PPHA-477: Adding cancer diagnosis page and tests

Author: jamiefalcus

lung_cancer_screening/core/tests/acceptance/helpers/user_interaction_helpers.py

@@ -0,0 +1,23 @@
+from django import forms
+from ...nhsuk_forms.typed_choice_field import TypedChoiceField
+from ..models.cancer_diagnosis_response import CancerDiagnosisResponse
+
+
+class CancerDiagnosisForm(forms.ModelForm):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
+        self.fields["value"] = TypedChoiceField(
+            choices=[(True, 'Yes'), (False, 'No')],
+            widget=forms.RadioSelect,
+            label="If you have ever been diagnosed with cancer",
+            label_classes="nhsuk-fieldset__legend--l",
+            coerce=lambda x: x == 'True',
+            error_messages={
+                'required': 'Select if you have been diagnosed with cancer'
+            }
+        )
+
+    class Meta:
+        model = CancerDiagnosisResponse
+        fields = ['value']

lung_cancer_screening/questions/forms/cancer_diagnosis_form.py

@@ -0,0 +1,9 @@
+{% extends 'question_form.jinja' %}
+
+{% block prelude %}
+
+  <h1 class="nhsuk-heading-l">If you have ever been diagnosed with cancer</h1>
+
+  <p>If you have ever been diagnosed with any type of cancer it may impact your chances of developing lung cancer.
+
+{% endblock prelude %}

lung_cancer_screening/questions/jinja2/cancer_diagnosis.jinja

@@ -0,0 +1,19 @@
+# Generated by Django 5.2.9 on 2025-12-30 09:30
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('questions', '0033_weightresponse'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='haveyoueversmokedresponse',
+            name='response_set',
+            field=models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, related_name='have_you_ever_smoked_response', to='questions.responseset'),
+        ),
+    ]

lung_cancer_screening/questions/migrations/0034_alter_haveyoueversmokedresponse_response_set.py

@@ -0,0 +1,27 @@
+# Generated by Django 5.2.9 on 2025-12-30 09:41
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('questions', '0034_alter_haveyoueversmokedresponse_response_set'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='CancerDiagnosisResponse',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('value', models.BooleanField()),
+                ('response_set', models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, related_name='cancer_diagnosis_response', to='questions.responseset')),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+    ]

lung_cancer_screening/questions/migrations/0035_cancerdiagnosisresponse.py

@@ -9,3 +9,4 @@
 from .respiratory_conditions_response import RespiratoryConditionsResponse # noqa: F401
 from .sex_at_birth_response import SexAtBirthResponse # noqa: F401
 from .weight_response import WeightResponse # noqa: F401
+from .cancer_diagnosis_response import CancerDiagnosisResponse

lung_cancer_screening/questions/models/__init__.py

@@ -0,0 +1,9 @@
+from django.db import models
+
+from .base import BaseModel
+from .response_set import ResponseSet
+
+
+class CancerDiagnosisResponse(BaseModel):
+    response_set = models.OneToOneField(ResponseSet, on_delete=models.CASCADE, related_name='cancer_diagnosis_response')
+    value = models.BooleanField()

lung_cancer_screening/questions/models/cancer_diagnosis_response.py

@@ -76,6 +76,13 @@ def asbestos_exposure(self):
 
         return "Yes" if self.response_set.asbestos_exposure_response.value else "No"
 
+    @property
+    def cancer_diagnosis(self):
+        if not hasattr(self.response_set, 'cancer_diagnosis_response'):
+            return None
+
+        return "Yes" if self.response_set.cancer_diagnosis_response.value else "No"
+
     @property
     def respiratory_conditions(self):
         if not hasattr(self.response_set, 'respiratory_conditions_response'):

lung_cancer_screening/questions/presenters/response_set_presenter.py

@@ -0,0 +1,12 @@
+import factory
+
+from .response_set_factory import ResponseSetFactory
+from ...models.cancer_diagnosis_response import CancerDiagnosisResponse
+
+
+class CancerDiagnosisResponseFactory(factory.django.DjangoModelFactory):
+    class Meta:
+        model = CancerDiagnosisResponse
+
+    response_set = factory.SubFactory(ResponseSetFactory)
+    value = factory.Faker('boolean')

lung_cancer_screening/questions/tests/factories/cancer_diagnosis_response_factory.py

@@ -0,0 +1,54 @@
+from django.test import TestCase, tag
+
+from ...factories.response_set_factory import ResponseSetFactory
+from ....models.cancer_diagnosis_response import CancerDiagnosisResponse
+from ....forms.cancer_diagnosis_form import CancerDiagnosisForm
+
+@tag("CancerDiagnosis")
+class TestCancerDiagnosisForm(TestCase):
+    def setUp(self):
+        self.response_set = ResponseSetFactory()
+        self.response = CancerDiagnosisResponse.objects.create(
+            response_set=self.response_set,
+            value=False
+        )
+
+
+    def test_is_valid_with_a_valid_value(self):
+        form = CancerDiagnosisForm(
+            instance=self.response,
+            data={
+                "value": False
+            }
+        )
+        self.assertTrue(form.is_valid())
+        self.assertEqual(
+            form.cleaned_data["value"],
+            False
+        )
+
+    def test_is_invalid_with_an_invalid_value(self):
+        form = CancerDiagnosisForm(
+            instance=self.response,
+            data={
+                "value": "invalid"
+            }
+        )
+        self.assertFalse(form.is_valid())
+        self.assertEqual(
+            form.errors["value"],
+            ["Select a valid choice. invalid is not one of the available choices."]
+        )
+
+    def test_is_invalid_when_no_option_is_selected(self):
+        form = CancerDiagnosisForm(
+            instance=self.response,
+            data={
+                "value": None
+            }
+        )
+        self.assertFalse(form.is_valid())
+        self.assertEqual(
+            form.errors["value"],
+            ["Select if you have been diagnosed with cancer"]
+        )