JUNIT: Migrate JsonOutputTest to Kotlin

src/test/kotlin/sirius/web/service/JsonOutputTest.kt

@@ -0,0 +1,32 @@
+/*
+ * Made with all the love in the world
+ * by scireum in Remshalden, Germany
+ *
+ * Copyright by scireum GmbH
+ * http://www.scireum.de - info@scireum.de
+ */
+
+package sirius.web.service
+
+
+import sirius.kernel.xml.Attribute
+import sirius.web.services.JSONStructuredOutput
+import java.io.ByteArrayOutputStream
+
+import kotlin.test.Test
+import kotlin.test.assertEquals
+/**
+ * Tests the [JSONStructuredOutput] class.
+ */
+class JsonOutputTest {
+    @Test
+    fun `json output uses attributes`() {
+        val os =  ByteArrayOutputStream()
+        val out =  JSONStructuredOutput(os, null, "UTF8");
+        out.beginResult("test")
+        out.beginObject("1", Attribute.set("a", "b"))
+        out.endObject()
+        out.endResult()
+        assertEquals("""{"1":{"a":"b"}}""",os.toString())
+    }
+}