diff --git a/lib/node_modules/@stdlib/utils/circular-buffer/docs/types/test.ts b/lib/node_modules/@stdlib/utils/circular-buffer/docs/types/test.ts
index 7f4759e23f87..d03dcf1cbf59 100644
--- a/lib/node_modules/@stdlib/utils/circular-buffer/docs/types/test.ts
+++ b/lib/node_modules/@stdlib/utils/circular-buffer/docs/types/test.ts
@@ -26,6 +26,25 @@ import CircularBuffer = require( './index' );
 // The function returns a circular buffer instance...
 {
 	new CircularBuffer( 3 ); // $ExpectType CircularBuffer
+	new CircularBuffer( [2, 3] ); // $ExpectType CircularBuffer
+}
+
+// The functions or fields of instance should be ok
+{
+	const buf = new CircularBuffer( 3 ); // $ExpectType CircularBuffer
+	buf.push( 'foo' );
+	let circularBuf: CircularBuffer;
+	let numberType: number;
+	let booleanType: boolean;
+	let stringType: string;
+	let arrayType: any[];
+
+	numberType = buf.count;
+	numberType = buf.length;
+	booleanType = buf.full;
+	circularBuf = buf.clear();
+	stringType = buf.toJSON();
+	arrayType = buf.toArray();
 }
 
 // The compiler throws an error if the constructor function is provided an invalid number of arguments...
@@ -33,3 +52,14 @@ import CircularBuffer = require( './index' );
 	new CircularBuffer(); // $ExpectError
 	new CircularBuffer( 3, 4 ); // $ExpectError
 }
+
+// The compiler throws an error if the constructor is provided an invalid argument type...
+{
+	new CircularBuffer( 'invalidType' ); // $ExpectError
+	new CircularBuffer( 12.2 ); // $ExpectError
+	new CircularBuffer( {} ); // $ExpectError
+	new CircularBuffer( true ); // $ExpectError
+	new CircularBuffer( null ); // $ExpectError
+	new CircularBuffer( undefined ); // $ExpectError
+	new CircularBuffer( new Date() ); // $ExpectError
+}