If you omit the assertEquals and the @Test then there is no issue.
i.e. using:-
@SuppressLint("Range") fun addCursorTest() { val columns: Array<String> = arrayOf( "name", "age" ) val matrixCursor : Cursor = MatrixCursor(columns).apply { addRow(arrayOf("name1", 18)) addRow(arrayOf("name2", 26)) } Log.d("CURSORINFO","Cursor Count is ${matrixCursor.count}") while (matrixCursor.moveToNext()) { val sb = StringBuilder() for (s in matrixCursor.columnNames) { sb.append("\n\tColumn is ${s} Value is ") sb.append(matrixCursor.getString(matrixCursor.getColumnIndex(s))).append(" ") } Log.d("CURSORINFO",sb.toString()) } println("cursor count = ${matrixCursor.count}") //prints "cursor count = 0" //assertEquals(2, matrixCursor.count) }
@SuppressLint("Range") added as for whatever reason the potential for a -1 (column not found result from getColumnIndex(the_column) results in a range error, of course just will not happen when traversing the columns in the actual Cursor unless the Cursor has been corrupted)
results in the log including:-
2023-06-09 10:17:29.550 D/CURSORINFO: Cursor Count is 2 2023-06-09 10:17:29.551 D/CURSORINFO: Column is name Value is name1 Column is age Value is 18 2023-06-09 10:17:29.551 D/CURSORINFO: Column is name Value is name2 Column is age Value is 26 2023-06-09 10:17:29.551 I/System.out: cursor count = 2
You may wish to refer to assertEquals not working as expected with Set in Kotlin
