chore: add test cases

Signed-off-by: Shabareesh Shetty <[email protected]>

Author: ShabiShett07

lib/node_modules/@stdlib/blas/base/zdotc/test/test.zdotc.js

@@ -83,7 +83,7 @@ tape( 'if provided an `N` parameter less than or equal to `0`, the function retu
 	t.end();
 });
 
-tape( 'the function supports an `x` stride', function test( t ) {
+tape( 'the function supports a `x` stride', function test( t ) {
 	var expected;
 	var dot;
 	var x;
@@ -115,7 +115,39 @@ tape( 'the function supports an `x` stride', function test( t ) {
 	t.end();
 });
 
-tape( 'the function supports an `y` stride', function test( t ) {
+tape( 'the function supports a negative `x` stride', function test( t ) {
+	var expected;
+	var dot;
+	var x;
+	var y;
+
+	x = new Complex128Array([
+		-1, // 1
+		-9, // 1
+		7,  // 0
+		-8, // 0
+		-4,
+		-7,
+		2,
+		-8
+	]);
+	y = new Complex128Array([
+		6,  // 0
+		-6, // 0
+		-9, // 1
+		5,  // 1
+		7,
+		-6,
+		1,
+		-5
+	]);
+	expected = new Complex128( 54, -80 );
+	dot = zdotc( 2, x, -1, y, 1 );
+	t.deepEqual( dot, expected, 'returns expected value' );
+	t.end();
+});
+
+tape( 'the function supports a `y` stride', function test( t ) {
 	var expected;
 	var dot;
 	var x;
@@ -148,6 +180,39 @@ tape( 'the function supports an `y` stride', function test( t ) {
 	t.end();
 });
 
+tape( 'the function supports a negative `y` stride', function test( t ) {
+	var expected;
+	var dot;
+	var x;
+	var y;
+
+	x = new Complex128Array([
+		7,  // 0
+		-8, // 0
+		-4, // 1
+		-7, // 1
+		-1,
+		-9,
+		2,
+		-8
+	]);
+	y = new Complex128Array([
+		7,  // 1
+		-6, // 1
+		6,  // 0
+		-6, // 0
+		-9,
+		5,
+		1,
+		-5
+	]);
+	expected = new Complex128( 104, 79 );
+
+	dot = zdotc( 2, x, 1 y, -1 );
+	t.deepEqual( dot, expected, 'returns expected value' );
+	t.end();
+});
+
 tape( 'the function supports negative strides', function test( t ) {
 	var expected;
 	var dot;