Fix unstable tests

Author: adimiz1

cloudinary-test-common/src/main/java/com/cloudinary/test/AbstractApiTest.java

@@ -4,7 +4,7 @@
 import com.cloudinary.api.ApiResponse;
 import com.cloudinary.api.exceptions.BadRequest;
 import com.cloudinary.api.exceptions.NotFound;
-import com.cloudinary.metadata.StringMetadataField;
+import com.cloudinary.test.rules.RetryRule;
 import com.cloudinary.transformation.TextLayer;
 import com.cloudinary.utils.ObjectUtils;
 import org.junit.*;
@@ -53,6 +53,8 @@ abstract public class AbstractApiTest extends MockableTest {
     private static String assetId1;
     private static String assetId2;
 
+    private static final int SLEEP_TIMEOUT = 5000;
+
 
     protected Api api;
 
@@ -137,6 +139,9 @@ public static void tearDownClass() {
     @Rule
     public TestName currentTest = new TestName();
 
+    @Rule
+    public RetryRule retryRule = new RetryRule();
+
     @Before
     public void setUp() {
         System.out.println("Running " + this.getClass().getName() + "." + currentTest.getMethodName());
@@ -909,8 +914,10 @@ public void testRestoreDifferentVersionsOfDeletedAsset() throws Exception {
                         "tags", UPLOAD_TAGS
                 ));
         assertEquals(firstUpload.get("public_id"), TEST_RESOURCE_PUBLIC_ID);
+        Thread.sleep(SLEEP_TIMEOUT);
         ApiResponse firstDelete = api.deleteResources(Collections.singletonList(TEST_RESOURCE_PUBLIC_ID), ObjectUtils.emptyMap());
         assertTrue(firstDelete.containsKey("deleted"));
+        Thread.sleep(SLEEP_TIMEOUT);
 
         Map secondUpload = uploader.upload(SRC_TEST_IMAGE,
                 ObjectUtils.asMap(
@@ -920,13 +927,15 @@ public void testRestoreDifferentVersionsOfDeletedAsset() throws Exception {
                         "tags", UPLOAD_TAGS
                 ));
         assertEquals(secondUpload.get("public_id"), TEST_RESOURCE_PUBLIC_ID);
+        Thread.sleep(SLEEP_TIMEOUT);
         ApiResponse secondDelete = api.deleteResources(Collections.singletonList(TEST_RESOURCE_PUBLIC_ID), ObjectUtils.emptyMap());
         assertTrue(secondDelete.containsKey("deleted"));
-
+        Thread.sleep(SLEEP_TIMEOUT);
         assertNotEquals(firstUpload.get("bytes"), secondUpload.get("bytes"));
 
         ApiResponse getVersionsResp = api.resource(TEST_RESOURCE_PUBLIC_ID, ObjectUtils.asMap("versions", true));
         List<Map> versions = (List<Map>) getVersionsResp.get("versions");
+        Assert.assertTrue(versions.size() > 1);
         Object firstAssetVersion = versions.get(0).get("version_id");
         Object secondAssetVersion = versions.get(1).get("version_id");
 
@@ -937,7 +946,7 @@ public void testRestoreDifferentVersionsOfDeletedAsset() throws Exception {
         ApiResponse secondVerRestore = api.restore(Collections.singletonList(TEST_RESOURCE_PUBLIC_ID),
                 ObjectUtils.asMap("versions", Collections.singletonList(secondAssetVersion)));
         assertEquals(((Map) secondVerRestore.get(TEST_RESOURCE_PUBLIC_ID)).get("bytes"), secondUpload.get("bytes"));
-
+        Thread.sleep(SLEEP_TIMEOUT);
         ApiResponse finalDeleteResp = api.deleteResources(Collections.singletonList(TEST_RESOURCE_PUBLIC_ID), ObjectUtils.emptyMap());
         assertTrue(finalDeleteResp.containsKey("deleted"));
     }
@@ -1157,7 +1166,7 @@ public void testQualityAnalysis() throws Exception {
     public void testDeleteFolder() throws Exception {
         String toDelete = "todelete_" + SUFFIX;
         Map uploadResult = cloudinary.uploader().upload(SRC_TEST_IMAGE, asMap("tags", UPLOAD_TAGS, "folder", toDelete));
-        Thread.sleep(5000);
+        Thread.sleep(SLEEP_TIMEOUT);
         api.deleteResources(Collections.singletonList(uploadResult.get("public_id").toString()), emptyMap());
         ApiResponse result = api.deleteFolder(toDelete, emptyMap());
         assertTrue(((ArrayList) result.get("deleted")).contains(toDelete));

cloudinary-test-common/src/main/java/com/cloudinary/test/AbstractUploaderTest.java

@@ -3,6 +3,7 @@
 import com.cloudinary.*;
 import com.cloudinary.api.ApiResponse;
 import com.cloudinary.metadata.StringMetadataField;
+import com.cloudinary.test.rules.RetryRule;
 import com.cloudinary.utils.ObjectUtils;
 import com.cloudinary.utils.Rectangle;
 import org.cloudinary.json.JSONArray;
@@ -81,6 +82,9 @@ public static void tearDownClass() {
     @Rule
     public TestName currentTest = new TestName();
 
+    @Rule
+    public RetryRule retryRule = new RetryRule();
+
     @Before
     public void setUp() {
         System.out.println("Running " + this.getClass().getName() + "." + currentTest.getMethodName());

cloudinary-test-common/src/main/java/com/cloudinary/test/rules/RetryRule.java

@@ -0,0 +1,47 @@
+package com.cloudinary.test.rules;
+
+import org.junit.rules.TestRule;
+import org.junit.runner.Description;
+import org.junit.runners.model.Statement;
+
+import java.util.Objects;
+
+public class RetryRule implements TestRule {
+    private int retryCount;
+    private int delay;
+
+    public RetryRule(int retryCount, int delay) {
+        this.retryCount = retryCount;
+        this.delay = delay;
+    }
+
+    public RetryRule() {
+        this.retryCount = 3;
+        this.delay = 3;
+    }
+
+    public Statement apply(Statement base, Description description) {
+        return statement(base, description);
+    }
+
+    private Statement statement(final Statement base, final Description description) {
+        return new Statement() {
+            @Override
+            public void evaluate() throws Throwable {
+                Throwable caughtThrowable = null;
+                for (int i = 0; i < retryCount; i++) {
+                    try {
+                        base.evaluate();
+                        return;
+                    } catch (Throwable t) {
+                        caughtThrowable = t;
+                        System.err.println(description.getDisplayName() + ": run " + (i + 1) + " failed.");
+                        Thread.sleep(delay * 1000);
+                    }
+                }
+                System.err.println(description.getDisplayName() + ": Giving up after " + retryCount + " failures.");
+                throw Objects.requireNonNull(caughtThrowable);
+            }
+        };
+    }
+}