Add test cases for changes in ProductsTabProductViewModel.

Author: jaclync

WooCommerce/WooCommerceTests/ViewRelated/Products/ProductsTabProductViewModelTests.swift

@@ -93,6 +93,35 @@ final class ProductsTabProductViewModelTests: XCTestCase {
         XCTAssertTrue(detailsText.contains(expectedStockDetail))
     }
 
+    func test_details_contain_sku_when_isSKUShown_is_true() {
+        // Given
+        let sku = "pear"
+        let product = productMock(name: "Yay").copy(sku: sku)
+
+        // When
+        let viewModel = ProductsTabProductViewModel(product: product, isSKUShown: true)
+        let detailsText = viewModel.detailsAttributedString.string
+
+        // Then
+        let skuFormat = NSLocalizedString("SKU: %1$@", comment: "Label about the SKU of a product in the product list. Reads, `SKU: productSku`")
+        let expectedSKU = String.localizedStringWithFormat(skuFormat, sku)
+        XCTAssertTrue(detailsText.contains(expectedSKU))
+    }
+
+    func test_details_do_not_contain_sku_when_isSKUShown_is_false() {
+        // Given
+        let sku = "pear"
+        let product = productMock(name: "Yay").copy(sku: sku)
+
+        // When
+        let viewModel = ProductsTabProductViewModel(product: product, isSKUShown: false)
+        let detailsText = viewModel.detailsAttributedString.string
+
+        // Then
+        let skuFormat = NSLocalizedString("SKU: %1$@", comment: "Label about the SKU of a product in the product list. Reads, `SKU: productSku`")
+        let skuText = String.localizedStringWithFormat(skuFormat, sku)
+        XCTAssertFalse(detailsText.contains(skuText))
+    }
 }
 
 extension ProductsTabProductViewModelTests {