CDrive free space was going down

My HDD free space is usually 30 GB. On weekends in last month, I noticed that machine performance was too slow. Then I checked HDD free space, which is less than 10GB. Used system cleanup for C Drive and got another 500 MB space.

Did few google search and found utility - TreeSize to get to know the utilized space by each directory.

Lastly found that Office cache had more than 30 GB for Office 2015 and Office 2016 versions. Removed all cache from following directories and Machine performance is so much better.

**Office Cache - C:\Users\\AppData\Local\Microsoft\Office\16.0\OfficeFileCache1
**Office Cache - C:\Users\\AppData\Local\Microsoft\Office\15.0\OfficeFileCache
**Office Cache - C:\Users\\AppData\Microsoft\Office\15.0\OfficeFileCache

Invoking OneDrive for Business App

Using OneDrive for Business app for few years to sync official related documents. Much useful to share the documents with colleagues.

Couple of times, I noticed that after OneDrive app is not there after restarting the system. Tried different solutions and this one is working always. To invoke the OneDrive app, you open 'OneDrive.exe' under your profile ==> [C:\Users\[userId]\AppData\Local\Microsoft\OneDrive\]

Big Data Testing - Part 1

Today many enterprise companies have flooded with data. Current technological advancements have led to overwhelming amount of data from distinctive domains like internet of things (sensors), health care, ecommerce and financial companies. The term big data was coined to capture the meaning of this emerging trend.

Big Data is helpful to take better business decisions on different kind of business. The data should not contain any bad data and incomplete data. It has different analytics for variety of business needs. It is used in customer segmentation, Product performance, fraud detection, social media analytics, sentimental analysis, predictive analytics, Financial risk analysis etc.

Big Data Ecosystem

A generic big data implementation has four stages:

1. Capture Data from multiple sources (Data Ingestion)
2. Storage for huge data
3. Data Processing (Loading and transformation)
4. Analyze layer (Analytics & Reports)

Like components ecosystem, the big data system can be decomposed into a layered structure and divisible into three layers, i.e., the infrastructure layer, the computing layer, and the application layer, from bottom to top. This layered view only provides a conceptual hierarchy to underscore the complexity of a big data system.

Big Data Testing Approach
Bad data can cause great difficulties for analysis and make decisions. Also, Poor implementation can lead to poor quality, delays in testing and increased cost. The right test strategy should ensure both functional testing and non-functional testing.

Test approach can be varied based on type of data processing like Stream processing and batch processing and type of analytics solution used. If big data implementation has less stages or few components and Testing techniques also will be reduces based on components availability.

Functional Testing

• Data Flow Validation
• Data Integrity
• Data Ingestion Layer validation
• Data Storage Layer
• Data Processing Layer
• Analytics & Reports Layer

Non-Functional Testing

• Data Quality Monitoring
• Infrastructure
• Data Security
• Performance Benchmarking
• Fault Tolerance
• Fail Over Mechanism

Will explain each of testing in next post.

Tools learning for testing

Many times folks used to ask, what tools would be good for testing career. Used to advice to learn popular tools (mostly commercial tools) based on their coding skills and interest. But this scenario is changed in last few years. Testers should be ready to handle the automation based on business needs, rather than just toolsmiths. Also mindset change should be there, instead of sticking with just one tool and one scripting language

Read an article recently in this line and few excerpts..


It’s important to ask yourself, why do you want to learn about a specific tool or set of tools? They are an integral part of software testing, supporting what we do on a daily basis. However, having knowledge of a set of tools is less important than knowing when and where to use the right tool. An effective tester will also have the skill to know when and where to use the right tool because the problem requires it, not because the job market determines it desirable. Using the wrong tool at the wrong time can have adverse effects on your day-to-day work, potentially slowing you down, or worse, giving you biased or flat out false information. That’s not to say you shouldn’t explore new tools, but always remember:

Problem first, tools second
With this concept in mind, let’s explore different categories of tools. Some examples will be offered but they are by no means an exhaustive list. I encourage you to build up a toolbox or reference list of tools you have used in the past.

Original Article - What Tools Should I Learn?

Handling multi-dimensional array in vbscript

Was trying to build excel data provider, which can be used for Test Complete and QTP scripts. Created a VBScript to keep all excel contents into a multi-dimensional array.

Problem
Declared array with lower limits and then used ReDim to fix with right count. But I was able to retrieve the data only upto the initial array size.

Solution:
Tried different ways. Then declared array without any size as given in below code.

