Exemple #1
0
/* Try to create, open, and close a multi-page file */
void
testMultiPageContent(void)
{
  SM_FileHandle fh;
  SM_PageHandle ph;
  int i;

  testName = "test multi-page content";

  ph = (SM_PageHandle) malloc(PAGE_SIZE);

  // create a new page file
  TEST_CHECK(createPageFile (TESTPF));
  TEST_CHECK(openPageFile (TESTPF, &fh));
  printf("created and opened file\n");
  
  //ensure the capacity of the file with 4 pages
  TEST_CHECK(ensureCapacity(4,&fh));
  // read the current page into handle
  TEST_CHECK(readCurrentBlock(&fh, ph));
  // the page should be empty (zero bytes)
  for (i=0; i < PAGE_SIZE; i++)
    ASSERT_TRUE((ph[i] == 0), "expected zero byte in current page of freshly initialized page");
  printf("current block was empty with the page number =%d\n", getBlockPos(&fh));
    
  // read the next page into handle
  TEST_CHECK(readNextBlock(&fh, ph));
  // the page should be empty (zero bytes)
  for (i=0; i < PAGE_SIZE; i++)
    ASSERT_TRUE((ph[i] == 0), "expected zero byte in next page of freshly initialized page");
  printf("the next block was empty\n");
  printf("the updated page number is =%d\n",getBlockPos(&fh));
	
  // change ph to be a string and write that one to disk
  for (i=0; i < PAGE_SIZE; i++)
    ph[i] = (i % 10) + '0';
  TEST_CHECK(writeCurrentBlock(&fh, ph));
  printf("writing current block with the page number =%d\n", getBlockPos(&fh));

  // read back the page containing the string and check that it is correct
  TEST_CHECK(readCurrentBlock (&fh, ph));
  for (i=0; i < PAGE_SIZE; i++)
    ASSERT_TRUE((ph[i] == (i % 10) + '0'), "character in page read from disk is the one we expected.");
  printf("reading back current block into memory with page number =%d\n", getBlockPos(&fh));
 
  // read the last page into handle
  TEST_CHECK(readLastBlock(&fh, ph));
  // the page should be empty (zero bytes)
  for (i=0; i < PAGE_SIZE; i++)
    ASSERT_TRUE((ph[i] == 0), "expected zero byte in last page of freshly initialized page");
  printf("last block was empty with the page number =%d\n", getBlockPos(&fh));


  // change ph to be a string and write that one to disk
  for (i=0; i < PAGE_SIZE; i++)
    ph[i] = (i % 10) + '0';
  TEST_CHECK(writeCurrentBlock(&fh, ph));
  printf("writing current block with the page number =%d\n", getBlockPos(&fh));

  // read back the page containing the string and check that it is correct
  TEST_CHECK(readCurrentBlock (&fh, ph));
  for (i=0; i < PAGE_SIZE; i++)
    ASSERT_TRUE((ph[i] == (i % 10) + '0'), "character in page read from disk is the one we expected.");
  printf("reading back current block into memory with page number =%d\n", getBlockPos(&fh));



  // destroy new page file
  TEST_CHECK(destroyPageFile (TESTPF));  
  
  TEST_DONE();
}
/****************************************************************
 * Function Name: myTestAssign1
 *  
 * Description: Additional tests for Storage Manager.
 * 
 * Parameter: void
 * 
 * Return: void
 * 
 * Author: Dhruvit Modi ([email protected])
 *         Monika Priyadarshani ([email protected])
 ****************************************************************/
void
myTestAssign1(void)
{
  SM_FileHandle fh;
  SM_PageHandle ph;
  int i;
  
  ph = (SM_PageHandle) malloc(PAGE_SIZE);

  // create a new page file
  TEST_CHECK(createPageFile (TESTPF));
  TEST_CHECK(openPageFile (TESTPF, &fh));
  printf("created and opened file\n");
  
    
  for (i=0; i < PAGE_SIZE; i++)
    ph[i] = (i % 10) + '0';
  
  // write on the first block  
  TEST_CHECK(writeCurrentBlock (&fh, ph));
  printf("writing first block\n");
  
  // append empty block
  TEST_CHECK(appendEmptyBlock(&fh));
  printf("append Empty block\n");
   
   // write on the second block 
  TEST_CHECK(writeBlock (1, &fh, ph));
  printf("writing second block\n");
  
  TEST_CHECK(appendEmptyBlock(&fh));
  printf("append Empty block\n");
  
    // write to the third block
  TEST_CHECK(writeBlock (2, &fh, ph));
  printf("writing third block\n");
  
  // read back the page containing the string and check that it is correct
  printf("reading first block\n");
  TEST_CHECK(readFirstBlock (&fh, ph));
  for (i=0; i < PAGE_SIZE; i++)
    ASSERT_TRUE((ph[i] == (i % 10) + '0'), "character in page read from disk is the one we expected.");
  
  
  // read back the page containing the string and check that it is correct
  printf("reading last block\n");
  TEST_CHECK(readLastBlock (&fh, ph));
  for (i=0; i < PAGE_SIZE; i++)
    ASSERT_TRUE((ph[i] == (i % 10) + '0'), "character in page read from disk is the one we expected.");
  
