added tests for csharp generator

Author: HugoMario

src/test/java/io/swagger/codegen/v3/generators/dotnet/CSharpClientCodegenTest.java

@@ -0,0 +1,48 @@
+package io.swagger.codegen.v3.generators.dotnet;
+
+import io.swagger.codegen.v3.CodegenConfig;
+import io.swagger.codegen.v3.CodegenModel;
+import io.swagger.codegen.v3.ISchemaHandler;
+import io.swagger.codegen.v3.generators.AbstractCodegenTest;
+import io.swagger.codegen.v3.generators.CodegenWrapper;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+public class CSharpClientCodegenTest extends AbstractCodegenTest {
+
+    @Test
+    public void checkOneOfModelCreation() {
+        final OpenAPI openAPI = getOpenAPI("3_0_0/composed_schemas.yaml");
+        final CodegenConfig config = new CSharpClientCodegen();
+        final CodegenWrapper codegenWrapper = processSchemas(config, openAPI);
+
+        CodegenModel codegenModel = codegenWrapper.getAllModels().get("PartMaster");
+
+        boolean hasOneOfProperty = codegenModel.getVars()
+            .stream()
+            .anyMatch(codegenProperty -> codegenProperty.datatype.equals("OneOfPartMasterDestination"));
+
+        Assert.assertTrue(hasOneOfProperty);
+
+        hasOneOfProperty = codegenModel.getVars()
+            .stream()
+            .anyMatch(codegenProperty -> codegenProperty.datatype.equals("OneOfPartMasterOrigin"));
+
+        Assert.assertTrue(hasOneOfProperty);
+
+        final ISchemaHandler schemaHandler = codegenWrapper.getSchemaHandler();
+
+        boolean hasComposedModel = schemaHandler.getModels()
+            .stream()
+            .anyMatch(model -> model.name.equals("OneOfPartMasterDestination"));
+
+        Assert.assertTrue(hasComposedModel);
+
+        hasComposedModel = schemaHandler.getModels()
+            .stream()
+            .anyMatch(model -> model.name.equals("OneOfPartMasterOrigin"));
+
+        Assert.assertTrue(hasComposedModel);
+    }
+}