test: achieve 100% test coverage for blas/ext/base/dnanasumors

lib/node_modules/@stdlib/blas/ext/base/dnanasumors/test/test.ndarray.js

@@ -77,6 +77,18 @@
 	t.end();
 });
 
+tape( 'if provided a `stride` and `offset` parameter equal to `0` and the first element is NaN, the function returns `0`', function test( t ) {
+	var x;
+	var v;
+
+	x = new Float64Array( [ NaN, -2.0, -4.0, 5.0, 3.0 ] );
+
+	v = dnanasumors( x.length, x, 0, 0 );
+	t.strictEqual( v, 0.0, 'returns expected value' );
+
+	t.end();
+});
+
 tape( 'if provided an `N` parameter less than or equal to `0`, the function returns `0.0`', function test( t ) {
 	var x;
 	var v;