fix: adiciona teste no repositorio de produto

README.md

@@ -18,6 +18,14 @@ A simple REST application with Kotlin
 ./gradlew clean build
 ```
 
+## Testing Application
+
+```console
+./gradlew clean test
+```
+
+Minimum coverage is 80%, and report in _build/jacocoHtml/index.html_
+
 ## Running Application
 
 ```console

build.gradle

@@ -6,7 +6,7 @@ plugins {
 
 mainClassName = 'br.com.dev.shoppingcart.AppKt'
 group = 'br.com.dev'
-version = '2.1.2'
+version = '2.1.3'
 
 repositories {
  mavenCentral()

src/main/kotlin/br/com/dev/shoppingcart/domain/repository/ProductRepository.kt

@@ -5,7 +5,7 @@ import br.com.dev.shoppingcart.web.dto.ProductDTO
 
 class ProductRepository(private val products: MutableList<Product>) {
 
- fun findProductById(productId: Long) = products.firstOrNull {
+ fun findProductById(productId: Long): Product? = products.firstOrNull {
  it.id == productId
  }
 

src/test/kotlin/br/com/dev/shoppingcart/domain/repository/CartRepositoryTest.kt

@@ -6,7 +6,6 @@ import br.com.dev.shoppingcart.domain.model.Product
 import io.mockk.impl.annotations.MockK
 import io.mockk.junit5.MockKExtension
 import org.assertj.core.api.Assertions.assertThat
-import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.extension.ExtendWith
 
@@ -15,20 +14,12 @@ internal class CartRepositoryTest {
 
  private lateinit var cut: CartRepository
 
- @MockK
- private lateinit var carts: MutableList<Cart>
-
  @MockK
  private lateinit var cartProducts: MutableList<CartProduct>
 
  @MockK
  private lateinit var products: MutableList<Product>
 
- @BeforeEach
- fun setUp() {
- this.cut = CartRepository(carts, cartProducts, products)
- }
-
  @Test
  fun `given an user id if it exists must return a list of carts`() {
  // arrange

src/test/kotlin/br/com/dev/shoppingcart/domain/repository/ProductRepositoryTest.kt

@@ -0,0 +1,70 @@
+package br.com.dev.shoppingcart.domain.repository
+
+import br.com.dev.shoppingcart.domain.model.Product
+import br.com.dev.shoppingcart.mocks.ProductMock
+import br.com.dev.shoppingcart.web.dto.ProductDTO
+import org.assertj.core.api.Assertions.assertThat
+import org.junit.jupiter.api.Test
+
+internal class ProductRepositoryTest {
+
+ private lateinit var cut: ProductRepository
+
+ @Test
+ fun `given a product id when a product with that id exists must return it`() {
+ // arrange
+ this.cut = ProductRepository(ProductMock.getListWithThreeProducts())
+
+ // act
+ val product = this.cut.findProductById(1)
+
+ // assert
+ assertThat(product).isNotNull
+ assertThat(product?.id).isEqualTo(1)
+ }
+
+ @Test
+ fun `given a product id when a product with that id does not exists must return null`() {
+ // arrange
+ this.cut = ProductRepository(ProductMock.getListWithThreeProducts())
+
+ // act
+ val product = this.cut.findProductById(100)
+
+ // assert
+ assertThat(product).isNull()
+ }
+
+ @Test
+ fun `given an empty list of products when adding a new one must be of size one and id 1`() {
+ // arrange
+ val products = mutableListOf<Product>()
+ this.cut = ProductRepository(products)
+
+ // act
+ val product =
+ this.cut.saveProduct(ProductDTO(name = "Test", price = 100.0, description = "", category = "test"))
+
+ // assert
+ assertThat(product).isNotNull
+ assertThat(product.id).isEqualTo(1)
+
+ assertThat(products).size().isEqualTo(1)
+ }
+
+ @Test
+ fun `given a list of products with one element when adding a new one must be of size two`() {
+ // arrange
+ val products = ProductMock.getListWithOneProduct()
+
+ this.cut = ProductRepository(products)
+
+ // act
+ val product =
+ this.cut.saveProduct(ProductDTO(name = "Test", price = 100.0, description = "", category = "test"))
+
+ // assert
+ assertThat(product).isNotNull
+ assertThat(products).size().isEqualTo(2)
+ }
+}

src/test/kotlin/br/com/dev/shoppingcart/mocks/ProductMock.kt

@@ -8,9 +8,9 @@ object ProductMock {
  fun getOneProductWithShorts() = Product(2, "Shorts", 20.00, "", "Vestuário")
  fun getOneProductWithTenis() = Product(3, "Tênis", 159.00, "", "Vestuário")
 
- fun getListWithOneProduct() = listOf(Product(1, "Camiseta", 100.00, "", "Vestuário"))
+ fun getListWithOneProduct() = mutableListOf(Product(1, "Camiseta", 100.00, "", "Vestuário"))
 
- fun getListWithThreeProducts() = listOf(
+ fun getListWithThreeProducts() = mutableListOf(
  getOneProductWithCamiseta(),
  getOneProductWithShorts(),
  getOneProductWithTenis()