testcontainers

testcontainers-demo/HELP.md

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+# Read Me First
+The following was discovered as part of building this project:
+
+* The original package name 'ru.sysout.testcontainers-demo' is invalid and this project uses 'ru.sysout.testcontainersdemo' instead.
+
+# Getting Started
+
+### Reference Documentation
+For further reference, please consider the following sections:
+
+* [Official Apache Maven documentation](https://maven.apache.org/guides/index.html)
+* [Spring Boot Maven Plugin Reference Guide](https://docs.spring.io/spring-boot/docs/2.4.0-SNAPSHOT/maven-plugin/reference/html/)
+* [Create an OCI image](https://docs.spring.io/spring-boot/docs/2.4.0-SNAPSHOT/maven-plugin/reference/html/#build-image)
+* [Testcontainers Postgres Module Reference Guide](https://www.testcontainers.org/modules/databases/postgres/)
+* [Spring Data JDBC](https://docs.spring.io/spring-data/jdbc/docs/current/reference/html/)
+* [Spring Data JPA](https://docs.spring.io/spring-boot/docs/2.3.4.RELEASE/reference/htmlsingle/#boot-features-jpa-and-spring-data)
+* [Testcontainers](https://www.testcontainers.org/)
+
+### Guides
+The following guides illustrate how to use some features concretely:
+
+* [Using Spring Data JDBC](https://github.com/spring-projects/spring-data-examples/tree/master/jdbc/basics)
+* [Accessing Data with JPA](https://spring.io/guides/gs/accessing-data-jpa/)
+

testcontainers-demo/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>2.4.0-SNAPSHOT</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+	<groupId>ru.sysout</groupId>
+	<artifactId>testcontainers-demo</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<name>testcontainers-demo</name>
+	<description>Demo project for Spring Boot</description>
+
+	<properties>
+		<java.version>11</java.version>
+		<testcontainers.version>1.14.3</testcontainers.version>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-jpa</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.postgresql</groupId>
+			<artifactId>postgresql</artifactId>
+			<scope>runtime</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.testcontainers</groupId>
+			<artifactId>junit-jupiter</artifactId>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.testcontainers</groupId>
+			<artifactId>postgresql</artifactId>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.liquibase</groupId>
+			<artifactId>liquibase-core</artifactId>
+		</dependency>
+	</dependencies>
+
+	<dependencyManagement>
+		<dependencies>
+			<dependency>
+				<groupId>org.testcontainers</groupId>
+				<artifactId>testcontainers-bom</artifactId>
+				<version>${testcontainers.version}</version>
+				<type>pom</type>
+				<scope>import</scope>
+			</dependency>
+		</dependencies>
+	</dependencyManagement>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+	<repositories>
+		<repository>
+			<id>spring-milestones</id>
+			<name>Spring Milestones</name>
+			<url>https://repo.spring.io/milestone</url>
+		</repository>
+		<repository>
+			<id>spring-snapshots</id>
+			<name>Spring Snapshots</name>
+			<url>https://repo.spring.io/snapshot</url>
+			<snapshots>
+				<enabled>true</enabled>
+			</snapshots>
+		</repository>
+	</repositories>
+	<pluginRepositories>
+		<pluginRepository>
+			<id>spring-milestones</id>
+			<name>Spring Milestones</name>
+			<url>https://repo.spring.io/milestone</url>
+		</pluginRepository>
+		<pluginRepository>
+			<id>spring-snapshots</id>
+			<name>Spring Snapshots</name>
+			<url>https://repo.spring.io/snapshot</url>
+			<snapshots>
+				<enabled>true</enabled>
+			</snapshots>
+		</pluginRepository>
+	</pluginRepositories>
+
+</project>

testcontainers-demo/src/main/java/ru/sysout/testcontainersdemo/TestcontainersDemoApplication.java

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+package ru.sysout.testcontainersdemo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class TestcontainersDemoApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(TestcontainersDemoApplication.class, args);
+	}
+
+}

testcontainers-demo/src/main/java/ru/sysout/testcontainersdemo/dao/AnimalRepository.java