  
  // read back the page containing the string and check that it is correct
  printf("reading previous block\n");
  TEST_CHECK(readPreviousBlock (&fh, ph));
  for (i=0; i < PAGE_SIZE; i++)
    ASSERT_TRUE((ph[i] == (i % 10) + '0'), "character in page read from disk is the one we expected.");
  
  
  // read back the page containing the string and check that it is correct
  printf("reading current block\n");
  TEST_CHECK(readCurrentBlock (&fh, ph));
  for (i=0; i < PAGE_SIZE; i++)
    ASSERT_TRUE((ph[i] == (i % 10) + '0'), "character in page read from disk is the one we expected.");
  
  
  // read back the page containing the string and check that it is correct
  printf("reading next block\n");
  TEST_CHECK(readNextBlock (&fh, ph));
  for (i=0; i < PAGE_SIZE; i++)
    ASSERT_TRUE((ph[i] == (i % 10) + '0'), "character in page read from disk is the one we expected.");
  
  // append empty block
  TEST_CHECK(appendEmptyBlock(&fh));
  printf("append Empty block\n");
  
  // ensure capacity
  TEST_CHECK(ensureCapacity(6, &fh));
  printf("ensure capacity\n");
  
    // destroy new page file
  TEST_CHECK(destroyPageFile (TESTPF));  
  
  TEST_DONE();
}
Exemple #3
0
//Read Block
RC readBlock (int pageNum, SM_FileHandle *fHandle, SM_PageHandle memPage)
{
    readCurrentBlock(fHandle,memPage);
}
Exemple #4
0
//first block
RC readFirstBlock (SM_FileHandle *fHandle, SM_PageHandle memPage)
{
     readCurrentBlock(fHandle, memPage);
}
void testReadWrite(void) {
	SM_FileHandle fh;
	SM_PageHandle ph;

	int i;

	ph = (SM_PageHandle) malloc(PAGE_SIZE);

	testName = "test read and write methods";

	TEST_CHECK(createPageFile (TESTPF));

	TEST_CHECK(openPageFile (TESTPF, &fh));
	ASSERT_TRUE(strcmp(fh.fileName, TESTPF) == 0, "filename correct");
	ASSERT_TRUE((fh.totalNumPages == 1), "expect 1 page in new file");
	ASSERT_TRUE((fh.curPagePos == 0), "freshly opened file's page position should be 0");

	//Writes A, B, C, D, E, F, G, H from 0th page to 7th page
	for(i = 0; i < 8; i ++) {
		memset(ph, 'A' + i, PAGE_SIZE);
		TEST_CHECK(writeBlock (i, &fh, ph));
		printf("writing %d th block\n", fh.curPagePos);
	}

	// read first page into handle  i.e. A
	TEST_CHECK(readFirstBlock (&fh, ph));
	for (i=0; i < PAGE_SIZE; i++)
		ASSERT_TRUE((ph[i] == 'A'), "expected A");
	printf("first block contains A\n");

	// read last page into handle   i.e. H
	TEST_CHECK(readLastBlock (&fh, ph));
	for (i=0; i < PAGE_SIZE; i++)
		ASSERT_TRUE((ph[i] == 'H'), "expected H");
	printf("last block contains H\n");

	// read first page into handle  i.e. A
	readFirstBlock (&fh, ph);

	// read next page into handle   i.e. B
	TEST_CHECK(readNextBlock (&fh, ph));
	for (i=0; i < PAGE_SIZE; i++)
		ASSERT_TRUE((ph[i] == 'B'), "expected B");
	printf("block contains B\n");

	readNextBlock (&fh, ph);        //C
	readNextBlock (&fh, ph);        //D

	// read previous page into handle	i.e. C
	TEST_CHECK(readPreviousBlock (&fh, ph));
	for (i=0; i < PAGE_SIZE; i++)
		ASSERT_TRUE((ph[i] == 'C'), "expected C");
	printf("block contains C\n");

	readNextBlock (&fh, ph);        //D
	readNextBlock (&fh, ph);        //E

	// read current page into handle       i.e. E
	TEST_CHECK(readCurrentBlock (&fh, ph));
	for (i=0; i < PAGE_SIZE; i++)
		ASSERT_TRUE((ph[i] == 'E'), "expected E");
	printf("block contains E\n");

	readPreviousBlock (&fh, ph);        //D

	//Replace D with Z
	memset(ph, 'Z', PAGE_SIZE);
	TEST_CHECK(writeCurrentBlock (&fh, ph));
	printf("writing D with Z\n");

	// read current page into handle        i.e. Z
	TEST_CHECK(readCurrentBlock (&fh, ph));
	for (i=0; i < PAGE_SIZE; i++){
		ASSERT_TRUE((ph[i] == 'Z'), "expected Z");
	}
	printf("block contains Z\n");

	TEST_CHECK(closePageFile (&fh));
	TEST_CHECK(destroyPageFile (TESTPF));

	free(ph);


	TEST_DONE();
}