chore: update tests for type checking

test/calc-text-width.spec.js

@@ -22,8 +22,3 @@ tap.test('calc width for emojis', t => {
   t.matchSnapshot(calcWidth('💩🤱🦄', true), 'result is correct')
   t.end()
 })
-
-tap.test('exception handling', t => {
-  t.throws(() => calcWidth(0), TypeError, 'throw if feed with non-string input')
-  t.end()
-})

test/index.spec.js

@@ -42,3 +42,9 @@ tap.test('generate badge with { subject, status, icon, style }', t => {
   t.matchSnapshot(svg, 'snapshot')
   t.end()
 })
+
+tap.test('type checking', t => {
+  t.throws(() => badgen({ status: '' }), TypeError, 'throw if subject is non-string')
+  t.throws(() => badgen({ subject: '' }), TypeError, 'throw if status is non-string')
+  t.end()
+})