#39 Added some unit tests
This commit is contained in:
Marvin Scham
@@ -1,6 +1,16 @@
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package de.rwu.easydrop.api;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertThrows;
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import static org.mockito.ArgumentMatchers.any;
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import static org.mockito.ArgumentMatchers.anyString;
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import static org.mockito.Mockito.mock;
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import static org.mockito.Mockito.when;
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import java.io.ByteArrayInputStream;
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import java.io.IOException;
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import java.lang.reflect.Field;
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import java.net.HttpURLConnection;
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import java.net.MalformedURLException;
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import java.net.URL;
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@@ -10,34 +20,36 @@ import org.junit.jupiter.api.Test;
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import org.mockito.MockitoAnnotations;
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import de.rwu.easydrop.api.client.AmazonProductDataSource;
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import de.rwu.easydrop.api.dto.ProductDTO;
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public class AmazonProductDataSourceTest {
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private AmazonProductDataSource dataSource;
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private AmazonProductDataSource demoDataSource;
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private static String demoApiKey = "my-api-key";
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private static String demoApiUrl = "https://www.example.com/api";
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private static String demoDataOrigin = "Amazon";
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private static String demoProductId = "whateverId";
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@BeforeEach
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public void setup() {
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dataSource = new AmazonProductDataSource(
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"https://www.example.com/api",
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"my-api-key");
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demoDataSource = new AmazonProductDataSource(
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demoApiUrl,
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demoApiKey);
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MockitoAnnotations.openMocks(this);
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}
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@Test
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public void testConstructor() {
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// Arrange
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String baseUrl = "https://www.example.com/api";
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String apiKey = "my-api-key";
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// Assert
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try {
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Field baseUrlField = AmazonProductDataSource.class.getDeclaredField("baseUrl");
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baseUrlField.setAccessible(true);
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Assertions.assertEquals(baseUrl, baseUrlField.get(dataSource));
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Assertions.assertEquals(demoApiUrl, baseUrlField.get(demoDataSource));
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Field apiKeyField = AmazonProductDataSource.class.getDeclaredField("apiKey");
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apiKeyField.setAccessible(true);
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Assertions.assertEquals(apiKey, apiKeyField.get(dataSource));
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Assertions.assertEquals(demoApiKey, apiKeyField.get(demoDataSource));
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} catch (NoSuchFieldException e) {
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Assertions.fail();
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} catch (IllegalAccessException e) {
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@@ -51,14 +63,128 @@ public class AmazonProductDataSourceTest {
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String productId1 = "12345";
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URL expectedUrl1 = new URL(
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"https://www.example.com/api/products/2020-08-26/products/12345/offers?productRegion=DE&locale=de_DE");
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URL createdUrl1 = dataSource.createApiUrl(productId1);
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URL createdUrl1 = demoDataSource.createApiUrl(productId1);
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Assertions.assertEquals(expectedUrl1, createdUrl1);
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// Test case 2
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String productId2 = "67890";
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URL expectedUrl2 = new URL(
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"https://www.example.com/api/products/2020-08-26/products/67890/offers?productRegion=DE&locale=de_DE");
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URL createdUrl2 = dataSource.createApiUrl(productId2);
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"https://www.example.com/api/products/2020-08-26/"
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+ "products/67890/offers?productRegion=DE&locale=de_DE");
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URL createdUrl2 = demoDataSource.createApiUrl(productId2);
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Assertions.assertEquals(expectedUrl2, createdUrl2);
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}
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@Test
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public void testBuildProductDTO_completeData() {
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// Set up the test environment
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String json = "{\"featuredOffer\": {\"availability\": \"available\"," +
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"\"price\": {\"value\": {\"amount\": 10.0}}," +
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"\"shippingOptions\": [{\"shippingCost\": {\"value\": {\"amount\": 2.5}}}], " +
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"\"merchant\": {\"name\": \"Merchant A\"}}}";
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ProductDTO product = new ProductDTO(demoProductId, demoDataOrigin);
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// Invoke the method
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ProductDTO result = demoDataSource.buildProductDTO(product, json);
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// Verify the product DTO properties
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assertEquals(demoDataOrigin, result.getDataOrigin());
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assertEquals(true, result.isAvailable());
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assertEquals(10.0, result.getCurrentPrice());
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assertEquals(2.5, result.getDeliveryPrice());
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assertEquals("Merchant A", result.getMerchant());
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}
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@Test
