diff --git a/__tests__/drawingoperations.js b/__tests__/drawingoperations.js
index 94f24d8..a119765 100644
--- a/__tests__/drawingoperations.js
+++ b/__tests__/drawingoperations.js
@@ -88,4 +88,70 @@ test( 'Draw a circle', () => {
 	expect( matrix[ 2 ][ 1 ] ).toEqual( { r: 0, g: 0, b: 0, a: 1} );
 	expect( matrix[ 3 ][ 1 ] ).toEqual( { r: 0, g: 0, b: 0, a: 1} );
 
+} );
+
+test( 'Draw a rectangle', () => {
+	driver = driverFactory.createFromConfig( config );
+
+	driver.drawRect( 0, 0, 4, 4, 255, 255, 255, 1 );
+
+	let matrix = driver.getMatrix();
+
+	expect( matrix[ 0 ][ 0 ] ).toEqual( { r: 255, g: 255, b: 255, a: 1} );
+	expect( matrix[ 0 ][ 3 ] ).toEqual( { r: 255, g: 255, b: 255, a: 1} );
+	expect( matrix[ 3 ][ 3 ] ).toEqual( { r: 255, g: 255, b: 255, a: 1} );
+	expect( matrix[ 3 ][ 0 ] ).toEqual( { r: 255, g: 255, b: 255, a: 1} );
+
+	expect( matrix[ 1 ][ 1 ] ).toEqual( { r: 0, g: 0, b: 0, a: 1} );
+	expect( matrix[ 1 ][ 2 ] ).toEqual( { r: 0, g: 0, b: 0, a: 1} );
+	expect( matrix[ 2 ][ 1 ] ).toEqual( { r: 0, g: 0, b: 0, a: 1} );
+	expect( matrix[ 2 ][ 2 ] ).toEqual( { r: 0, g: 0, b: 0, a: 1} );
+
+} );
+
+test( 'Draw a filled rectangle', () => {
+	driver = driverFactory.createFromConfig( config );
+
+	driver.drawRectFilled( 0, 0, 4, 4, 255, 255, 255, 1 );
+
+	let matrix = driver.getMatrix();
+
+	expect( matrix[ 0 ][ 0 ] ).toEqual( { r: 255, g: 255, b: 255, a: 1} );
+	expect( matrix[ 0 ][ 3 ] ).toEqual( { r: 255, g: 255, b: 255, a: 1} );
+	expect( matrix[ 3 ][ 3 ] ).toEqual( { r: 255, g: 255, b: 255, a: 1} );
+	expect( matrix[ 3 ][ 0 ] ).toEqual( { r: 255, g: 255, b: 255, a: 1} );
+
+	expect( matrix[ 1 ][ 1 ] ).toEqual( { r: 255, g: 255, b: 255, a: 1} );
+	expect( matrix[ 1 ][ 2 ] ).toEqual( { r: 255, g: 255, b: 255, a: 1} );
+	expect( matrix[ 2 ][ 1 ] ).toEqual( { r: 255, g: 255, b: 255, a: 1} );
+	expect( matrix[ 2 ][ 2 ] ).toEqual( { r: 255, g: 255, b: 255, a: 1} );
+
+} );
+
+test( 'Draw a line and clear the matrix', () => {
+	driver = driverFactory.createFromConfig( config );
+
+	driver.drawLine( 0, 0, 3, 3, 255, 255, 255, 1 );
+
+	let matrix = driver.getMatrix();
+
+	expect( matrix[ 0 ][ 0 ] ).toEqual( { r: 255, g: 255, b: 255, a: 1} );
+	expect( matrix[ 1 ][ 1 ] ).toEqual( { r: 255, g: 255, b: 255, a: 1} );
+	expect( matrix[ 2 ][ 2 ] ).toEqual( { r: 255, g: 255, b: 255, a: 1} );
+	expect( matrix[ 3 ][ 3 ] ).toEqual( { r: 255, g: 255, b: 255, a: 1} );
+
+	expect( matrix[ 0 ][ 1 ] ).toEqual( { r: 0, g: 0, b: 0, a: 1} );
+	expect( matrix[ 1 ][ 2 ] ).toEqual( { r: 0, g: 0, b: 0, a: 1} );
+	expect( matrix[ 2 ][ 3 ] ).toEqual( { r: 0, g: 0, b: 0, a: 1} );
+	expect( matrix[ 3 ][ 0 ] ).toEqual( { r: 0, g: 0, b: 0, a: 1} );
+
+	driver.clear( 0, 0, 0, 1 );
+
+	matrix = driver.getMatrix();
+
+	expect( matrix[ 0 ][ 0 ] ).toEqual( { r: 0, g: 0, b: 0, a: 1} );
+	expect( matrix[ 1 ][ 1 ] ).toEqual( { r: 0, g: 0, b: 0, a: 1} );
+	expect( matrix[ 2 ][ 2 ] ).toEqual( { r: 0, g: 0, b: 0, a: 1} );
+	expect( matrix[ 3 ][ 3 ] ).toEqual( { r: 0, g: 0, b: 0, a: 1} );
+
 } );
\ No newline at end of file
diff --git a/__tests__/driverfactory.js b/__tests__/driverfactory.js
index 1a9b607..22e0aa8 100644
--- a/__tests__/driverfactory.js
+++ b/__tests__/driverfactory.js
@@ -21,10 +21,19 @@ beforeEach(() => {
 });
 
 test( 'Dummy driver to be properly created', () => {
-	expect( driverFactory.createFromConfig( config ) ).toBeInstanceOf( Dummy );
+	let driver = driverFactory.createFromConfig( config );
+
+	driver.silence = true;
+
+	expect( driver ).toBeInstanceOf( Dummy );
+	expect( driver.write( driver.getBuffer() ) ).toBeUndefined();
 } );
 
 test( 'Pimoroni Unicorn driver to be properly created', () => {
 	config.driver = "pimoroniunicorn";
-	expect( driverFactory.createFromConfig( config ) ).toBeInstanceOf( PimoroniUnicorn );
+
+	let driver = driverFactory.createFromConfig( config );
+
+	expect( driver ).toBeInstanceOf( PimoroniUnicorn );
+	expect( driver.write( driver.getBuffer() ) ).toBeUndefined();
 } );
\ No newline at end of file
diff --git a/drivers/dummy.js b/drivers/dummy.js
index f633df6..ae3e3aa 100644
--- a/drivers/dummy.js
+++ b/drivers/dummy.js
@@ -5,10 +5,14 @@ let { Driver } = require( './driver' );
 class Dummy extends Driver {
 	constructor() {
 		super();
+
+		this.silence = false;
 	}
 
 	write( buffer ) {
-		console.log( buffer );
+		if ( this.silence !== true ) {
+			console.log( buffer );
+		}
 	}
 }