Tests: Add UnitTests folder

Tests/UnitTests/DocumentTests/PaymentVariantSummaryTest.cs

@@ -0,0 +1,29 @@
+using Elwig.Documents;
+using Elwig.Helpers;
+using Elwig.Models.Dtos;
+
+namespace Tests.UnitTests.DocumentTests {
+    [TestFixture]
+    public class PaymentVariantSummaryTest {
+
+        [Test]
+        public async Task Test_01_PaymentVariant2020() {
+            using var ctx = new AppDbContext();
+            var v = (await ctx.PaymentVariants.FindAsync(2020, 1))!;
+            var data = await PaymentVariantSummaryData.ForPaymentVariant(v, ctx.PaymentVariantSummaryRows);
+            using var doc = new PaymentVariantSummary(v, data);
+            var text = await Utils.GeneratePdfText(doc, true);
+            var table = Utils.ExtractTable(text);
+            Assert.Multiple(() => {
+                Assert.That(text, Contains.Substring("Auszahlungsvariante"));
+                Assert.That(text, Contains.Substring(v.Name));
+                Assert.That(table.Skip(17).ToArray(), Is.EqualTo(new string[][] {
+                     [                   "Gradation",   "ungebunden",   "attributlos gebunden",    "gebunden",     "Gesamt" ],
+                     [                     "[°Oe]",   "[kg]", "[€/kg]",    "[kg]", "[€/kg]",    "[kg]", "[€/kg]",    "[€]"  ],
+                     ["Grüner Veltliner",            "3 219",                 "0",                 "0",           "1 609,50"],
+                     ["Qualitätswein",      "73",    "3 219", "0,5000",       "-",      "-",       "-",      "-", "1 609,50"]
+                }));
+            });
+        }
+    }
+}