytesMatchTestData();
-  while (chars_read < MAX_INST_LENGTH) {
-    if ((chars_read + stride) > MAX_INST_LENGTH) {
-      stride = MAX_INST_LENGTH - chars_read;
-    }
-    NCInstBytesReadBytes(stride, &_bytes);
-    chars_read += stride;
-    VerifyBytesMatchTestData();
-  }
-  /* Verify that we can apply additional reads without overflowing
-   * the buffer.
-   */
-  NCInstBytesReadBytes(2, &_bytes);
-  EXPECT_EQ(MAX_INST_LENGTH, _bytes.length) << "Buffer overflow fix failed.";
-}
-
-/* Test function NCInstBytesReset, and see if we back up to
- * the beginning of the instruction.
- */
-TEST_F(NCInstBytesTests, Reset) {
-  /* First read some bytes into the bytes buffer. */
-  NCInstBytesReadBytes(5, &_bytes);
-  VerifyBytesMatchTestData();
-  /* Now reset and see if we moved back. */
-  NCInstBytesReset(&_bytes);
-  EXPECT_EQ(0, _bytes.length) << "Reset didn't fix buffer length.";
-  VerifyBytesMatchTestData();
-  EXPECT_EQ(0, _memory.read_length) << "Reset didn't fix memory length.";
-  EXPECT_EQ(0, _memory.overflow_count) << "Reset didn't fix memory overflow.";
-  EXPECT_EQ((void*) _buffer, (void*) _memory.cur_pos)
-      << "Reset did not reset memory.";
-}
-
-};  // anonymous namespace
-
-int main(int argc, char *argv[]) {
-  testing::InitGoogleTest(&argc, argv);
-  return RUN_ALL_TESTS();
-}