test: update tests

Signed-off-by: Athan <kgryte@gmail.com>

Author: kgryte

lib/node_modules/@stdlib/stats/strided/nancount/test/test.main.js

@@ -119,6 +119,29 @@ tape( 'the function supports a `stride` parameter', function test( t ) {
 	t.end();
 });
 
+tape( 'the function supports a `stride` parameter (accessors)', function test( t ) {
+	var x;
+	var v;
+
+	x = [
+		1.0,  // 0
+		2.0,
+		2.0,  // 1
+		-7.0,
+		-2.0, // 2
+		3.0,
+		4.0,  // 3
+		2.0,
+		NaN,  // 4
+		NaN
+	];
+
+	v = nancount( 5, toAccessorArray( x ), 2 );
+
+	t.strictEqual( v, 4, 'returns expected value' );
+	t.end();
+});
+
 tape( 'the function supports a negative `stride` parameter', function test( t ) {
 	var x;
 	var v;
@@ -142,6 +165,29 @@ tape( 'the function supports a negative `stride` parameter', function test( t )
 	t.end();
 });
 
+tape( 'the function supports a negative `stride` parameter (accessors)', function test( t ) {
+	var x;
+	var v;
+
+	x = [
+		NaN,  // 4
+		NaN,
+		1.0,  // 3
+		2.0,
+		2.0,  // 2
+		-7.0,
+		-2.0, // 1
+		3.0,
+		4.0,  // 0
+		2.0
+	];
+
+	v = nancount( 5, toAccessorArray( x ), -2 );
+
+	t.strictEqual( v, 4, 'returns expected value' );
+	t.end();
+});
+
 tape( 'if provided a `stride` parameter equal to `0`, the function returns `N` if first element is valid', function test( t ) {
 	var x;
 	var v;