Accessing Files and I/O Functions

Overview

Sometimes using Rapise you need to access files on the Windows file system, either for testing purposes, or to object test data stored in a flat CSV, TSV or text file.

File Global Object

Normally file operations in Rapise are done with global File object.

function Test()
{
    var fn = "TestFile.txt";
    var cnt = "Hello world!";

    // Test exists/delete
    if (File.Exists(fn))
    {
        File.Delete(fn);
        Tester.Assert("File deleted", !File.Exists(fn));
    }

    // Test read/write
    File.Write(fn, cnt);
    if (Tester.Assert("File exists", File.Exists(fn)))
    {
        var text = File.Read(fn);
        Tester.AssertEqual("File write/read", text, cnt);
    }

    // Test append
    File.Write(fn, "C");
    File.Append(fn, "C");
    var text = File.Read(fn);
    Tester.AssertEqual("File append works", "CC", text);

    // Folder exists/create/delete
    var folderExists = File.FolderExists(".");
    Tester.Assert("Folder exists", folderExists);
    var testFolderPath = File.FolderInfo(".").Path;
    Tester.Message(testFolderPath);
    var subFolderPath = testFolderPath + "\\SubFolder20170314";
    File.CreateFolder(subFolderPath);
    Tester.Assert("Sub folder exists, CreateFolder works", File.FolderExists(subFolderPath));
    File.DeleteFolder(subFolderPath);
    Tester.Assert("Sub folder does not exist, DeleteFolder works", !File.FolderExists(subFolderPath));
}

FileSystemObject

Alternatively you can can access the file system using the FileSystemObject.

http://msdn.microsoft.com/en-us/library/aa242706(v=vs.60).aspx

function Test()
{
    //IOMode constants
    var IOMode_ForReading = 1;
    var IOMode_ForWriting = 2;
    var IOMode_ForAppending = 8;
    //var Format constants
    var IOFormat_ASCII = 0;
    var IOFormat_Unicode = -1;
    //This sample demonstrates how to manipulate the Windows file system using Rapise
    //We shall open a text file for writing in this simple example
    var fso = new ActiveXObject('Scripting.FileSystemObject');
    var ts = fso.CreateTextFile('C:\\Temp\\MyTestFile.txt');
    ts.Close();
    var file = fso.GetFile('C:\\Temp\\MyTestFile.txt');
    ts = file.OpenAsTextStream(IOMode_ForWriting, IOFormat_Unicode);
    ts.WriteLine('Hello World!');
    ts.Close();
    Tester.Message('Wrote File');
    //Now read this file back
    file = fso.GetFile('C:\\Temp\\MyTestFile.txt');
    ts = file.OpenAsTextStream(IOMode_ForReading, IOFormat_Unicode);
    var text = ts.ReadLine();
    Tester.Message(text);
    ts.Close();
}

See Also

• How-Tos