Unit testing file upload from, the form.errors gives the 'file' is missing

Using Django Forms & APIs
1

My simplified setup:

Model

class myFile(models.Model):
    filename = models.CharField(_('file name'), max_length=255, null=False, blank=False, default=_('file name'))
    status   = models.CharField(_('status'), max_length=255, null=False, blank=False, default=_('Draft'))
    file     = models.FileField(null=True, max_length=300)

Form

class myFileCreationForm(forms.ModelForm):
    class Meta:
        model = myFile
        fields = ['file', 'status', 'filename', ]

        widgets = {
            'file': forms.ClearableFileInput(attrs={'class': 'file-select'}),
            'status': forms.TextInput(attrs={'class': 'input is-primary'}),
            'filename': forms.TextInput(attrs={'class': 'input is-primary'}),
        }

    def __init__(self, *args, **kwargs):
        super(myFileCreationForm, self).__init__(*args, **kwargs)

        self.fields['status'].initial = "Draft"

Now I would like to test the form

TestCase

class TestCase(TestCase):

    def setUp(self):
        pass


    def test_create_file_form(self):
        file_data = {"testdocument": SimpleUploadedFile("face.doc", b"file data")}
        post_data = {"filename": "face.doc", "status": "ISSUE"}
        form = myFileCreationForm(data=post_data, files=file_data)
        print(f"Form erros: {form.errors}" )
        assert form.is_valid()

According to:

This should be the right setup BUT 'form.errors give me
Form errors: <ul class="errorlist"><li>file<ul class="errorlist"><li>This field is required.</li></ul></li></ul>
‘file’ is required ?

My template form is as it should be.

<form action="" method="post" enctype="multipart/form-data" >

I do not understand what is wrong here, or how to debug this.
Any suggestions?

2

The name of file field in the form is file, so the files data must contain this fieldname, not testdocument.

3

Great! Thanks.
From the documentation I thought “mugshot” was an arbitrary name but it is actually the name of the image/fileField.
Completely missed that. It makes sense.
Just run the test and it works.