feat: extend offer call builder to return a single offer.

lightsail-network · Feb 19, 2020 · 4682ea8 · 4682ea8
1 parent 1a200dd
commit 4682ea8
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Showing 2 changed files with 76 additions and 1 deletion.
diff --git a/src/main/java/org/stellar/sdk/requests/OffersRequestBuilder.java b/src/main/java/org/stellar/sdk/requests/OffersRequestBuilder.java
@@ -22,6 +22,32 @@ public OffersRequestBuilder(OkHttpClient httpClient, HttpUrl serverURI) {
     super(httpClient, serverURI, "offers");
   }
 
+  /**
+   * Requests specific <code>uri</code> and returns {@link OfferResponse}.
+   * This method is helpful for getting the links.
+   * @throws IOException
+   */
+  public OfferResponse offer(HttpUrl uri) throws IOException {
+    TypeToken type = new TypeToken<OfferResponse>() {};
+    ResponseHandler<OfferResponse> responseHandler = new ResponseHandler<OfferResponse>(type);
+
+    Request request = new Request.Builder().get().url(uri).build();
+    Response response = httpClient.newCall(request).execute();
+
+    return responseHandler.handleResponse(response);
+  }
+
+  /**
+   * The offer details endpoint provides information on a single offer.
+   * @param offerId specifies which offer to load.
+   * @return The offer details.
+   * @throws IOException
+   */
+  public OfferResponse offer(long offerId) throws IOException {
+    this.setSegments("offers", String.valueOf(offerId));
+    return this.offer(this.buildUri());
+  }
+
   /**
    * @param account Account for which to get offers
    * @see <a href="https://www.stellar.org/developers/horizon/reference/offers-for-account.html">Offers for Account</a>

diff --git a/src/test/java/org/stellar/sdk/requests/OffersRequestBuilderTest.java b/src/test/java/org/stellar/sdk/requests/OffersRequestBuilderTest.java
@@ -1,12 +1,49 @@
 package org.stellar.sdk.requests;
 
 import okhttp3.HttpUrl;
+import okhttp3.mockwebserver.MockResponse;
+import okhttp3.mockwebserver.MockWebServer;
+import okhttp3.mockwebserver.RecordedRequest;
 import org.junit.Test;
-import org.stellar.sdk.*;
+import org.stellar.sdk.Asset;
+import org.stellar.sdk.AssetTypeCreditAlphaNum4;
+import org.stellar.sdk.Server;
+
+import java.io.IOException;
 
 import static org.junit.Assert.assertEquals;
 
 public class OffersRequestBuilderTest {
+  private static final String offerResponse = "{\n" +
+          "\"_links\": {\n" +
+          "\"self\": {\n" +
+          "\"href\": \"https://horizon.stellar.org/offers/784340\"\n" +
+          "},\n" +
+          "\"offer_maker\": {\n" +
+          "\"href\": \"https://horizon.stellar.org/accounts/GD66B4ONNNI2WWLILFY4ZPHY4RGJTBDPKG4JID6KF75VIVIJSYXV4CAT\"\n" +
+          "}\n" +
+          "},\n" +
+          "\"id\": 784340,\n" +
+          "\"paging_token\": \"784340\",\n" +
+          "\"seller\": \"GD66B4ONNNI2WWLILFY4ZPHY4RGJTBDPKG4JID6KF75VIVIJSYXV4CAT\",\n" +
+          "\"selling\": {\n" +
+          "\"asset_type\": \"native\"\n" +
+          "},\n" +
+          "\"buying\": {\n" +
+          "\"asset_type\": \"credit_alphanum4\",\n" +
+          "\"asset_code\": \"XCN\",\n" +
+          "\"asset_issuer\": \"GCNY5OXYSY4FKHOPT2SPOQZAOEIGXB5LBYW3HVU3OWSTQITS65M5RCNY\"\n" +
+          "},\n" +
+          "\"amount\": \"2000.0000000\",\n" +
+          "\"price_r\": {\n" +
+          "\"n\": 5,\n" +
+          "\"d\": 1\n" +
+          "},\n" +
+          "\"price\": \"5.0000000\",\n" +
+          "\"last_modified_ledger\": 19967410,\n" +
+          "\"last_modified_time\": \"2018-09-13T16:00:06Z\"\n" +
+          "}";
+
   @Test
   public void testForAccount() {
     Server server = new Server("https://horizon-testnet.stellar.org");
@@ -47,4 +84,16 @@ public void testForBuyingAsset() {
     HttpUrl uri = server.offers().forBuyingAsset(buying).buildUri();
     assertEquals("https://horizon-testnet.stellar.org/offers?buying_asset_type=credit_alphanum4&buying_asset_code=XCN&buying_asset_issuer=GCNY5OXYSY4FKHOPT2SPOQZAOEIGXB5LBYW3HVU3OWSTQITS65M5RCNY", uri.toString());
   }
+
+  @Test
+  public void testOffer() throws IOException, InterruptedException {
+    MockWebServer mockWebServer = new MockWebServer();
+    mockWebServer.enqueue(new MockResponse().setResponseCode(200).setBody(offerResponse));
+    String mockUrl = String.format("http://%s:%d", mockWebServer.getHostName(), mockWebServer.getPort());
+    Server server = new Server(mockUrl);
+    long offerId = 784340L;
+    server.offers().offer(offerId);
+    RecordedRequest recordedRequest = mockWebServer.takeRequest();
+    assertEquals(String.format("/offers/%s", offerId), recordedRequest.getPath());
+  }
 }