Fix QuestionnaireViewItem answers change not updating state

By implement custom equals and hashcode, that on top of structural equality
also checks that two questionnaireViewItems have the same response

Author: LZRS

datacapture/src/androidTest/java/com/google/android/fhir/datacapture/test/views/EditTextDecimalViewHolderFactoryInstrumentedTest.kt

@@ -498,4 +498,41 @@ class EditTextDecimalViewHolderFactoryInstrumentedTest {
       .onNodeWithTag(EDIT_TEXT_FIELD_TEST_TAG, useUnmergedTree = true)
       .assertTextEquals("")
   }
+
+  @Test
+  fun displaysCorrectTextOnQuestionnaireViewItemAnswerUpdate() {
+    val questionnaireViewItem =
+      QuestionnaireViewItem(
+        Questionnaire.QuestionnaireItemComponent().apply { text = "Weight" },
+        QuestionnaireResponse.QuestionnaireResponseItemComponent().apply {
+          answer =
+            listOf(
+              QuestionnaireResponse.QuestionnaireResponseItemAnswerComponent().apply {
+                value = DecimalType("124.5")
+              },
+            )
+        },
+        validationResult = NotValidated,
+        answersChangedCallback = { _, _, _, _ -> },
+      )
+
+    viewHolder.bind(questionnaireViewItem)
+    composeTestRule.onNodeWithTag(EDIT_TEXT_FIELD_TEST_TAG).assertTextEquals("124.5")
+
+    val questionnaireViewItemUpdatedAnswer =
+      questionnaireViewItem.copy(
+        questionnaireResponseItem =
+          questionnaireViewItem.getQuestionnaireResponseItem().apply {
+            answer =
+              listOf(
+                QuestionnaireResponse.QuestionnaireResponseItemAnswerComponent().apply {
+                  value = DecimalType("124.578")
+                },
+              )
+          },
+      )
+    viewHolder.bind(questionnaireViewItemUpdatedAnswer)
+
+    composeTestRule.onNodeWithTag(EDIT_TEXT_FIELD_TEST_TAG).assertTextEquals("124.578")
+  }
 }

datacapture/src/androidTest/java/com/google/android/fhir/datacapture/test/views/EditTextIntegerViewHolderFactoryInstrumentedTest.kt

@@ -431,4 +431,41 @@ class EditTextIntegerViewHolderFactoryInstrumentedTest {
       .onNodeWithTag(EDIT_TEXT_FIELD_TEST_TAG, useUnmergedTree = true)
       .assertTextEquals("")
   }
+
+  @Test
+  fun displaysCorrectTextOnQuestionnaireViewItemAnswerUpdate() {
+    val questionnaireViewItem =
+      QuestionnaireViewItem(
+        Questionnaire.QuestionnaireItemComponent().apply { text = "Age" },
+        QuestionnaireResponse.QuestionnaireResponseItemComponent().apply {
+          answer =
+            listOf(
+              QuestionnaireResponse.QuestionnaireResponseItemAnswerComponent().apply {
+                value = IntegerType("12")
+              },
+            )
+        },
+        validationResult = NotValidated,
+        answersChangedCallback = { _, _, _, _ -> },
+      )
+
+    viewHolder.bind(questionnaireViewItem)
+    composeTestRule.onNodeWithTag(EDIT_TEXT_FIELD_TEST_TAG).assertTextEquals("12")
+
+    val questionnaireViewItemUpdatedAnswer =
+      questionnaireViewItem.copy(
+        questionnaireResponseItem =
+          questionnaireViewItem.getQuestionnaireResponseItem().apply {
+            answer =
+              listOf(
+                QuestionnaireResponse.QuestionnaireResponseItemAnswerComponent().apply {
+                  value = IntegerType("120")
+                },
+              )
+          },
+      )
+    viewHolder.bind(questionnaireViewItemUpdatedAnswer)
+
+    composeTestRule.onNodeWithTag(EDIT_TEXT_FIELD_TEST_TAG).assertTextEquals("120")
+  }
 }

datacapture/src/androidTest/java/com/google/android/fhir/datacapture/test/views/EditTextSingleLineViewHolderFactoryInstrumentedTest.kt

