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testcontainers
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‎docker-compose-db-only.yml‎

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services:
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db-local-postgres:
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container_name: jfs-postgres-local
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image: postgres
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environment:
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POSTGRES_USER: amigoscode
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POSTGRES_PASSWORD: password
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POSTGRES_DB: jfs
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ports:
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- "5333:5432"
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restart: unless-stopped
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volumes:
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- db-local:/data/postgres
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networks:
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- amigos
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networks:
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amigos:
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driver: bridge
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volumes:
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db-local:

‎pom.xml‎

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<groupId>org.flywaydb</groupId>
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<artifactId>flyway-database-postgresql</artifactId>
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</dependency>
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<dependency>
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<groupId>org.testcontainers</groupId>
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<artifactId>junit-jupiter</artifactId>
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</dependency>
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<dependency>
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<groupId>org.testcontainers</groupId>
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<artifactId>postgresql</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-testcontainers</artifactId>
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</dependency>
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</dependencies>
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<build>

‎src/main/java/com/amigoscode/product/ProductRepository.java‎

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package com.amigoscode.product;
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import org.springframework.data.jpa.repository.JpaRepository;
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import org.springframework.data.jpa.repository.Query;
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import java.util.List;
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import java.util.UUID;
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public interface ProductRepository
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extends JpaRepository<Product, UUID> {
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@Query("SELECT p FROM Product p WHERE p.isPublished AND p.stockLevel > 0 ORDER BY p.price ASC")
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List<Product> findAvailablePublishedProducts();
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}

‎src/main/java/com/amigoscode/product/ProductService.java‎

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@@ -2,9 +2,6 @@
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import com.amigoscode.exception.ResourceNotFound;
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import org.springframework.stereotype.Service;
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import org.springframework.web.bind.annotation.PathVariable;
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import org.springframework.web.bind.annotation.PutMapping;
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import org.springframework.web.bind.annotation.RequestBody;
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import java.util.List;
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import java.util.UUID;
@@ -57,7 +54,7 @@ public UUID saveNewProduct(NewProductRequest product) {
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return id;
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}
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private Function<Product, ProductResponse> mapToResponse() {
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Function<Product, ProductResponse> mapToResponse() {
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return p -> new ProductResponse(
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p.getId(),
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p.getName(),

‎src/test/java/com/amigoscode/SharedPostgresContainer.java‎

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package com.amigoscode;
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import org.flywaydb.core.Flyway;
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import org.testcontainers.containers.PostgreSQLContainer;
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import org.testcontainers.utility.DockerImageName;
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public class SharedPostgresContainer extends PostgreSQLContainer<SharedPostgresContainer> {
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private static final DockerImageName IMAGE_NAME
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= DockerImageName.parse("postgres:17-alpine");
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private static volatile SharedPostgresContainer sharedPostgresContainer;
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public SharedPostgresContainer(DockerImageName dockerImageName) {
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super(dockerImageName);
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this.withReuse(true)
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.withUsername("amigoscode")
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.withDatabaseName("amigos")
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.withLabel("name", "amigscode")
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.withPassword("password");
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}
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public static SharedPostgresContainer getInstance() {
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if(sharedPostgresContainer == null) {
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synchronized (SharedPostgresContainer.class) {
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sharedPostgresContainer = new SharedPostgresContainer(
26+
IMAGE_NAME
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);
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sharedPostgresContainer.start();
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Flyway flyway = Flyway.configure()
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.dataSource(
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sharedPostgresContainer.getJdbcUrl(),
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sharedPostgresContainer.getUsername(),
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sharedPostgresContainer.getPassword()
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)
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.load();
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flyway.migrate();
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System.out.println("flyway applied migrations");
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}
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}
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return sharedPostgresContainer;
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}
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}

