MCQs on Parameterization and Data-Driven Testing | Selenium
Master Parameterization and Data-Driven Testing in Selenium with these 30 MCQs. Learn to read data from Excel/CSV, use Data Providers in TestNG, and efficiently parameterize tests for dynamic execution.
1. Reading Data from Excel/CSV
- Which library is commonly used to read data from Excel in Selenium?
- a) Apache POI
- b) JUnit
- c) TestNG
- d) WebDriverManager
- What is the primary purpose of data-driven testing in Selenium?
- a) To simplify test case writing
- b) To execute tests with multiple data sets
- c) To reduce manual testing
- d) To automate UI elements
- In Apache POI, which class is used to open an Excel workbook?
- a) WorkbookFactory
- b) FileReader
- c) WorkbookLoader
- d) ExcelParser
- How do you retrieve the value of a specific cell in an Excel sheet using Apache POI?
- a)
row.getCell(index).getValue() - b)
sheet.getCellValue(row, column) - c)
row.getCell(index).toString() - d)
row.get(index).getData()
- a)
- Which method is used to close the workbook in Apache POI?
- a)
workbook.close() - b)
workbook.finish() - c)
workbook.end() - d)
workbook.terminate()
- a)
- What is the default delimiter for a CSV file?
- a) Semicolon (;)
- b) Comma (,)
- c) Tab (\t)
- d) Pipe (|)
- Which Java library is commonly used to read and write CSV files?
- a) OpenCSV
- b) JExcelAPI
- c) Apache Commons IO
- d) Selenium WebDriver
- What is a common way to load CSV data into a Selenium test?
- a) Using
BufferedReaderto read the file line by line - b) Using
FileInputStreamto load the entire file - c) Using
HashMapto store data - d) Using
ExcelDataProvider
- a) Using
- In OpenCSV, which class is used to parse CSV files?
- a) CSVParser
- b) CSVReader
- c) FileReader
- d) CSVDataLoader
- Which of the following can cause errors when reading a CSV file?
- a) Missing headers
- b) Malformed rows
- c) Incorrect delimiters
- d) All of the above
2. Data Providers in TestNG
- What is the purpose of the
@DataProviderannotation in TestNG?- a) To manage test configurations
- b) To supply data to test methods
- c) To validate test results
- d) To handle exceptions
- What is the return type of a
@DataProvidermethod?- a)
List<Object[]> - b)
Object[][] - c)
Map<Object, Object> - d)
Set<Object[]>
- a)
- How do you associate a test method with a
@DataProviderin TestNG?- a) Use the
dataProviderattribute in the@Testannotation - b) Use the
@DataSourceannotation - c) Call the
@DataProvidermethod directly - d) Pass it as a parameter to the test class
- a) Use the
- How can you provide a name for a
@DataProviderin TestNG?- a) Using the
nameattribute in the@DataProviderannotation - b) Using the
@DataSourceannotation - c) Using the
valueattribute in the test method - d) Using the
testNameattribute
- a) Using the
- Can you use multiple
@DataProvidermethods in a single TestNG class?- a) Yes
- b) No
- c) Only if they have different names
- d) Only with XML configuration
- What happens if a test method has no associated data from the
@DataProvider?- a) It will skip execution
- b) It will run with default values
- c) It will throw an error
- d) It will pass automatically
- Which of the following is a valid
@DataProviderexample?- a)javaCopy code
@DataProvider public Object[][] getData() { return new Object[][] { {"data1"}, {"data2"} }; } - b)javaCopy code
@DataProvider public String[] getData() { return {"data1", "data2"}; } - c)javaCopy code
@DataProvider public int[][] getData() { return {{1, 2}, {3, 4}}; } - d)javaCopy code
@DataProvider public List<Object[]> getData() { return Arrays.asList({"data1"}, {"data2"}); }
- a)javaCopy code
- How do you handle large data sets in a
@DataProvider?- a) Use Excel or CSV files and load the data dynamically
- b) Hardcode all data into the
@DataProvider - c) Use multiple
@DataProvidermethods - d) Split the test into smaller methods
- Can a
@DataProvidermethod be defined in a different class?- a) Yes, using the
dataProviderClassattribute in the@Testannotation - b) No, it must be in the same class
- c) Only if the method is static
- d) Only with TestNG XML
- a) Yes, using the
- Which keyword is used to skip specific rows in a
@DataProvider?- a) SkipRow
- b) ConditionalExecution
- c) ConditionalSkip
- d) No direct keyword exists
3. Parameterizing Tests
- How do you pass parameters to a TestNG test method?
