Using now XPath to assert generated invoices

e-invoicing-domain/build.gradle.kts

@@ -13,6 +13,7 @@ val mustangVersion: String by project
 val klfVersion: String by project
 
 val assertKVersion: String by project
+val xunitVersion: String by project
 
 dependencies {
     implementation("org.mustangproject:library:$mustangVersion")
@@ -23,6 +24,7 @@ dependencies {
     testImplementation(kotlin("test"))
 
     implementation("com.willowtreeapps.assertk:assertk:$assertKVersion")
+    testImplementation("org.xmlunit:xmlunit-core:$xunitVersion")
 }
 
 

e-invoicing-domain/src/test/kotlin/net/codinux/invoicing/creation/EInvoiceCreatorTest.kt

@@ -1,9 +1,10 @@
 package net.codinux.invoicing.creation
 
 import assertk.assertThat
-import assertk.assertions.contains
 import assertk.assertions.isNotEmpty
 import net.codinux.invoicing.test.DataGenerator
+import net.codinux.invoicing.test.XPathAsserter
+import java.math.BigDecimal
 import kotlin.test.Test
 
 class EInvoiceCreatorTest {
@@ -35,8 +36,43 @@ class EInvoiceCreatorTest {
     private fun assertInvoiceXml(xml: String) {
         assertThat(xml).isNotEmpty()
 
-        assertThat(xml).contains("<ram:ID>${DataGenerator.InvoiceNumber}</ram:ID>")
-        assertThat(xml).contains("""<udt:DateTimeString format="102">${DataGenerator.InvoicingDate.toString().replace("-", "")}</udt:DateTimeString>""")
+        val asserter = XPathAsserter(xml)
+
+        asserter.xpathHasValue("//rsm:ExchangedDocument/ram:ID", DataGenerator.InvoiceNumber)
+        asserter.xpathHasValue("//rsm:ExchangedDocument/ram:IssueDateTime/udt:DateTimeString", DataGenerator.InvoicingDate.toString().replace("-", ""))
+
+        val senderXPath = "//rsm:SupplyChainTradeTransaction/ram:ApplicableHeaderTradeAgreement/ram:SellerTradeParty"
+        assertParty(asserter, senderXPath, DataGenerator.SenderName, DataGenerator.SenderStreet, DataGenerator.SenderPostalCode, DataGenerator.SenderCity, DataGenerator.SenderVatId, DataGenerator.SenderEmail)
+
+        val receiverXPath = "//rsm:SupplyChainTradeTransaction/ram:ApplicableHeaderTradeAgreement/ram:BuyerTradeParty"
+        assertParty(asserter, receiverXPath, DataGenerator.RecipientName, DataGenerator.RecipientStreet, DataGenerator.RecipientPostalCode, DataGenerator.RecipientCity, DataGenerator.RecipientVatId, DataGenerator.RecipientEmail)
+
+        val lineItemXPath = "//rsm:SupplyChainTradeTransaction/ram:IncludedSupplyChainTradeLineItem"
+        assertLineItem(asserter, lineItemXPath, DataGenerator.ItemName, DataGenerator.ItemUnit, DataGenerator.ItemQuantity, DataGenerator.ItemPrice, DataGenerator.ItemVat, DataGenerator.ItemDescription)
+    }
+
+    private fun assertParty(asserter: XPathAsserter, partyXPath: String, name: String, street: String, postalCode: String, city: String, vatId: String, email: String) {
+        asserter.xpathHasValue("$partyXPath/ram:Name", name)
+
+        asserter.xpathHasValue("$partyXPath/ram:PostalTradeAddress/ram:LineOne", street)
+        asserter.xpathHasValue("$partyXPath/ram:PostalTradeAddress/ram:PostcodeCode", postalCode)
+        asserter.xpathHasValue("$partyXPath/ram:PostalTradeAddress/ram:CityName", city)
+
+        asserter.xpathHasValue("$partyXPath/ram:SpecifiedTaxRegistration/ram:ID", vatId)
+
+        asserter.xpathHasValue("$partyXPath/ram:URIUniversalCommunication/ram:URIID", email)
+    }
+
+    private fun assertLineItem(asserter: XPathAsserter, partyXPath: String, name: String, unit: String, quantity: BigDecimal, price: BigDecimal, vatPercentage: BigDecimal, description: String?) {
+        asserter.xpathHasValue("$partyXPath/ram:SpecifiedTradeProduct/ram:Name", name)
+
+        asserter.xpathHasValue("$partyXPath/ram:SpecifiedLineTradeDelivery/ram:BilledQuantity/@unitCode", unit)
+        asserter.xpathHasValue("$partyXPath/ram:SpecifiedLineTradeDelivery/ram:BilledQuantity", quantity, 4)
+
+        asserter.xpathHasValue("$partyXPath/ram:SpecifiedLineTradeSettlement/ram:SpecifiedTradeSettlementLineMonetarySummation/ram:LineTotalAmount", price, 2)
+        asserter.xpathHasValue("$partyXPath/ram:SpecifiedLineTradeSettlement/ram:ApplicableTradeTax/ram:RateApplicablePercent", vatPercentage, 2)
+
+//        asserter.xpathHasValue("$partyXPath/ram:URIUniversalCommunication/ram:URIID", description)
     }
 
 }

e-invoicing-domain/src/test/kotlin/net/codinux/invoicing/test/XPathAsserter.kt

@@ -0,0 +1,34 @@
+package net.codinux.invoicing.test
+
+import assertk.assertThat
+import assertk.assertions.isEqualTo
+import net.codinux.log.Platform
+import org.xmlunit.builder.Input
+import org.xmlunit.xpath.JAXPXPathEngine
+import java.math.BigDecimal
+import java.math.RoundingMode
+
+class XPathAsserter(
+    xml: String
+) {
+
+    private val source = Input.fromString(xml).build()
+
+    private val xpathEngine = JAXPXPathEngine().apply {
+        setNamespaceContext(mapOf(
+            "rsm" to "urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100",
+            "ram" to "urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100",
+            "udt" to "urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100"
+        ))
+    }
+
+
+    fun xpathHasValue(xpath: String, value: String) {
+        assertThat(xpathEngine.evaluate(xpath, source)).isEqualTo(value)
+    }
+
+    fun xpathHasValue(xpath: String, value: BigDecimal, countDecimalPlatform: Int = 2) {
+        xpathHasValue(xpath, value.setScale(countDecimalPlatform, RoundingMode.HALF_UP).toString())
+    }
+
+}

gradle.properties

@@ -10,3 +10,4 @@ mustangVersion=2.14.2
 klfVersion=1.6.2
 
 assertKVersion=0.28.1
+xunitVersion=2.10.0