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public void testBuildProductDTO_incompleteData() {
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// Set up the test environment
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String json = "{\"otherOffer\": {\"availability\": \"available\"," +
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"\"price\": {\"value\": {\"amount\": 10.0}}," +
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"\"shippingOptions\": [{\"shippingCost\": {\"value\": {\"amount\": 2.5}}}], " +
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"\"merchant\": {\"name\": \"Merchant A\"}}}";
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ProductDTO product = new ProductDTO(demoProductId, demoDataOrigin);
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// Invoke the method
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ProductDTO result = demoDataSource.buildProductDTO(product, json);
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// Verify that the product DTO remains unchanged
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assertEquals(demoDataOrigin, result.getDataOrigin());
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assertEquals(false, result.isAvailable());
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assertEquals(0.0, result.getCurrentPrice());
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assertEquals(0.0, result.getDeliveryPrice());
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assertEquals(null, result.getMerchant());
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}
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@Test
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public void testGetProductDTOById_successfulRequest() throws IOException {
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// Set up the test environment
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String mockResponse = "{\"featuredOffer\": {\"availability\": \"available\"," +
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"\"price\": {\"value\": {\"amount\": 10.0}}," +
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"\"shippingOptions\": [{\"shippingCost\": {\"value\": {\"amount\": 2.5}}}], " +
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"\"merchant\": {\"name\": \"Merchant A\"}}}";
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AmazonProductDataSource dataSource = mock(AmazonProductDataSource.class);
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URL mockURL = mock(URL.class);
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when(dataSource.createApiUrl(demoProductId)).thenReturn(mockURL);
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when(dataSource.buildProductDTO(any(), anyString())).thenCallRealMethod();
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HttpURLConnection mockConnection = mock(HttpURLConnection.class);
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when(mockURL.openConnection()).thenReturn(mockConnection);
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when(mockConnection.getResponseCode()).thenReturn(HttpURLConnection.HTTP_OK);
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when(mockConnection.getInputStream()).thenReturn(new ByteArrayInputStream(mockResponse.getBytes()));
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when(dataSource.getProductDTOById(demoProductId)).thenCallRealMethod();
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// Invoke the method
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ProductDTO result = dataSource.getProductDTOById(demoProductId);
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// Verify the product DTO properties
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assertEquals(demoProductId, result.getProductId());
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assertEquals("Amazon", result.getDataOrigin());
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assertEquals(true, result.isAvailable());
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assertEquals(10.0, result.getCurrentPrice());
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assertEquals(2.5, result.getDeliveryPrice());
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assertEquals("Merchant A", result.getMerchant());
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}
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@Test
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public void testGetProductDTOById_failedRequest() throws IOException {
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// Set up the test environment
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AmazonProductDataSource dataSource = mock(AmazonProductDataSource.class);
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URL mockURL = mock(URL.class);
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when(dataSource.createApiUrl(demoProductId)).thenReturn(mockURL);
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when(dataSource.getProductDTOById(demoProductId)).thenCallRealMethod();
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HttpURLConnection mockConnection = mock(HttpURLConnection.class);
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when(mockURL.openConnection()).thenReturn(mockConnection);
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when(mockConnection.getResponseCode()).thenReturn(HttpURLConnection.HTTP_NOT_FOUND);
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// Invoke the method and verify the exception
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IllegalArgumentException exception = assertThrows(IllegalArgumentException.class, () -> {
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dataSource.getProductDTOById(demoProductId);
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});
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// Verify the exception message
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assertEquals("Nothing found: Amazon API responded with error code 404", exception.getMessage());
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}
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@Test
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public void testGetProductDTOById_ioException() throws IOException {
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// Set up the test environment
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AmazonProductDataSource dataSource = mock(AmazonProductDataSource.class);
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URL mockURL = mock(URL.class);
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when(dataSource.createApiUrl(demoProductId)).thenReturn(mockURL);
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when(dataSource.getProductDTOById(demoProductId)).thenCallRealMethod();
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when(dataSource.buildProductDTO(any(), anyString())).thenCallRealMethod();
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HttpURLConnection mockConnection = mock(HttpURLConnection.class);
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when(mockURL.openConnection()).thenReturn(mockConnection);
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when(mockConnection.getResponseCode()).thenReturn(HttpURLConnection.HTTP_OK);
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when(mockConnection.getInputStream()).thenThrow(new IOException());
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// Invoke the method and verify the exception
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IllegalArgumentException exception = assertThrows(IllegalArgumentException.class, () -> {
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dataSource.getProductDTOById(demoProductId);
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});
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// Verify the exception message
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assertEquals("Couldn't fulfill Amazon API request", exception.getMessage());
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}
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}
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