diff --git a/.idea/runConfigurations.xml b/.idea/runConfigurations.xml
deleted file mode 100644
index 797acea..0000000
--- a/.idea/runConfigurations.xml
+++ /dev/null
@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="RunConfigurationProducerService">
-    <option name="ignoredProducers">
-      <set>
-        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
-      </set>
-    </option>
-  </component>
-</project>
\ No newline at end of file
diff --git a/Data-Integration.iml b/Data-Integration.iml
index 6f3b297..242e669 100644
--- a/Data-Integration.iml
+++ b/Data-Integration.iml
@@ -28,16 +28,16 @@
       </library>
     </orderEntry>
     <orderEntry type="module-library">
-      <library name="JUnit5.7.0">
+      <library name="JUnit5.8.1">
         <CLASSES>
-          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter/5.7.0/junit-jupiter-5.7.0.jar!/" />
-          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-api/5.7.0/junit-jupiter-api-5.7.0.jar!/" />
-          <root url="jar://$MAVEN_REPOSITORY$/org/apiguardian/apiguardian-api/1.1.0/apiguardian-api-1.1.0.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter/5.8.1/junit-jupiter-5.8.1.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-api/5.8.1/junit-jupiter-api-5.8.1.jar!/" />
           <root url="jar://$MAVEN_REPOSITORY$/org/opentest4j/opentest4j/1.2.0/opentest4j-1.2.0.jar!/" />
-          <root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-commons/1.7.0/junit-platform-commons-1.7.0.jar!/" />
-          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-params/5.7.0/junit-jupiter-params-5.7.0.jar!/" />
-          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-engine/5.7.0/junit-jupiter-engine-5.7.0.jar!/" />
-          <root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-engine/1.7.0/junit-platform-engine-1.7.0.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-commons/1.8.1/junit-platform-commons-1.8.1.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/apiguardian/apiguardian-api/1.1.2/apiguardian-api-1.1.2.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-params/5.8.1/junit-jupiter-params-5.8.1.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-engine/5.8.1/junit-jupiter-engine-5.8.1.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-engine/1.8.1/junit-platform-engine-1.8.1.jar!/" />
         </CLASSES>
         <JAVADOC />
         <SOURCES />
diff --git a/out/production/Data-Integration/OrderBook/Cache.class b/out/production/Data-Integration/OrderBook/Cache.class
new file mode 100644
index 0000000..7cbccb9
Binary files /dev/null and b/out/production/Data-Integration/OrderBook/Cache.class differ
diff --git a/out/production/Data-Integration/OrderBook/Fill.class b/out/production/Data-Integration/OrderBook/Fill.class
new file mode 100644
index 0000000..1c0aa7a
Binary files /dev/null and b/out/production/Data-Integration/OrderBook/Fill.class differ
diff --git a/out/production/Data-Integration/OrderBook/Order.class b/out/production/Data-Integration/OrderBook/Order.class
new file mode 100644
index 0000000..be4eaf4
Binary files /dev/null and b/out/production/Data-Integration/OrderBook/Order.class differ
diff --git a/out/production/Data-Integration/OrderBook/OrderBook.class b/out/production/Data-Integration/OrderBook/OrderBook.class
new file mode 100644
index 0000000..bac9b96
Binary files /dev/null and b/out/production/Data-Integration/OrderBook/OrderBook.class differ
diff --git a/out/production/Data-Integration/OrderBook/OrderType.class b/out/production/Data-Integration/OrderBook/OrderType.class
new file mode 100644
index 0000000..395e920
Binary files /dev/null and b/out/production/Data-Integration/OrderBook/OrderType.class differ
diff --git a/out/production/Data-Integration/OrderBook/Side.class b/out/production/Data-Integration/OrderBook/Side.class
new file mode 100644
index 0000000..9d46b21
Binary files /dev/null and b/out/production/Data-Integration/OrderBook/Side.class differ
diff --git a/out/production/Data-Integration/OrderBook/TimeInForce.class b/out/production/Data-Integration/OrderBook/TimeInForce.class
new file mode 100644
index 0000000..4ce9e10
Binary files /dev/null and b/out/production/Data-Integration/OrderBook/TimeInForce.class differ
diff --git a/out/production/Data-Integration/classpath.index b/out/production/Data-Integration/classpath.index
new file mode 100644
index 0000000..b80098b
Binary files /dev/null and b/out/production/Data-Integration/classpath.index differ
diff --git a/out/test/Data-Integration/classpath.index b/out/test/Data-Integration/classpath.index
new file mode 100644
index 0000000..17aa303
Binary files /dev/null and b/out/test/Data-Integration/classpath.index differ
diff --git a/out/test/Data-Integration/testOrderBook.class b/out/test/Data-Integration/testOrderBook.class
new file mode 100644
index 0000000..c5e3688
Binary files /dev/null and b/out/test/Data-Integration/testOrderBook.class differ
diff --git a/src/test/testOrderBook.java b/src/test/testOrderBook.java
index 30d1653..01bdafb 100644
--- a/src/test/testOrderBook.java
+++ b/src/test/testOrderBook.java
@@ -2,6 +2,8 @@
 import OrderBook.OrderBook;
 import OrderBook.Side;
 import org.junit.jupiter.api.Test;
+import OrderBook.Fill;
+import OrderBook.OrderType;
 
 import static org.junit.jupiter.api.Assertions.*;
 
@@ -168,4 +170,26 @@ void placeTwoAsk() {
 		assertEquals(-1f, testSubject.bestBidPrice);
 		assertEquals(1.8f, testSubject.sittingVolume);
 	}
+
+	@Test
+	void checkBest(){
+		OrderBook testSubject = new OrderBook();
+
+		//Bids:
+		Order newBidOne = new Order(5.3f, 0.3f, Side.BID, 1677598183L);
+		testSubject.placeOrder(newBidOne);
+		Order newBidTwo = new Order(8.3f, 0.7f, Side.BID, 1977598183L);
+		testSubject.placeOrder(newBidTwo);
+		assertEquals(5.0, (double)Math.round(testSubject.bestBidPrice));
+
+		//Asks:
+		Order newAskOne = new Order(5.3f, 0.4f, Side.ASK, 1777598183L);
+		testSubject.placeOrder(newAskOne);
+		Order newAskTwo = new Order(8.3f, 0.2f, Side.ASK, 1877598183L);
+		testSubject.placeOrder(newAskTwo);
+		assertEquals(5.0, (double)Math.round(testSubject.bestAskPrice));
+
+		assertEquals(0.0,(double)Math.round(testSubject.sittingVolume));
+
+	}
 }