[Product Variation Attributes] Do not use ignore case when renaming attributes

RELEASE-NOTES.txt

@@ -4,6 +4,7 @@
 
 20.5
 -----
+- [*] Fixes a bug that prevented users to rename the Product Variation Attributes to because of case insensitive checks [https://github.com/woocommerce/woocommerce-android/pull/12608]
 - [*] Users can directly pick product images when creating Blaze ads [https://github.com/woocommerce/woocommerce-android/pull/12610]
 
 20.4

WooCommerce/src/main/kotlin/com/woocommerce/android/ui/products/details/ProductDetailViewModel.kt

@@ -1664,7 +1664,7 @@ class ProductDetailViewModel @Inject constructor(
     fun renameAttributeInDraft(attributeId: Long, oldAttributeName: String, newAttributeName: String): Boolean {
         // first make sure an attribute with the new name doesn't already exist in the draft
         productDraftAttributes.forEach {
-            if (it.name.equals(newAttributeName, ignoreCase = true)) {
+            if (it.name.equals(newAttributeName)) {
                 triggerEvent(ShowSnackbar(R.string.product_attribute_name_already_exists))
                 return false
             }

WooCommerce/src/test/kotlin/com/woocommerce/android/ui/products/details/ProductDetailViewModelTest.kt

@@ -8,6 +8,7 @@ import com.woocommerce.android.analytics.AnalyticsTrackerWrapper
 import com.woocommerce.android.extensions.takeIfNotEqualTo
 import com.woocommerce.android.media.MediaFilesRepository
 import com.woocommerce.android.media.ProductImagesServiceWrapper
+import com.woocommerce.android.model.ProductAttribute
 import com.woocommerce.android.model.ProductVariation
 import com.woocommerce.android.tools.NetworkStatus
 import com.woocommerce.android.tools.SelectedSite
@@ -742,6 +743,37 @@ class ProductDetailViewModelTest : BaseUnitTest() {
         Assertions.assertThat(draftTerms[1]).isEqualTo(firstTerm)
     }
 
+    @Test
+    fun `Re-name attribute terms is saved correctly`() = testBlocking {
+        viewModel.productDetailViewStateData.observeForever { _, _ -> }
+        val attributeName = "name"
+        val newName = attributeName.replaceFirstChar { it.uppercase() }
+
+        val attributes = ArrayList<ProductAttribute>()
+        attributes.add(
+            ProductAttribute(
+                id = 1,
+                name = attributeName,
+                isVariation = true,
+                isVisible = true,
+                terms = ArrayList<String>().also {
+                    it.add("one")
+                }
+            )
+        )
+
+        val storedProduct = product.copy(
+            attributes = attributes
+        )
+        doReturn(storedProduct).whenever(productRepository).getProductAsync(any())
+
+        viewModel.start()
+        viewModel.renameAttributeInDraft(1, attributeName, newName)
+
+        val draftAttribute = viewModel.productDraftAttributes[0]
+        Assertions.assertThat(draftAttribute.name).isEqualTo(newName)
+    }
+
     /**
      * Protection for a race condition bug in Variations.
      *