Add fifty-fifty failing tests (#21)

fixture/fifty-fifty-space-first.js

@@ -0,0 +1,4 @@
+    4 spaces
+    4 spaces
+	1 tab
+	1 tab

fixture/fifty-fifty-tab-first.js

@@ -0,0 +1,4 @@
+	1 tab
+	1 tab
+    4 spaces
+    4 spaces

test.js

@@ -93,3 +93,21 @@ test('return indentation stats for no indentation', t => {
 		type: null
 	});
 });
+
+test('return indentation stats for fifty-fifty indented files with spaces first', t => {
+	const stats = m(getFile('fixture/fifty-fifty-space-first.js'));
+	t.deepEqual(stats, {
+		amount: 4,
+		indent: '    ',
+		type: 'space'
+	});
+});
+
+test.failing('return indentation stats for fifty-fifty indented files with tabs first', t => {
+	const stats = m(getFile('fixture/fifty-fifty-tab-first.js'));
+	t.deepEqual(stats, {
+		amount: 4,
+		indent: '    ',
+		type: 'space'
+	});
+});