Question

上图显示了包含Facebook数据的excel文件。

类FacebookDataExtraction从Excel文件中读取数据，并将数据存储为行对象列表，如代码所示。我已经使用config.properties文件来获取文件路径。 config.properties文件的内容为：FILE_NAME=D:/Refreshed_data_daily/all_hue_posts_in_excel.xlsx.

public class FacebookDataExtraction {

//private static final String FILE_NAME="D:/Refreshed_data_daily/all_hue_posts_in_excel.xlsx";
private static final String SHEET_NAME="nextv54plus_actions";
XSSFWorkbook workbook;

    public static void main(String[] args){

        FacebookDataExtraction obj= new FacebookDataExtraction();
        List<FacebookFields> displayList= new ArrayList<FacebookFields>();
        displayList=obj.readFromExcel();
        System.out.println("The Size of the list is:"+ displayList.size());
    }

    public List<FacebookFields> readFromExcel() {
        List<FacebookFields> fbList= new ArrayList<FacebookFields>();
        try
        {
            ReadPropertyFile data= new ReadPropertyFile("config.properties");
            FileInputStream fin= new FileInputStream(data.getPropertyFor("FILE_NAME"));
            workbook= new XSSFWorkbook(fin);
            int sheetIndex=0;
            for (Sheet sheet : workbook) {
                readSheet(sheet,sheetIndex ++, fbList);}

        }catch(FileNotFoundException e){
            e.printStackTrace();
        }
        catch(IOException e){
            e.printStackTrace();
        }
        return fbList;
    }

    private void readSheet(Sheet sheet, int sheetIndex , List<FacebookFields> fbList) {

        if(SHEET_NAME.equals(sheet.getSheetName())){
            workbook.removeSheetAt(sheetIndex);
            return;
        }
        for (Row row : sheet){
            if (row.getRowNum() > 0)
                fbList.add(readRow(row));}

    }

    private FacebookFields readRow(Row row) {

        FacebookFields record= new FacebookFields();
        for (Cell cell : row) {
            switch (cell.getColumnIndex()) {
            case 0: record.setName(cell.getStringCellValue()); 
            break; 
            case 1: record.setId(cell.getStringCellValue()); 
            break; 
            case 2: record.setDate(cell.getStringCellValue());
            break; 
            case 3: record.setMessage(cell.getStringCellValue());
            break; 
            case 4: record.setType(cell.getStringCellValue());
            break; 
            case 5: record.setPage(cell.getStringCellValue());
            break; 
            case 6: record.setLikeCount(String.valueOf(cell.getNumericCellValue()));
            break; 
            case 7: record.setCommentCount(String.valueOf(cell.getNumericCellValue())); 
            break; 
            case 8: record.setShareCount(String.valueOf(cell.getNumericCellValue())); 
            break; 
            }
        }

        return record;
    }

    public boolean containsData() {  

        List<FacebookFields> checkList= readFromExcel();    
        return !checkList.isEmpty() ;
    }

    }

FacebookFields类（此处未显示）包含所提取数据的设置方法！如何为方法readRow()编写测试用例或如何测试列的每个字段是否包含数据？

Answer 1

所以，你想测试一个会返回FacebookFields的readRow（）方法。
由于它是私有的，你不能直接对这个私有方法进行单元测试，但你的主要目标似乎是测试这个方法。让我们考虑一下这里的重构/重新设计。
您可以创建一个类retrieveFromRow()，其中包含一个公共方法FacebookFields，该方法返回FacebookDataExtraction。
因此，每次FacebookFieldRetriever遇到excel表格中的一行时，它都会创建一个retrieveFromRow()的对象，并调用FacebookFields以从该行建模retrieveFromRow()对象。< / LI>
当我们通过课程设计阶段时，让我们继续进行单元测试。所以，现在你有一个公共方法：class FacebookFieldRetriever{ public FacebookFields retrieveFromRow(Row row) { FacebookFields record= new FacebookFields(); for (Cell cell : row) { switch (cell.getColumnIndex()) { case 0: record.setName(cell.getStringCellValue()); break; case 1: record.setId(cell.getStringCellValue()); break; case 2: record.setDate(cell.getStringCellValue()); break; case 3: record.setMessage(cell.getStringCellValue()); break; case 4: record.setType(cell.getStringCellValue()); break; case 5: record.setPage(cell.getStringCellValue()); break; case 6: record.setLikeCount(String.valueOf(cell.getNumericCellValue())); break; case 7: record.setCommentCount(String.valueOf(cell.getNumericCellValue())); break; case 8: record.setShareCount(String.valueOf(cell.getNumericCellValue())); break; } } return record; } }你可以实际单元测试，假设你有一个行对象，其中包含包含excel表中实际值的单元格。（基本上，我们专注于测试开关案例逻辑）。
FacebookFieldRetriever Class

