💚 add unit tests for lib/content-type.ts

Author: Ammar Dodin

test/unit/test.contentType.js

@@ -0,0 +1,26 @@
+const contentType = require('../../lib/content-type');
+const assert = require('assert');
+const fs = require('fs');
+const path = require('path');
+
+describe('contentType', () => {
+  it('should return content type from a filename', () => {
+    const fname = 'fake.mp3';
+    assert(contentType.fromFilename(fname) === 'audio/mp3');
+  });
+  it('should return content type from a File object', () => {
+    const File = {
+      name: 'fake.mp3'
+    };
+    assert(contentType.fromFilename(File) === 'audio/mp3');
+  });
+  it('should return undefined for an empty input', () => {
+    assert(contentType.fromFilename({}) === undefined);
+  });
+  it('should return content type from a buffer', () => {
+    const buffer = fs.readFileSync(
+      path.join(__dirname, '../resources/blank.wav')
+    );
+    assert(contentType.fromHeader(buffer) === 'audio/wav');
+  });
+});