Add tests

Author: kgryte

lib/node_modules/@stdlib/plot/sparklines/unicode/tristate/test/test.buffer_size.js

@@ -111,7 +111,7 @@ tape( 'an instance supports setting and getting the property value', function te
 	t.end();
 });
 
-tape( 'setting the `bufferSize` property triggers a `change` event', function test( t ) {
+tape( 'setting the `bufferSize` property to a new value triggers a `change` event', function test( t ) {
 	var chart;
 
 	chart = ctor({
@@ -126,3 +126,21 @@ tape( 'setting the `bufferSize` property triggers a `change` event', function te
 		t.end();
 	}
 });
+
+tape( 'setting the `bufferSize` property to its current value does not trigger a `change` event', function test( t ) {
+	var chart;
+
+	chart = ctor({
+		'bufferSize': 10
+	});
+
+	chart.on( 'change', onChange );
+	chart.bufferSize = 10;
+
+	t.ok( true, 'does not trigger event' );
+	t.end();
+
+	function onChange() {
+		t.ok( false, 'should not trigger event' );
+	}
+});

lib/node_modules/@stdlib/plot/sparklines/unicode/tristate/test/test.description.js

@@ -78,7 +78,7 @@ tape( 'an instance supports setting and getting the property value', function te
 	t.end();
 });
 
-tape( 'setting the `description` property triggers a `change` event', function test( t ) {
+tape( 'setting the `description` property to a new value triggers a `change` event', function test( t ) {
 	var chart;
 
 	chart = ctor({
@@ -93,3 +93,21 @@ tape( 'setting the `description` property triggers a `change` event', function t
 		t.end();
 	}
 });
+
+tape( 'setting the `description` property to its current value does not trigger a `change` event', function test( t ) {
+	var chart;
+
+	chart = ctor({
+		'description': 'beep'
+	});
+
+	chart.on( 'change', onChange );
+	chart.description = 'boop';
+
+	t.ok( true, 'does not trigger event' );
+	t.end();
+
+	function onChange() {
+		t.ok( false, 'should not trigger event' );
+	}
+});

lib/node_modules/@stdlib/plot/sparklines/unicode/tristate/test/test.is_defined.js

@@ -94,7 +94,7 @@ tape( 'the default behavior is to treat `NaN` values as undefined', function tes
 	t.end();
 });
 
-tape( 'setting the `isDefined` property triggers a `change` event', function test( t ) {
+tape( 'setting the `isDefined` property to a new value triggers a `change` event', function test( t ) {
 	var chart;
 
 	chart = ctor({
@@ -113,3 +113,21 @@ tape( 'setting the `isDefined` property triggers a `change` event', function tes
 		t.end();
 	}
 });
+
+tape( 'setting the `isDefined` property to its current value does not trigger a `change` event', function test( t ) {
+	var chart;
+
+	chart = ctor({
+		'isDefined': noop
+	});
+
+	chart.on( 'change', onChange );
+	chart.isDefined = noop;
+
+	t.ok( true, 'does not trigger event' );
+	t.end();
+
+	function onChange() {
+		t.ok( false, 'should not trigger event' );
+	}
+});

lib/node_modules/@stdlib/plot/sparklines/unicode/tristate/test/test.label.js

@@ -76,7 +76,7 @@ tape( 'an instance supports setting and getting the property value', function te
 	t.end();
 });
 
-tape( 'setting the `label` property triggers a `change` event', function test( t ) {
+tape( 'setting the `label` property to a new value triggers a `change` event', function test( t ) {
 	var chart;
 
 	chart = ctor({
@@ -91,3 +91,21 @@ tape( 'setting the `label` property triggers a `change` event', function test( t
 		t.end();
 	}
 });
+
+tape( 'setting the `label` property to its current value does not trigger a `change` event', function test( t ) {
+	var chart;
+
+	chart = ctor({
+		'label': 'a'
+	});
+
+	chart.on( 'change', onChange );
+	chart.label = 'a';
+
+	t.ok( true, 'does not trigger event' );
+	t.end();
+
+	function onChange() {
+		t.ok( false, 'should not trigger event' );
+	}
+});