Implemented grade boundaries for TestTemplate

lib/TestTemplate.js

@@ -6,6 +6,7 @@ const crypto = require('crypto');
 // Import user defined modules
 const Class = require('./Class');
 const Test = require('./Test');
+const GradeBoundaries = require('./GradeBoundaries');
 
 /**
  * A class that represents a test template
@@ -41,6 +42,8 @@ class TestTemplate {
 	 */
 	maxMark;
 
+	gradeBoundaries;
+
 	#conn;
 
 	/**
@@ -54,7 +57,8 @@ class TestTemplate {
 				testTemplateId as id,
 				accountId,
 				name,
-				maxMark
+				maxMark,
+				gradeBoundaries
 			from
 				testTemplate
 			where
@@ -70,7 +74,15 @@ class TestTemplate {
 				throw new Error('No test template found');
 
 			for (const [ k, v ] of Object.entries(record[0]))
-				this[k] = v;
+				this[k] = v ?? undefined;
+
+			if (this.gradeBoundaries) {
+				this.gradeBoundaries =
+					JSON.parse(this.gradeBoundaries);
+			}
+
+			this.gradeBoundaries =
+				new GradeBoundaries(this.gradeBoundaries);
 
 			this.account = await this.getAccount();