Add test for IOHandler

theodolite-quarkus/src/main/kotlin/theodolite/util/IOHandler.kt

@@ -4,7 +4,6 @@ import com.google.gson.GsonBuilder
 import mu.KotlinLogging
 import java.io.File
 import java.io.PrintWriter
-import java.lang.IllegalArgumentException
 
 private val logger = KotlinLogging.logger {}
 

theodolite-quarkus/src/test/kotlin/theodolite/util/IOHandlerTest.kt

+package theodolite.util
+
+import com.google.gson.GsonBuilder
+import io.quarkus.test.junit.QuarkusTest
+import org.junit.Rule
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Test
+import org.junit.rules.TemporaryFolder
+
+
+const val FOLDER_URL = "Test-Folder"
+@QuarkusTest
+internal class IOHandlerTest {
+
+    @Rule
+    var temporaryFolder = TemporaryFolder()
+
+    @Test
+    fun testWriteStringToText() {
+        temporaryFolder.create()
+        val testContent = "Test-File-Content"
+        val folder = temporaryFolder.newFolder(FOLDER_URL)
+
+        IOHandler().writeStringToTextFile(
+            fileURL = "${folder.absolutePath}/test-file.txt",
+            data = testContent)
+
+        assertEquals(
+           testContent,
+            IOHandler().readFileAsString("${folder.absolutePath}/test-file.txt")
+        )
+    }
+
+    @Test
+    fun testWriteToCSVFile() {
+        temporaryFolder.create()
+        val folder = temporaryFolder.newFolder(FOLDER_URL)
+
+        val testContent = listOf(
+            listOf("apples","red"),
+            listOf("bananas","yellow"),
+            listOf("avocado","brown"))
+        val columns = listOf("Fruit", "Color")
+
+        IOHandler().writeToCSVFile(
+            fileURL = "${folder.absolutePath}/test-file",
+            data = testContent,
+            columns = columns)
+
+        var expected = "Fruit,Color\n"
+        testContent.forEach { expected += it[0] + "," +  it[1] + "\n" }
+
+        assertEquals(
+            expected.trim(),
+            IOHandler().readFileAsString("${folder.absolutePath}/test-file.csv")
+        )
+    }
+
+    @Test
+    fun testWriteToJSONFile() {
+        temporaryFolder.create()
+        val folder = temporaryFolder.newFolder(FOLDER_URL)
+        val testContent = Resource(0, emptyList())
+
+        IOHandler().writeToJSONFile(
+            fileURL =  "${folder.absolutePath}/test-file.json",
+            objectToSave = testContent)
+
+        val expected = GsonBuilder().enableComplexMapKeySerialization().setPrettyPrinting().create().toJson(testContent)
+
+        assertEquals(
+            expected,
+            IOHandler().readFileAsString("${folder.absolutePath}/test-file.json")
+        )
+    }
+}