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+package ru.sysout.testcontainersdemo.dao;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import ru.sysout.testcontainersdemo.model.Animal;
+
+
+public interface AnimalRepository extends JpaRepository<Animal, Long> {
+}

testcontainers-demo/src/main/java/ru/sysout/testcontainersdemo/model/Animal.java

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+package ru.sysout.testcontainersdemo.model;
+
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+@NoArgsConstructor
+@Data
+@Entity
+public class Animal {
+    @Id
+    @GeneratedValue(strategy= GenerationType.SEQUENCE)
+    private long id;
+    private String name;
+
+    public Animal(String name) {
+        this.name = name;
+    }
+}

testcontainers-demo/src/main/resources/application.yml

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+spring:
+  jpa:
+    show-sql: true
+    hibernate:
+      ddl-auto: validate
+  liquibase:
+    enabled: false
+    change-log: classpath:db/changelog/db.changelog-master.yaml

testcontainers-demo/src/main/resources/db.sql

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+CREATE SEQUENCE hibernate_sequence START 100;
+create table animal
+(
+    id       bigint primary key,
+    name     varchar(255)
+);
+
+insert into animal (id, name)
+values (1,'animal1'),
+       (2,'animal2'),
+       (3,'animal3');
+
+
+

testcontainers-demo/src/main/resources/db/changelog/1.0/2020-20-02-create-tables.yaml

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+databaseChangeLog:
+  - changeSet:
+      id: 1596784098744-1
+      author: myluc (generated)
+      changes:
+        - createTable:
+            columns:
+              - column:
+                  constraints:
+                    nullable: false
+                    primaryKey: true
+                    primaryKeyName: animal_pkey
+                  name: id
+                  type: BIGINT
+              - column:
+                  name: name
+                  type: VARCHAR(255)
+            tableName: animal
+  - changeSet:
+      id: 1596784098744-3
+      author: myluc (generated)
+      changes:
+        - createSequence:
+            cacheSize: 1
+            cycle: false
+            dataType: bigint
+            incrementBy: 1
+            maxValue: 9223372036854775807
+            minValue: 1
+            sequenceName: hibernate_sequence
+            startValue: 100

testcontainers-demo/src/main/resources/db/changelog/data/data/animal.csv

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+"id","name"
+"1","cat"
+"2","dog"

testcontainers-demo/src/main/resources/db/changelog/data/initial-data.yaml

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+databaseChangeLog:
+- changeSet:
+      id: 1596784098744-2
+      author: myluc (generated)
+      changes:
+        - loadData:
+            columns:
+              - column:
+                  header: id
+                  name: id
+                  type: NUMERIC
+              - column:
+                  header: name
+                  name: name
+                  type: STRING
+            commentLineStartsWith: '#'
+            encoding: UTF-8
+            file: data/animal.csv
+            quotchar: '"'
+            separator: ','
+            relativeToChangelogFile: true
+            tableName: animal

testcontainers-demo/src/main/resources/db/changelog/db.changelog-master.yaml

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+databaseChangeLog:
+              - includeAll:
+                    path: db/changelog/1.0/
+              - includeAll:
+                    path: db/changelog/data/

testcontainers-demo/src/test/java/ru/sysout/testcontainersdemo/IntegrationLiquiScriptTest.java

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+package ru.sysout.testcontainersdemo;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.util.TestPropertyValues;
+import org.springframework.context.ApplicationContextInitializer;
+import org.springframework.context.ConfigurableApplicationContext;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.transaction.annotation.Transactional;
+import org.testcontainers.containers.PostgreSQLContainer;
+import org.testcontainers.junit.jupiter.Container;
+import org.testcontainers.junit.jupiter.Testcontainers;
+import ru.sysout.testcontainersdemo.dao.AnimalRepository;
+import ru.sysout.testcontainersdemo.model.Animal;
+
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+
+@SpringBootTest
+@ContextConfiguration(initializers = {IntegrationLiquiScriptTest.Initializer.class})
+@Testcontainers
+public class IntegrationLiquiScriptTest {
+
+    @Autowired
+    AnimalRepository animalRepository;
+
+    @Container
+    public static PostgreSQLContainer<?> postgreSQLContainer = new PostgreSQLContainer<>("postgres:13")
+            .withDatabaseName("mydb")
+            .withUsername("myuser")
+            .withPassword("mypass");
+
+    static class Initializer implements ApplicationContextInitializer<ConfigurableApplicationContext> {
+        public void initialize(ConfigurableApplicationContext configurableApplicationContext) {
+            TestPropertyValues.of(
+                    "spring.datasource.url=" + postgreSQLContainer.getJdbcUrl(),
+                    "spring.datasource.username=" + postgreSQLContainer.getUsername(),
+                    "spring.datasource.password=" + postgreSQLContainer.getPassword(),
+                    "spring.liquibase.enabled=true"
+            ).applyTo(configurableApplicationContext.getEnvironment());
+        }
+    }
+    @Test
+    @Transactional
+    public void animalsCountShouldBeCorrect() {
+        long count = animalRepository.count();
+       assertEquals(2, count);
+    }
+
+    @Test
+    @Transactional
+    public void animalsShouldBeCorrect() {
+        List<Animal> animals = animalRepository.findAll();
+        String[] actualAnimals = {"cat", "dog"};
+        assertArrayEquals(actualAnimals, animals.stream().map(animal -> animal.getName()).toArray());
+    }
+
+}