b.RunParallel(func(pb *testing.PB) {
				for pb.Next() {
					if _, err := ExtensionsByType(typ); err != nil {
						b.Fatal(err)
					}
				}
			})
		})
	}
}

func TestExtensionsByType2(t *testing.T) {
	cleanup := setMimeInit(func() {
		clearMimeTypes()
		// Initialize built-in types like in type.go before osInitMime.
		setMimeTypes(builtinTypesLower, builtinTypesLower)
	})
	defer cleanup()