- a) Using the
@Parametersannotation - b) Using the
@Injectannotation - c) Using the
@DataProviderannotation - d) By modifying the test class constructor
- a) Using the
- How are parameters specified in TestNG XML?
- a) Inside the
<parameter>tag under a<test>tag - b) Using a
<param>attribute in the<suite>tag - c) Inside the
<parameters>tag under the<method>tag - d) Using the
<data>tag under the<class>tag
- a) Inside the
- How can you access XML parameters in a test method?
- a) By passing them as arguments to the method
- b) Using the
@Parametersannotation with the parameter name - c) Using the
ParameterContextobject - d) By declaring them as instance variables
- Can you use both
@Parametersand@DataProviderin the same test method?- a) Yes, but parameters must be used first
- b) No, they are mutually exclusive
- c) Yes, but only in separate test runs
- d) Yes, they can be used together
- What happens if a parameter in TestNG XML is not provided?
- a) The test is skipped
- b) TestNG throws an error
- c) The parameter value is null
- d) The test runs with a default value
- Can you override TestNG XML parameters programmatically?
- a) Yes, using
ITestContext - b) No, XML parameters cannot be overridden
- c) Only with Maven
- d) Only with a custom listener
- a) Yes, using
- What is the difference between
@Parametersand@DataProvider?- a)
@Parametersfetches data from XML,@DataProviderprovides data directly from code - b)
@Parametersis used for single data values,@DataProviderfor multiple sets - c) Both are identical in functionality
- d) Both fetch data from external sources
- a)
- How can you pass multiple parameters to a test method?
- a) Using
@Parameterswith a comma-separated list - b) Using an array in
@Parameters - c) By defining multiple
<parameter>tags in TestNG XML - d) All of the above
- a) Using
- Can parameters in TestNG XML be optional?
- a) No, all parameters must be defined
- b) Yes, using default values in the test method
- c) Yes, using the
<optional>attribute in XML - d) Only for
@DataProviderparameters
- What is the default value of a missing XML parameter in TestNG?
- a)
null - b)
""(empty string) - c)
0 - d) It throws
- a)
Parameterization and Data-Driven Testing in Selenium:
| Qno | Answer (Option with the text) |
|---|---|
| 1 | a) Apache POI |
| 2 | b) To execute tests with multiple data sets |
| 3 | a) WorkbookFactory |
| 4 | c) row.getCell(index).toString() |
| 5 | a) workbook.close() |
| 6 | b) Comma (,) |
| 7 | a) OpenCSV |
| 8 | a) Using BufferedReader to read the file line by line |
| 9 | b) CSVReader |
| 10 | d) All of the above |
| 11 | b) To supply data to test methods |
| 12 | b) Object[][] |
| 13 | a) Use the dataProvider attribute in the @Test annotation |
| 14 | a) Using the name attribute in the @DataProvider annotation |
| 15 | a) Yes |
| 16 | b) It will run with default values |
| 17 | a) (Correct code example) |
| 18 | a) Use Excel or CSV files and load the data dynamically |
| 19 | a) Yes, using the dataProviderClass attribute in the @Test annotation |
| 20 | d) No direct keyword exists |
| 21 | a) Using the @Parameters annotation |
| 22 | a) Inside the <parameter> tag under a <test> tag |
| 23 | b) Using the @Parameters annotation with the parameter name |
| 24 | b) No, they are mutually exclusive |
| 25 | c) The parameter value is null |
| 26 | a) Yes, using ITestContext |
| 27 | a) @Parameters fetches data from XML, @DataProvider provides data directly from code |
| 28 | d) All of the above |
| 29 | b) Yes, using default values in the test method |
| 30 | a) null |