@@ -378,4 +378,41 @@ class EditTextSingleLineViewHolderFactoryInstrumentedTest {
 
     composeTestRule.onNodeWithText("Optional").assertDoesNotExist()
   }
+
+  @Test
+  fun displaysCorrectTextOnQuestionnaireViewItemAnswerUpdate() {
+    val questionnaireViewItem =
+      QuestionnaireViewItem(
+        Questionnaire.QuestionnaireItemComponent().apply { text = "First Name" },
+        QuestionnaireResponse.QuestionnaireResponseItemComponent().apply {
+          answer =
+            listOf(
+              QuestionnaireResponse.QuestionnaireResponseItemAnswerComponent().apply {
+                value = StringType("Jane")
+              },
+            )
+        },
+        validationResult = NotValidated,
+        answersChangedCallback = { _, _, _, _ -> },
+      )
+
+    viewHolder.bind(questionnaireViewItem)
+    composeTestRule.onNodeWithTag(EDIT_TEXT_FIELD_TEST_TAG).assertTextEquals("Jane")
+
+    val questionnaireViewItemUpdatedAnswer =
+      questionnaireViewItem.copy(
+        questionnaireResponseItem =
+          questionnaireViewItem.getQuestionnaireResponseItem().apply {
+            answer =
+              listOf(
+                QuestionnaireResponse.QuestionnaireResponseItemAnswerComponent().apply {
+                  value = StringType("Janette")
+                },
+              )
+          },
+      )
+    viewHolder.bind(questionnaireViewItemUpdatedAnswer)
+
+    composeTestRule.onNodeWithTag(EDIT_TEXT_FIELD_TEST_TAG).assertTextEquals("Janette")
+  }
 }

datacapture/src/main/java/com/google/android/fhir/datacapture/views/QuestionnaireViewItem.kt

@@ -267,4 +267,43 @@ data class QuestionnaireViewItem(
     }
     return validationResult == other.validationResult
   }
+
+  override fun equals(other: Any?): Boolean {
+    if (this === other) return true
+    if (javaClass != other?.javaClass) return false
+
+    other as QuestionnaireViewItem
+
+    // Structural equality
+    if (isHelpCardOpen != other.isHelpCardOpen) return false
+    if (questionnaireItem != other.questionnaireItem) return false
+    if (questionnaireResponseItem != other.questionnaireResponseItem) return false
+    if (validationResult != other.validationResult) return false
+    if (answersChangedCallback != other.answersChangedCallback) return false
+    if (enabledAnswerOptions != other.enabledAnswerOptions) return false
+    if (minAnswerValue != other.minAnswerValue) return false
+    if (maxAnswerValue != other.maxAnswerValue) return false
+    if (draftAnswer != other.draftAnswer) return false
+    if (enabledDisplayItems != other.enabledDisplayItems) return false
+    if (questionViewTextConfiguration != other.questionViewTextConfiguration) return false
+    if (helpCardStateChangedCallback != other.helpCardStateChangedCallback) return false
+
+    return hasTheSameResponse(other)
+  }
+
+  override fun hashCode(): Int {
+    var result = isHelpCardOpen.hashCode()
+    result = 31 * result + questionnaireItem.hashCode()
+    result = 31 * result + questionnaireResponseItem.hashCode()
+    result = 31 * result + validationResult.hashCode()
+    result = 31 * result + answersChangedCallback.hashCode()
+    result = 31 * result + enabledAnswerOptions.hashCode()
+    result = 31 * result + (minAnswerValue?.hashCode() ?: 0)
+    result = 31 * result + (maxAnswerValue?.hashCode() ?: 0)
+    result = 31 * result + (draftAnswer?.hashCode() ?: 0)
+    result = 31 * result + enabledDisplayItems.hashCode()
+    result = 31 * result + questionViewTextConfiguration.hashCode()
+    result = 31 * result + helpCardStateChangedCallback.hashCode()
+    return result
+  }
 }