[Bot-AI-QnA] Fix disparities (#1214)

* Remove testData to be renamed

* Rename testData to testdata in order to be consistent with other Java libraries

* Fix typo in javadoc

* Consistency of StringUtils

* Make props as final

* Update property from 0.4 to 0.42

libraries/bot-ai-qna/src/main/java/com/microsoft/bot/ai/qna/QnAMaker.java

@@ -33,7 +33,6 @@ import java.util.Map.Entry;
 import java.util.concurrent.CompletableFuture;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
-import com.google.common.base.Strings;
 import org.apache.commons.lang3.StringUtils;
 import org.slf4j.LoggerFactory;
 
@@ -91,15 +90,15 @@ public class QnAMaker implements QnAMakerClient, TelemetryQnAMaker {
         }
         this.endpoint = withEndpoint;
 
-        if (Strings.isNullOrEmpty(this.endpoint.getKnowledgeBaseId())) {
+        if (StringUtils.isBlank(this.endpoint.getKnowledgeBaseId())) {
             throw new IllegalArgumentException("knowledgeBaseId");
         }
 
-        if (Strings.isNullOrEmpty(this.endpoint.getHost())) {
+        if (StringUtils.isBlank(this.endpoint.getHost())) {
             throw new IllegalArgumentException("host");
         }
 
-        if (Strings.isNullOrEmpty(this.endpoint.getEndpointKey())) {
+        if (StringUtils.isBlank(this.endpoint.getEndpointKey())) {
             throw new IllegalArgumentException("endpointKey");
         }
 
@@ -222,7 +221,7 @@ public class QnAMaker implements QnAMakerClient, TelemetryQnAMaker {
             return Async.completeExceptionally(new IllegalArgumentException("Activity type is not a message"));
         }
 
-        if (Strings.isNullOrEmpty(turnContext.getActivity().getText())) {
+        if (StringUtils.isBlank(turnContext.getActivity().getText())) {
             return Async.completeExceptionally(new IllegalArgumentException("Null or empty text"));
         }
 

libraries/bot-ai-qna/src/main/java/com/microsoft/bot/ai/qna/models/FeedbackRecord.java

@@ -19,7 +19,7 @@ public class FeedbackRecord {
     private Integer qnaId;
 
     /**
-     * Gets the feedback recod's user ID.
+     * Gets the feedback record's user ID.
      *
      * @return The user ID.
      */
@@ -28,7 +28,7 @@ public class FeedbackRecord {
     }
 
     /**
-     * Sets the feedback recod's user ID.
+     * Sets the feedback record's user ID.
      *
      * @param withUserId The user ID.
      */

libraries/bot-ai-qna/src/main/java/com/microsoft/bot/ai/qna/utils/BindToActivity.java

@@ -14,7 +14,7 @@ import javax.annotation.Nullable;
  * Class to bind activities.
  */
 public class BindToActivity {
-    private Activity activity;
+    private final Activity activity;
 
     /**
      * Construct to bind an Activity.

libraries/bot-ai-qna/src/main/java/com/microsoft/bot/ai/qna/utils/HttpRequestUtils.java

@@ -24,7 +24,7 @@ import org.slf4j.LoggerFactory;
  * Helper for HTTP requests.
  */
 public class HttpRequestUtils {
-    private OkHttpClient httpClient = new OkHttpClient();
+    private final OkHttpClient httpClient = new OkHttpClient();
 
     /**
      * Execute Http request.

libraries/bot-ai-qna/src/test/java/com/microsoft/bot/ai/qna/QnAMakerRecognizerTests.java

@@ -219,7 +219,7 @@ public class QnAMakerRecognizerTests {
 
     private String readFileContent (String fileName) throws IOException {
         String path = Paths.get("", "src", "test", "java", "com", "microsoft", "bot", "ai", "qna",
-            "testData", fileName).toAbsolutePath().toString();
+            "testdata", fileName).toAbsolutePath().toString();
         File file = new File(path);
         return FileUtils.readFileToString(file, "utf-8");
     }

libraries/bot-ai-qna/src/test/java/com/microsoft/bot/ai/qna/QnAMakerTests.java

@@ -1109,7 +1109,7 @@ public class QnAMakerTests {
 
             QnAMakerOptions allChangedRequestOptions = new QnAMakerOptions();
             allChangedRequestOptions.setTop(2000);
-            allChangedRequestOptions.setScoreThreshold(0.4f);
+            allChangedRequestOptions.setScoreThreshold(0.42f);
             allChangedRequestOptions.setStrictFilters(allChangedRequestOptionsFilters);
 
             QnAMaker qna = new QnAMaker(qnAMakerEndpoint, noFiltersOptions);