diff --git a/tests/convert.test.ts b/tests/convert.test.ts
index 2cdb804..4d3fde9 100644
--- a/tests/convert.test.ts
+++ b/tests/convert.test.ts
@@ -1,3 +1,4 @@
+import path from 'path';
 import {
   convertJsToSfz,
   convertJsToXml,
@@ -9,10 +10,10 @@ import {
 import { fileReadJson, fileReadString } from '../dist/file';
 import { ParseDefinition } from '../dist/types/parse';
 
-const syntaxDir: string = 'test/syntax';
-const sfzJs: ParseDefinition = fileReadJson(`${syntaxDir}/basic.json`);
-const sfzText: string = fileReadString(`${syntaxDir}/basic.sfz`);
-const sfzXml: string = fileReadString(`${syntaxDir}/basic.xml`);
+const syntaxDir: string = path.join('test', 'syntax');
+const sfzJs: ParseDefinition = fileReadJson(path.join(syntaxDir, 'basic.json'));
+const sfzText: string = fileReadString(path.join(syntaxDir, 'basic.sfz'));
+const sfzXml: string = fileReadString(path.join(syntaxDir, 'basic.xml'));
 
 test('Convert Js to Sfz', async () => {
   expect(await convertJsToSfz(sfzJs)).toEqual(sfzText);
diff --git a/tests/file.test.ts b/tests/file.test.ts
index 4c93095..4f85159 100644
--- a/tests/file.test.ts
+++ b/tests/file.test.ts
@@ -18,12 +18,14 @@ import {
   fileOpen,
   fileSize,
 } from '../src/file';
+import os from 'os';
+import path from 'path';
 
-const DIR_PATH: string = 'test/new-directory';
-const DIR_PATH_GLOB: string = `${DIR_PATH}/**/*.txt`;
-const DIR_RENAME: string = 'test/new-directory-renamed';
+const DIR_PATH: string = path.join('test', 'new-directory');
+const DIR_PATH_GLOB: string = path.join('test', 'new-directory', '**', '*.txt');
+const DIR_RENAME: string = path.join('test', 'new-directory-renamed');
 
-const FILE_PATH: string = `${DIR_PATH}/file.txt`;
+const FILE_PATH: string = path.join('test', 'new-directory', 'file.txt');
 
 test('Directory contains', () => {
   expect(dirContains('test', DIR_PATH)).toEqual(true);
diff --git a/tests/parse.test.ts b/tests/parse.test.ts
index 9e4f384..51bb3a8 100644
--- a/tests/parse.test.ts
+++ b/tests/parse.test.ts
@@ -31,8 +31,8 @@ function convertToXml(elements: any) {
 }
 
 // Test specific syntax edge-cases
-const syntaxDir: string = 'test/syntax';
-const syntaxTests: string[] = dirRead(`${syntaxDir}/**/*.sfz`);
+const syntaxDir: string = path.join('test', 'syntax');
+const syntaxTests: string[] = dirRead(path.join(syntaxDir, '**', '*.sfz'));
 test.each(syntaxTests)('parseSfz %p', async (sfzFile: string) => {
   const sfzText: string = fileReadString(sfzFile);
   const sfzXml: string = fileReadString(sfzFile.replace('.sfz', '.xml'));
@@ -40,8 +40,8 @@ test.each(syntaxTests)('parseSfz %p', async (sfzFile: string) => {
 });
 
 // Test entire sfz test suite
-const sfzDir: string = 'sfz-tests';
-const sfzTests: string[] = dirRead(`${sfzDir}/**/*.sfz`);
+const sfzDir: string = path.join('sfz-tests');
+const sfzTests: string[] = dirRead(path.join(sfzDir, '**', '*.sfz'));
 test.each(sfzTests)('parseSfz %p', async (sfzFile: string) => {
   const sfzText: string = fileReadString(sfzFile);
   const sfzXml: string = fileReadString(sfzFile.replace('.sfz', '.xml'));
diff --git a/tests/utils.test.ts b/tests/utils.test.ts
index c28b5d3..4a247e4 100644
--- a/tests/utils.test.ts
+++ b/tests/utils.test.ts
@@ -4,10 +4,10 @@ import { pathGetDirectory, pathGetExt, pathGetFilename, pathJoin } from '../src/
 const FILE_EXT: string = 'txt';
 const FILE_NAME: string = 'filename';
 const FILE_NAME_EXT: string = `${FILE_NAME}.${FILE_EXT}`;
-const FILE_PATH = `foldera/folderb/${FILE_NAME_EXT}`;
+const FILE_PATH = path.join('foldera', 'folderb', FILE_NAME_EXT);
 
 test('Path get directory', () => {
-  expect(pathGetDirectory(FILE_PATH, path.sep)).toEqual('foldera/folderb');
+  expect(pathGetDirectory(FILE_PATH, path.sep)).toEqual(path.join('foldera', 'folderb'));
 });
 
 test('Path get extension', () => {