"""Test the entry module in the web-ui"""
import io

def test_basic_elements_present_in_index_page(client):
    """
    GIVEN: A flask application testing client
    WHEN: the index page is requested with the "POST" method and no datat
    THEN: verify that the response contains error notifications
    """
    response = client.get("/")
    assert response.status_code == 200
    ## form present
    assert b'<form action="/"' in response.data
    assert b'method="POST"' in response.data
    assert b'enctype="multipart/form-data"' in response.data
    assert b'</form>' in response.data
    ## filetype elements
    assert b'<input type="radio" name="filetype"' in response.data
    assert b'id="filetype_standard_error"' in response.data
    assert b'id="filetype_average"' in response.data
    ## file upload elements
    assert b'<label for="file_upload">select file</label>' in response.data
    assert b'<input type="file" name="qc_text_file"' in response.data
    assert b'id="file_upload"' in response.data
    ## submit button
    assert b'<input type="submit" value="upload file"' in response.data

def test_post_notifies_errors_if_no_data_is_provided(client):
    response = client.post("/", data={})
    assert (
        b'<span class="alert alert-error">Invalid file type provided.</span>'
        in response.data)
    assert (
        b'<span class="alert alert-error">No file was uploaded.</span>'
        in response.data)

def test_post_with_correct_data(client):
    """
    GIVEN: A flask application testing client
    WHEN: the index page is requested with the "POST" method and with the
          appropriate data provided
    THEN: ....
    """
    with open("tests/test_data/no_data_errors.tsv", "br") as test_file:
        response = client.post(
            "/", data={
                "filetype": "average",
                "qc_text_file": (io.BytesIO(test_file.read()), "no_data_errors.tsv")
            })

    assert response.status_code == 302
    assert b'Redirecting...' in response.data
    assert (
        b'/parse/parse?filename=no_data_errors.tsv&amp;filetype=average'
        in response.data)