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Commit 1c707e9

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Test Hackerrank Inventory API
Get inventory from barcode
1 parent 8a50c48 commit 1c707e9

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6 files changed

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-0
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6 files changed

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package hackerrank.api;
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public class BarcodeNotFoundException extends NullPointerException {
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public BarcodeNotFoundException(String errorMessage) {
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super(errorMessage);
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}
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}
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package hackerrank.api;
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import com.fasterxml.jackson.core.JsonProcessingException;
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import com.fasterxml.jackson.databind.DeserializationFeature;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import com.sun.net.httpserver.HttpHandler;
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import java.io.IOException;
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import java.net.MalformedURLException;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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public class BarcodeReader {
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private static final String TAG = HttpHandler.class.getSimpleName();
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private final static Logger logger =
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Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
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private final String barcodeURI = "https://jsonmock.hackerrank.com/api/inventory?barcode=";
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private Inventory inventory;
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public Inventory read(int barcode)
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throws BarcodeNotFoundException {
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Inventory[] inventories = null;
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try {
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String inventoryJSONString = InputStreamConverter.toString(
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HttpRequests.get(barcodeURI+barcode))
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.toString();
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inventories = getInventories(inventoryJSONString);
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} catch (MalformedURLException e) {
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logger.log(Level.WARNING, TAG + " MalformedURLException: " + e.getMessage());
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} catch (IOException e) {
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logger.log(Level.WARNING, TAG + " IOException: " + e.getMessage());
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} catch (Exception e) {
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logger.log(Level.WARNING, TAG + " Exception: " + e.getMessage());
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}
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if ( inventories.length == 0 )
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throw new BarcodeNotFoundException("Barcode Not Found!");
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return inventories[0];
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}
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private Inventory[] getInventories(String inventories)
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throws JsonProcessingException {
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ObjectMapper objectMapper = new ObjectMapper();
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objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
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objectMapper.configure(DeserializationFeature.FAIL_ON_NULL_FOR_PRIMITIVES, false);
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objectMapper.configure(DeserializationFeature.USE_JAVA_ARRAY_FOR_JSON_ARRAY, true);
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return objectMapper
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.readValue(inventories,
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Inventory[].class);
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}
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}
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package hackerrank.api;
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import java.io.IOException;
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import java.io.InputStream;
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import java.net.HttpURLConnection;
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import java.net.URL;
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class HttpRequests {
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public static InputStream get(String url)
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throws IOException {
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InputStream inputStream = null;
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URL urlObject = new URL(url);
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HttpURLConnection conn = (HttpURLConnection) urlObject.openConnection();
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conn.setRequestMethod("GET");
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inputStream = conn.getInputStream();
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return inputStream;
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}
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}
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package hackerrank.api;
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import org.json.JSONArray;
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import org.json.JSONObject;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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class InputStreamConverter {
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public static String toString(InputStream is) {
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StringBuilder sb = new StringBuilder();
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String jsonString = null;
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String line;
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try (BufferedReader reader = new BufferedReader(
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new InputStreamReader(is))) {
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while ((line = reader.readLine()) != null) {
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sb.append(line).append('\n');
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}
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JSONObject json = new JSONObject(sb.toString());
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JSONArray dataArray = (JSONArray) json.get("data");
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jsonString = dataArray.toString();
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} catch (IOException e) {
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e.printStackTrace();
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}
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return jsonString;
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}
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}
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package hackerrank.api;
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import com.sun.net.httpserver.HttpHandler;
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import java.util.logging.Logger;
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public class Inventory {
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private final static Logger logger =
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Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
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private static final String TAG = HttpHandler.class.getSimpleName();
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private final String URL = "https://jsonmock.hackerrank.com/api/inventory?barcode=";
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String item;
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int price;
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int available;
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int discount;
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String category;
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int barcode;
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public String getItem() {
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return item;
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}
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public void setItem(String item) {
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this.item = item;
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}
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public int getPrice() {
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return price;
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}
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public void setPrice(int price) {
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this.price = price;
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}
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public int getAvailable() {
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return available;
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}
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public void setAvailable(int available) {
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this.available = available;
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}
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public int getDiscount() {
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return discount;
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}
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public void setDiscount(int discount) {
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this.discount = discount;
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}
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public String getCategory() {
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return category;
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}
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public void setCategory(String category) {
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this.category = category;
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}
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public int getBarcode() {
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return barcode;
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}
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public void setBarcode(int barcode) {
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this.barcode = barcode;
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}
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}
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package hackerranktest.api;
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import hackerrank.api.BarcodeNotFoundException;
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import hackerrank.api.BarcodeReader;
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import hackerrank.api.Inventory;
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import org.junit.jupiter.api.Assertions;
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import org.junit.jupiter.api.Test;
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public class BarcodeReaderTest {
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@Test
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void givenBarCodeListData() {
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int barcode = 74001755;
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BarcodeReader obj = new BarcodeReader();
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Inventory actualArr = obj.read(barcode);
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Assertions.assertEquals(74001755, actualArr.getBarcode());
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}
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@Test
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void barcodeEmptyException() {
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Exception exception = Assertions.assertThrows(
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BarcodeNotFoundException.class, () -> {
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BarcodeReader br = new BarcodeReader();
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br.read(0);
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});
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String expectedMessage = "Barcode Not Found!";
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String actualMessage = exception.getMessage();
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Assertions.assertTrue(actualMessage.contains(expectedMessage));
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}
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}

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