Spring Boot Test Failed to Load ApplicationContext: Failed to Determine a Suitable Driver Class

The error message indicates that there was an issue loading the application context for the 'BookDaoTest' class. It seems to be related to the configuration of the data source.

The specific error message is: 'Failed to determine a suitable driver class'. This suggests that the application is unable to find the appropriate driver class for the database connection.

To resolve this issue, you can check the following:

1. Make sure that the required database driver is included in the project's dependencies. If using Maven or Gradle, check the 'pom.xml' or 'build.gradle' file to ensure that the driver dependency is properly configured.

2. Verify that the driver class name is correctly specified in the configuration. Double-check the 'application.properties' or 'application.yml' file to ensure that the 'spring.datasource.driver-class-name' property is set to the correct value.

3. If you are using a custom configuration for the data source, ensure that it is correctly implemented. Check the code for the 'dataSource' bean definition in the 'DataSourceConfiguration' class (or any other relevant configuration class) to make sure that it is properly configured.

If the issue persists, you may need to provide more information about your project setup and configuration for further assistance.