add tests

src/shared/utils/path.test.ts

@@ -0,0 +1,28 @@
+import joinPaths from './path';
+
+describe('Check path', () => {
+  //GIVEN
+  const tests = [
+    {
+      name: 'empty path',
+      expected: '/',
+      arguments: [],
+    },
+    { name: 'single argument', arguments: ['test'], expected: '/test' },
+    {
+      name: 'more arguments',
+      arguments: ['test', 'busola', 'path'],
+      expected: '/test/busola/path',
+    },
+  ];
+
+  tests.forEach(test => {
+    it(test.name, () => {
+      //WHEN
+      const result = joinPaths(...test.arguments);
+
+      //THEN
+      expect(result).toEqual(test.expected);
+    });
+  });
+});