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PostgresTestExtension.java
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PostgresTestExtension.java
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package me.konoplev.isolation;
import org.junit.jupiter.api.extension.*;
import org.springframework.boot.test.util.TestPropertyValues;
import org.springframework.context.ApplicationContextInitializer;
import org.springframework.context.ConfigurableApplicationContext;
import org.testcontainers.containers.PostgreSQLContainer;
import org.testcontainers.junit.jupiter.Testcontainers;
import static java.util.Objects.nonNull;
@Testcontainers
public class PostgresTestExtension implements BeforeAllCallback, AfterAllCallback {
private final static String DOCKER_IMAGE = "postgres:13.3-alpine";
private final static String DB_USERNAME = "postgres";
private final static String DB_PASSWORD = "postgres";
private final static String DB_NAME = "test";
private final static int DB_PORT = 5432;
private static PostgreSQLContainer<?> container;
@Override
public void beforeAll(ExtensionContext context) {
if (nonNull(container)) return;
container = new PostgreSQLContainer<>(DOCKER_IMAGE)
.withDatabaseName(DB_NAME)
.withUsername(DB_USERNAME)
.withPassword(DB_PASSWORD)
.withExposedPorts(DB_PORT)
.withReuse(false);
container.start();
}
public static class Initializer implements ApplicationContextInitializer<ConfigurableApplicationContext> {
@Override
public void initialize(ConfigurableApplicationContext configurableApplicationContext) {
TestPropertyValues.of(
"spring.datasource.url=" + container.getJdbcUrl(),
"spring.datasource.username=" + container.getUsername(),
"spring.datasource.password=" + container.getPassword(),
"spring.jpa.properties.hibernate.dialect=" + "org.hibernate.dialect.PostgreSQLDialect"
).applyTo(configurableApplicationContext.getEnvironment());
}
}
@Override
public void afterAll(ExtensionContext extensionContext) {
container.stop();
}
}