* More tests

Author: dtim

utbot-framework-test/src/test/kotlin/org/utbot/examples/strings/StringExamplesTest.kt

@@ -237,6 +237,15 @@ internal class StringExamplesTest : UtValueTestCaseChecker(
         )
     }
 
+    @Test
+    fun testIsStringBuilderEmpty() {
+        check(
+            StringExamples::isStringBuilderEmpty,
+            eq(2),
+            { stringBuilder, result -> result == stringBuilder.isEmpty() }
+        )
+    }
+
     @Test
     @Disabled("Flaky on GitHub: https://github.com/UnitTestBot/UTBotJava/issues/1004")
     fun testIsValidUuid() {

utbot-framework/src/main/java/org/utbot/engine/overrides/collections/UtArrayList.java

@@ -179,7 +179,7 @@ public String toString() {
         if (size > 1) {
             for (int i = 1; i < size; i++) {
                 builder.append(", ");
-                builder.append(get(i).toString());
+                builder.append(get(i));
             }
         }
         builder.append("]");

utbot-sample/src/main/java/org/utbot/examples/strings/StringExamples.java

@@ -1,5 +1,7 @@
 package org.utbot.examples.strings;
 
+import org.jetbrains.annotations.NotNull;
+
 import java.util.Arrays;
 
 import static java.lang.Boolean.valueOf;
@@ -175,6 +177,16 @@ public String nullableStringBuffer(StringBuffer buffer, int i) {
         return buffer.toString();
     }
 
+    @SuppressWarnings("RedundantIfStatement")
+    public boolean isStringBuilderEmpty(@NotNull StringBuilder stringBuilder) {
+        String content = stringBuilder.toString();
+        if (content.length() == 0) {
+            return true;
+        }
+
+        return false;
+    }
+
     public boolean isValidUuid(String uuid) {
         return isNotBlank(uuid) && uuid
                 .matches("[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}");