‎src/test/java/com/amigoscode/product/ProductRepositoryTest.java‎

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package com.amigoscode.product;
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3+
import com.amigoscode.SharedPostgresContainer;
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import org.junit.jupiter.api.BeforeEach;
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import org.junit.jupiter.api.Test;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.boot.test.autoconfigure.jdbc.AutoConfigureTestDatabase;
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import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
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import org.springframework.boot.testcontainers.service.connection.ServiceConnection;
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import org.testcontainers.junit.jupiter.Container;
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import org.testcontainers.junit.jupiter.Testcontainers;
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import java.math.BigDecimal;
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import java.util.List;
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import java.util.UUID;
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import static org.assertj.core.api.Assertions.assertThat;
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19+
@DataJpaTest
20+
@AutoConfigureTestDatabase(
21+
replace = AutoConfigureTestDatabase.Replace.NONE
22+
)
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@Testcontainers
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class ProductRepositoryTest {
25+
26+
@Container
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@ServiceConnection
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private static final SharedPostgresContainer POSTGRES =
29+
SharedPostgresContainer.getInstance();
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@Autowired
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private ProductRepository underTest;
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@BeforeEach
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void setUp() {
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underTest.deleteAll();
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}
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@Test
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void canFindAvailablePublishedProducts() {
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// given
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Product product1 = new Product(
44+
UUID.randomUUID(),
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"iphone",
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"bardnjknjkndsjknkjnajkndjksandsajkndkjasnkdjank",
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new BigDecimal("1000"),
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"https://amigoscode.com/logo.png",
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10
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);
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Product product2 = new Product(
53+
UUID.randomUUID(),
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"samsung",
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"bardnjknjkndsjknkjnajkndjksandsajkndkjasnkdjank",
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new BigDecimal("1200"),
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"https://amigoscode.com/logo.png",
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5
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);
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product2.setPublished(false);
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62+
Product product3 = new Product(
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UUID.randomUUID(),
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"watch",
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"bardnjknjkndsjknkjnajkndjksandsajkndkjasnkdjank",
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new BigDecimal("5000"),
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"https://amigoscode.com/logo.png",
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0
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);
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Product product4 = new Product(
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UUID.randomUUID(),
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"PS5",
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"bardnjknjkndsjknkjnajkndjksandsajkndkjasnkdjank",
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new BigDecimal("300"),
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"https://amigoscode.com/logo.png",
77+
90
78+
);
79+
80+
underTest.saveAll(
81+
List.of(product1, product2, product3, product4)
82+
);
83+
// when
84+
List<Product> availablePublishedProducts =
85+
underTest.findAvailablePublishedProducts();
86+
// then
87+
assertThat(availablePublishedProducts)
88+
.usingRecursiveFieldByFieldElementComparatorIgnoringFields(
89+
"updatedAt", "createdAt"
90+
)
91+
.containsExactly(
92+
product4, product1
93+
);
94+
}
95+
}

‎src/test/java/com/amigoscode/product/ProductServiceTest.java‎

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package com.amigoscode.product;
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3+
import com.amigoscode.SharedPostgresContainer;
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import org.junit.jupiter.api.BeforeAll;
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import org.junit.jupiter.api.BeforeEach;
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import org.junit.jupiter.api.Disabled;
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import org.junit.jupiter.api.Test;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.boot.test.autoconfigure.jdbc.AutoConfigureTestDatabase;
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import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
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import org.springframework.boot.testcontainers.service.connection.ServiceConnection;
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import org.springframework.context.annotation.Import;
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import org.testcontainers.junit.jupiter.Container;
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import org.testcontainers.junit.jupiter.Testcontainers;
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16+
import java.math.BigDecimal;
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import java.util.List;
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import java.util.UUID;
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20+
import static org.assertj.core.api.Assertions.assertThat;
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22+
@DataJpaTest
23+
@AutoConfigureTestDatabase(
24+
replace = AutoConfigureTestDatabase.Replace.NONE
25+
)
26+
@Import({
27+
ProductService.class
28+
})
29+
@Testcontainers
30+
class ProductServiceTest {
31+
32+
@Container
33+
@ServiceConnection
34+
private static final SharedPostgresContainer POSTGRES =
35+
SharedPostgresContainer.getInstance();
36+
37+
@Autowired
38+
private ProductRepository productRepository;
39+
40+
@Autowired
41+
private ProductService underTest;
42+
43+
@BeforeAll
44+
static void beforeAll() {
45+
System.out.println(POSTGRES.getDatabaseName());
46+
System.out.println(POSTGRES.getJdbcUrl());
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System.out.println(POSTGRES.getPassword());
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System.out.println(POSTGRES.getDriverClassName());
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System.out.println(POSTGRES.getTestQueryString());
50+
}
51+
52+
@BeforeEach
53+
void setUp() {
54+
productRepository.deleteAll();
55+
}
56+
57+
@Test
58+
@Disabled
59+
void canGetAllProducts() {
60+
// given
61+
Product product = new Product(
62+
UUID.randomUUID(),
63+
"foo",
64+
"bardnjknjkndsjknkjnajkndjksandsajkndkjasnkdjank",
65+
BigDecimal.TEN,
66+
"https://amigoscode.com/logo.png",
67+
10
68+
);
69+
70+
productRepository.save(product);
71+
72+
// when
73+
List<ProductResponse> allProducts =
74+
underTest.getAllProducts();
75+
// then
76+
ProductResponse expected = underTest.mapToResponse().apply(product);
77+
78+
assertThat(allProducts)
79+
.usingRecursiveFieldByFieldElementComparatorIgnoringFields(
80+
"updatedAt", "createdAt"
81+
)
82+
.containsOnly(expected);
83+
84+
}
85+
86+
@Test
87+
@Disabled
88+
void getProductById() {
89+
// given
90+
// when
91+
// then
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}
93+
94+
@Test
95+
@Disabled
96+
void deleteProductById() {
97+
// given
98+
// when
99+
// then
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}
101+
102+
@Test
103+
@Disabled
104+
void saveNewProduct() {
105+
// given
106+
// when
107+
// then
108+
}
109+
110+
@Test
111+
@Disabled
112+
void updateProduct() {
113+
// given
114+
// when
115+
// then
116+
}
117+
}

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