private final String TEST_NAME = "Mark Zuckerberg"; private final String TEST_id = "4"; private final String TEST_DATE = "2015-10-13; private final String TEST_MSG = "Welcome to Facebook"; private final String TEST_TYPE = "SomeType"; private final String TEST_PAGE = "SomePage"; private final String TEST_LIKECOUNT = 6; private final String TEST_COMMENTCOUNT = 7; private final String TEST_SHARECOUNT = 8 ; public void testFacebookFieldRetriever() { XSSFWorkbook wb = new XSSFWorkbook(); Sheet sheettemp = wb.createSheet(); Row row = sheettemp.createRow(1); Cell cell = row.createCell(0); cell.setCellValue(TEST_NAME); Cell cell1 = row.createCell(1); cell.setCellValue(TEST_id); Cell cell2 = row.createCell(2); cell.setCellValue(TEST_DATE); Cell cell3 = row.createCell(3); cell.setCellValue(TEST_MSG); Cell cell4 = row.createCell(4); cell.setCellValue(TEST_TYPE); Cell cell5 = row.createCell(5); cell.setCellValue(TEST_PAGE); Cell cell6 = row.createCell(6); cell.setCellValue(TEST_LIKECOUNT); Cell cell7 = row.createCell(7); cell.setCellValue(TEST_COMMENTCOUNT); Cell cell8 = row.createCell(8); cell.setCellValue(TEST_SHARECOUNT); FacebookFieldRetriever fbRetriever = new FacebookFieldRetriever(); FacebookFields fbFields = fbRetriever.retrieveFromRow(row); assertEquals(fbFields.getName(), TEST_NAME); assertEquals(fbFields.getId(), TEST_id); assertEquals(fbFields.getMessage(), TEST_MSG); assertEquals(fbFields.getLikeCount(), TEST_LIKECOUNT); assertEquals(fbFields.getShareCount(), TEST_SHARECOUNT); assertEquals(fbFields.getCommentCount(), TEST_COMMENTCOUNT); assertEquals(fbFields.getPage(), TEST_PAGE); assertEquals(fbFields.getType(), TEST_TYPE); } }
单元测试示例下面：

类FacebookFieldRetrieverTest {

{{1}}

`

您可以按照上面给出的方式进行测试。希望它有所帮助。

Answer 2

如果您的excel包含示例excel中第一行的“期望值”，则以下测试可能是一个开始。请注意，列表的equals可能有点粗糙，特别是因为我不确定它如何用心对待元素的内部顺序。

编辑我在FacebookDataExtraction类中添加了一个构造函数参数，该参数将文件名带到应该从中提取数据的excel文件。

@Test
public void testWhetherListConatinsData(){ 
    List<FacebookFields> expectedList = new ArrayList<>();
    // Fill the expected list here:
    expectedList.add("expected value");
    // ... Add more if you want to...

    // Read in data.
    FacebookDataExtraction fbDataList= new FacebookDataExtraction("path/to/testdata/test_with_strange_first_name.xlsx");

    List<FacebookFields> listOfFields = fbDataList.readFromExcel();
    // Good check to start with.
    assertEquals(listOfFields.containsData(), true); 

    // Actual data check.
    assertEquals("Lists not the same", expectedList, listOfFields);
}

如何测试从java中的excel文件读取数据的方法？

2 个答案: