add mechanism to access common test data during both jvm and mocha ba…

…sed testing

rename commonTest/data to commonTest/resources to be process as test resources by the kotlin/Js compiler.
Add wrapper for test resources directory path for common testing

egklib/src/commonTest/kotlin/electionguard/core/TestHelpers.kt

@@ -41,6 +41,8 @@ fun assertContentNotEquals(a: ByteArray, b: ByteArray, message: String? = null)
     assertFalse(a.contentEquals(b), message)
 }
 
+expect val testResourcesDir: String
+
 fun generateRangeChaumPedersenProofKnownNonce(
     context: GroupContext
 ): ChaumPedersenRangeProofKnownNonce {

egklib/src/commonTest/kotlin/electionguard/core/UtilsKommTest.kt

@@ -0,0 +1,13 @@
+package electionguard.core
+
+import kotlin.test.Test
+import kotlin.test.assertTrue
+
+class UtilsKommTest {
+    private val testData = "$testResourcesDir/fakeBallots"
+
+    @Test
+    fun accessResources() {
+        assertTrue { pathExists(testData) }
+    }
+}

egklib/src/jsTest/kotlin/electionguard/core/TestHelpers.js.kt

@@ -0,0 +1,3 @@
+package electionguard.core
+
+actual val testResourcesDir = "kotlin"

egklib/src/jsTest/kotlin/electionguard/core/UtilsKommTest.js.kt

@@ -5,11 +5,7 @@ import kotlin.test.Test
 import kotlin.test.assertFalse
 import kotlin.test.assertTrue
 
-class UtilsKommTest {
-
-    companion object {
-        const val TEST_RESOURCES_DIR = "src/jsTest/resources"
-    }
+class UtilsKommTestJs {
 
     @Test
     fun testSimpleFileOperations() {
@@ -45,4 +41,11 @@ class UtilsKommTest {
         }
     }
 
+    @Test
+    fun accessResources() {
+        // the processed resources are put in kotlin subdirectory of the working directory
+        // build/js/packages/electionguard-kotlin-multiplatform-egklib-test
+        assertTrue { pathExists("kotlin/testFile.txt") }
+    }
+
 }

egklib/src/jvmTest/kotlin/electionguard/core/TestHelpers.jvm.kt

@@ -0,0 +1,3 @@
+package electionguard.core
+
+actual val testResourcesDir = "src/commonTest/resources"