Spring Boot 3.1 with compose and postgres dependencies fails running contextLoad test

Question

I just created a Spring Boot 3.1.3 project with dependencies as below:

Web
Data JPA
Test
Docker compose
Postgres
Testcontainers

It includes a compose.yml file with initial settings for postgres image. I run the application and all fine!

Then I run mvn clean test command and I get this error while running contextLoad() test:

[ERROR] com.example.demo.DemoApplicationTests.contextLoads  Time elapsed: 0.028 s  <<< ERROR!

and this is stack-trace:

Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception with message: Failed to determine a suitable driver class
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:171)
        at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:655)
        ... 113 more
Caused by: org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Failed to determine a suitable driver class
        at org.springframework.boot.autoconfigure.jdbc.DataSourceProperties.determineDriverClassName(DataSourceProperties.java:186)
        at org.springframework.boot.autoconfigure.jdbc.PropertiesJdbcConnectionDetails.getDriverClassName(PropertiesJdbcConnectionDetails.java:49)
        at org.springframework.boot.autoconfigure.jdbc.DataSourceConfiguration.createDataSource(DataSourceConfiguration.java:55)
        at org.springframework.boot.autoconfigure.jdbc.DataSourceConfiguration$Hikari.dataSource(DataSourceConfiguration.java:117)
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
        at java.base/java.lang.reflect.Method.invoke(Method.java:578)
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:139)
        ... 114 more

Should i exclude auto-configuring the data source in the tests? Or there are new ways of handling database connection configurations?

The error message says it couldn’t find a suitable driver class. Do you’ve a dependency on the database driver? — Abhijit Sarkar
– Abhijit Sarkar, Commented Sep 10, 2023 at 10:22
I know how to fix this in boot versions before 3.1. There are a lot additions in this new version for docker and testcontainers and I guess there is way to do it in a new way. — Ali Behzadian Nejad
– Ali Behzadian Nejad, Commented Sep 10, 2023 at 10:42
The fix has always been the same,, and It’s got nothing to do with Spring at all. add a dependency to the driver in your build file. — Abhijit Sarkar
– Abhijit Sarkar, Commented Sep 10, 2023 at 11:10
Can you maybe submit at least pom.xml and application.yaml files? — Boris
– Boris, Commented Sep 10, 2023 at 13:22

Ali Behzadian Nejad · Accepted Answer · 2023-09-12 19:09:57Z

1

I reported an issue for this and Spring boot team closed that issue with this comment:

This is to be expected as the Docker Compose support is disabled by default when running tests and the test that is generated by https://start.spring.io isn't yet configured to use Testcontainers.

As a workaround, I just added an H2 dependency as below:

<dependency>
    <groupId>com.h2database</groupId>
    <artifactId>h2</artifactId>
    <scope>test</scope>
</dependency>

This way, Spring Boot will not throw any exception.

answered Sep 12, 2023 at 19:09

Ali Behzadian Nejad

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