Code:

'-------------------------------------------------------------------------
' File     :   ExcelReadByArrays.vbs
' Author    :   PalaniSelvam Thillaiappan
' Purpose   :   To read the given sheet contents .
'-------------------------------------------------------------------------
'' Usage
'' cscript D:\MyCode\qtp_uft\ExcelReadByArrays.vbs 
'' test data: D:\MyCode\qtp_uft\testMyApp_1.xlsx
'******** Variables Declaration

Dim gsExcelFile, giStartRow, giStartCol, giEndRow, giEndCol, giSheetIndex
Dim gsLogFile
Dim arrExcelData() 'as all Rows data
'''Dim arrExcelData(5, 5) 'as all Rows data


giSheetIndex = 1
gsExcelFile = "D:\MyCode\qtp_uft\testMyApp_1.xlsx"


'' Working fine, but array size should be given properly
ExcelDataRead gsExcelFile, giSheetIndex, arrExcelData
PrintArrays arrExcelData

'--------------------------------------
' Method    :   ExcelDataRead
' Author    :   PalaniSelvam Thillaiappan
' Purpose   :   Read all the contents from Excel sheet and write into log file
' Parameters:   sExcelFile - String, contains the Excel file
'      :  iSheetIndex - Integer, Value for Sheet Index
'--------------------------------------
Sub ExcelDataRead(sExcelFile, iSheetIndex, ByRef arrExcel)
 Dim sExcelPath 'As Variant  'Excel file
 '********** Excel object declaration **********'
  ' Excel Application object
 Dim objExcel 'As Excel.Application
 Dim objXLWorkbooks 'As Excel.Workbooks
 Dim objXLWorkbook 'As Excel.Workbook

 Dim WorkSheetCount 'As Variant  'Work sheets count in a excel
 Dim CurrentWorkSheet 'As Excel.Worksheet    ' Current worksheet
 Dim objCells 'As Excel.Range
 Dim objCurrentCell 'As Variant
 Dim objFont 'As Variant

 ' Result contents
 Dim sCellText 'As Variant
 Dim sFontName 'As Variant
 Dim sFontStyle 'As Variant
 Dim iFontSize 'As Variant
 Dim iCellTextColorIndex 'As Variant
 Dim iCellInteriorColorIndex 'As Variant
 Dim sResult 'As Variant
 Dim sChartFile 'As String


 ' Row and Col integer variables
 Dim iUsedRowsCount 'As Integer
 Dim iUsedColsCount 'As Integer
 Dim iTop, iLeft 'As Integer
 Dim iRow 'As Integer     'Row item
 Dim iCol 'As Integer     'Col item
 Dim iCurRow 'As Integer
 Dim iCurCol 'As Integer
 Dim arrColList 'As Array - Column Name

 If (sExcelFile = "") Then
   sExcelPath = "D:\MyCode\qtp_uft\testMyApp_1.xlsx"
 Else
   sExcelPath = sExcelFile
 End If

 If (iSheetIndex = "") Then
  iSheetIndex = 2
 End If

 Set objExcel = CreateObject("Excel.Application")
 objExcel.Workbooks.Open sExcelPath, False, True

 On Error Resume Next

 WorkSheetCount = objExcel.Worksheets.Count

 Set objXLWorkbook = objExcel.ActiveWorkbook
 'objXLWorkbook.RunAutoMacros

 Set CurrentWorkSheet = objExcel.ActiveWorkbook.Worksheets(iSheetIndex) 'iSheetIndex worksheet

 iUsedRowsCount = CurrentWorkSheet.UsedRange.Rows.Count
 iUsedColsCount = CurrentWorkSheet.UsedRange.Columns.Count
 iTop = CurrentWorkSheet.UsedRange.Row
 iLeft = CurrentWorkSheet.UsedRange.Column

 CurrentWorkSheet.UsedRange.Columns.AutoFit()
 ' Cells object
 CurrentWorkSheet.Cells.Activate
 
 ReDim Preserve arrExcel(iUsedRowsCount, iUsedColsCount)
    ''ReDim arrColList(iUsedColsCount)


 For iRow = iTop To iUsedRowsCount   '(iUsedRowsCount - 1)
 
   'Read All Columns
   For iCol = iLeft To iUsedColsCount  '(iUsedColsCount - 1)

     sResult = ""
     Set objCurrentCell = CurrentWorkSheet.Cells(iRow, iCol)
     sCellText = objCurrentCell.Text
     sResult = "Reading Cell {" & CStr(iRow) & ", " & CStr(iCol) & "}^" & sCellText & "^" 
     WScript.echo sResult
     Set objCurrentCell = Nothing
     arrExcel (iRow-1, iCol-1) = sCellText
   Next

 Next
  
 ' This will prevent Excel from prompting us to save the workbook.
 objExcel.ActiveWorkbook.Saved = True
 Set CurrentWorkSheet = Nothing

 'objExcel.Worksbooks.Close
 objExcel.Quit

 ''Set CurrentWorkSheet = Nothing
 Set objExcel = Nothing


 'MsgBox "Read Completed.", vbOKOnly, "Exec Over"
 Exit Sub

 ErrorHandler1:
 'MsgBox "Error # " & CStr(Err.Number) & " " & Err.Description
 'Err.Clear   ' Clear the error.

End Sub

'' To display given array
Sub PrintArrays( arrList)
'' To Print all list items
Dim aValue      'array item ==> dictionary
Dim aItem       'dictionaly item ==> key-pair value
Dim iRow
Dim iCol


     WScript.echo "Array Rows Count: ",UBound (arrList, 1)  '' First Array
     WScript.echo "Array Columns Count: ",UBound (arrList, 2) ''Second Array


    For iRow =LBound(arrList) to UBound (arrList)-1

       For iCol=LBound(arrList,2) to UBound (arrList,2)-1
         aValue = arrList(iRow, iCol)

         WScript.echo iRow, iCol, " Value:", aValue

        Next

    Next


End Sub