import os
import pytest

from unittest.mock import MagicMock, Mock

from g2h.file import generate_breadcrumbs, sanitize_file_name, tree_join

def test_sanitize_not_necessary():
    assert(sanitize_file_name('foo', None) == 'foo')

def test_sanitize_success():
    assert(sanitize_file_name('.test', []) == '_test')

def test_sanitize_collissions():
    entries = []
    for i in range(1, 10):
        entry = Mock()
        entry.name = '_' * i + 'test'
        entries.append(entry)
    with pytest.raises(RuntimeError):
        sanitize_file_name('.test', entries)

def test_tree_join():
    commit = Mock()
    commit.hexsha = '123'
    assert(tree_join(commit, 'test') == os.path.join('123', 't', 'test'))

def test_generate_breadcrumbs():
    commit = Mock()
    commit.hexsha = '123'
    assert(generate_breadcrumbs('', commit, '', None) == '[/](/123/t/)')
    assert(generate_breadcrumbs('', commit, 'sub', None) == '[/](/123/t/)/[sub](/123/t/sub)')
    assert(generate_breadcrumbs('', commit, 'sub/dir', None) == '[/](/123/t/)/[sub](/123/t/sub)/[dir](/123/t/sub/dir)')
    assert(generate_breadcrumbs('', commit, 'sub/dir/file.txt', None) == '[/](/123/t/)/[sub](/123/t/sub)/[dir](/123/t/sub/dir)/[file.txt](/123/t/sub/dir/file.txt)')
    assert(generate_breadcrumbs('content sub', commit, 'sub', None) == '[/](/content sub/123/t/)/[sub](/content sub/123/t/sub)')
    assert(generate_breadcrumbs('', commit, 'sub/.file', MagicMock()) == '[/](/123/t/)/[sub](/123/t/sub)/[.file](/123/t/sub/_file)')