chore: add test cases

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: na
  - task: lint_package_json
    status: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: na
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
    status: passed
  - task: lint_javascript_benchmarks
    status: na
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: na
  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: na
  - task: lint_typescript_declarations
    status: na
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

Author: ShabiShett07

lib/node_modules/@stdlib/blas/base/zdotc/test/test.ndarray.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 +115,67 @@ 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, 1, y, 1, 0 );
+	t.deepEqual( dot, expected, 'returns expected value' );
+	t.end();
+});
+
+tape( 'the function supports a `x` offset', function test( t ) {
+	var expected;
+	var dot;
+	var x;
+	var y;
+
+	x = new Complex128Array([
+		0.0,
+		0.0,
+		1.0,  // 0
+		2.0,  // 0
+		3.0,  // 1
+		4.0   // 1
+	]);
+	y = new Complex128Array([
+		-5.0,  // 0
+		1.0,   // 0
+		-6.0,  // 1
+		7.0    // 1
+	]);
+	expected = new Complex128( 7.0, 56.0 );
+
+	dot = zdotc( 2, x, 1, 1, y, 1, 0 );
+	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 +208,67 @@ 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, 0, y, -1, 1 );
+	t.deepEqual( dot, expected, 'returns expected value' );
+	t.end();
+});
+
+tape( 'the function supports a `y` offset', function test( t ) {
+	var expected;
+	var dot;
+	var x;
+	var y;
+
+	x = new Complex128Array([
+		1.0,  // 0
+		2.0,  // 0
+		3.0,  // 1
+		4.0   // 1
+	]);
+	y = new Complex128Array([
+		0.0,
+		0.0,
+		-5.0,  // 0
+		1.0,   // 0
+		-6.0,  // 1
+		7.0    // 1
+	]);
+	expected = new Complex128( 7.0, 56.0 );
+
+	dot = zdotc( 2, x, 1, 0, y, 1, 1 );
+	t.deepEqual( dot, expected, 'returns expected value' );
+
+	t.end();
+});
+
 tape( 'the function supports negative strides', function test( t ) {
 	var expected;
 	var dot;