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Option VBASupport 1
Option Explicit
Dim passCount As Integer
Dim failCount As Integer
Dim result As String
Function doUnitTest() As String
result = verify_stringplusdouble()
If failCount <> 0 Or passCount = 0 Then
doUnitTest = result
Else
doUnitTest = "OK"
End If
End Function
Function verify_stringplusdouble() as String
passCount = 0
failCount = 0
result = "Test Results" & Chr$(10) & "============" & Chr$(10)
DSD
SSD
DSS
result = result & Chr$(10) & "Tests passed: " & passCount & Chr$(10) & "Tests failed: " & failCount & Chr$(10)
verify_stringplusdouble = result
End Function
Sub DSD()
Dim testName As String
testName = "double = string + double"
Dim testCompute As String
Dim s As String
Dim d As Double
Dim r As Double
On Error GoTo ErrorHandler
testCompute = "s = null, d = null, r = s + d"
r = s + d
TestLog_ASSERT r = -1, testCompute & " .The result is: " & r
testCompute = "s = null, d = null, r = s & d"
r = s & d
TestLog_ASSERT r = 0, testCompute & " .The result is: " & r
testCompute = "s = null, d = 20, r = s + d"
d = 20
r = s + d
TestLog_ASSERT r = -1, testCompute & " .The result is: " & r
testCompute = "s = null, d = 20, r = s & d"
d = 20
r = s & d
TestLog_ASSERT r = 20, testCompute & " .The result is: " & r
''''''''''''''
s = "10"
Dim d2 As Double
testCompute = "s = '10', d = null, r = s + d"
r = s + d2
TestLog_ASSERT r = 10, testCompute & " .The result is: " & r
testCompute = "s = '10', d = null, r = s & d"
r = s & d2
TestLog_ASSERT r = 100, testCompute & " .The result is: " & r
testCompute = "s = '10', d = 20, r = s + d"
d2 = 20
r = s + d2
TestLog_ASSERT r = 30, testCompute & " .The result is: " & r
testCompute = "s = '10', d = 20, r = s & d"
d2 = 20
r = s & d2
TestLog_ASSERT r = 1020, testCompute & " .The result is: " & r
''''''''''''''
s = "abc"
Dim d3 As Double
testCompute = "s = 'abc', d = null, r = s + d"
r = s + d3
TestLog_ASSERT r = -1, testCompute & " .The result is: " & r
testCompute = "s = 'abc', d = null, r = s & d"
r = s & d3
TestLog_ASSERT r = -1, testCompute & " .The result is: " & r
testCompute = "s = 'abc', d = 20, r = s + d"
d3 = 20
r = s + d3
TestLog_ASSERT r = -1, testCompute & " .The result is: " & r
testCompute = "s = 'abc', d = 20, r = s & d"
d3 = 20
r = s & d3
TestLog_ASSERT r = -1, testCompute & " .The result is: " & r
Exit Sub
ErrorHandler:
r = -1
' TestLog_Comment "The next compute raises error: " & testCompute
Resume Next
End Sub
Sub SSD()
Dim testName As String
testName = "string = string + double"
Dim testCompute As String
Dim s As String
Dim d As Double
Dim r As String
On Error GoTo ErrorHandler
testCompute = "s = null, d = null, r = s + d"
r = s + d
TestLog_ASSERT r = "-1", testCompute & " .The result is: " & r
testCompute = "s = null, d = null, r = s & d"
r = s & d
TestLog_ASSERT r = "0", testCompute & " .The result is: " & r
testCompute = "s = null, d = 20, r = s + d"
d = 20
r = s + d
TestLog_ASSERT r = "-1", testCompute & " .The result is: " & r
testCompute = "s = null, d = 20, r = s & d"
d = 20
r = s & d
TestLog_ASSERT r = "20", testCompute & " .The result is: " & r
''''''''''''''
s = "10"
Dim d2 As Double
testCompute = "s = '10', d = null, r = s + d"
r = s + d2
TestLog_ASSERT r = "10", testCompute & " .The result is: " & r
testCompute = "s = '10', d = null, r = s & d"
r = s & d2
TestLog_ASSERT r = "100", testCompute & " .The result is: " & r
testCompute = "s = '10', d = 20, r = s + d"
d2 = 20
r = s + d2
TestLog_ASSERT r = "30", testCompute & " .The result is: " & r
testCompute = "s = '10', d = 20, r = s & d"
d2 = 20
r = s & d2
TestLog_ASSERT r = "1020", testCompute & " .The result is: " & r
''''''''''''''
s = "abc"
Dim d3 As Double
testCompute = "s = 'abc', d = null, r = s + d"
r = s + d3
TestLog_ASSERT r = "-1", testCompute & " .The result is: " & r
testCompute = "s = 'abc', d = null, r = s & d"
r = s & d3
TestLog_ASSERT r = "abc0", testCompute & " .The result is: " & r
testCompute = "s = 'abc', d = 20, r = s + d"
d3 = 20
r = s + d3
TestLog_ASSERT r = "-1", testCompute & " .The result is: " & r
testCompute = "s = 'abc', d = 20, r = s & d"
d3 = 20
r = s & d3
TestLog_ASSERT r = "abc20", testCompute & " .The result is: " & r
Exit Sub
ErrorHandler:
r = "-1"
' TestLog_Comment "The next compute raises error: " & testCompute
Resume Next
End Sub
Sub DSS()
Dim testName As String
testName = "double = string + string"
Dim testCompute As String
Dim s As String
Dim d As String
Dim r As Double
On Error GoTo ErrorHandler
testCompute = "s = null, d = null, r = s + d"
r = s + d
TestLog_ASSERT r = -1, testCompute & " .The result is: " & r
testCompute = "s = null, d = null, r = s & d"
r = s & d
TestLog_ASSERT r = -1, testCompute & " .The result is: " & r
testCompute = "s = null, d = 20, r = s + d"
d = "20"
r = s + d
TestLog_ASSERT r = 20, testCompute & " .The result is: " & r
testCompute = "s = null, d = 20, r = s & d"
d = "20"
r = s & d
TestLog_ASSERT r = 20, testCompute & " .The result is: " & r
''''''''''''''
s = "10"
Dim d2 As String
testCompute = "s = '10', d = null, r = s + d"
r = s + d2
TestLog_ASSERT r = 10, testCompute & " .The result is: " & r
testCompute = "s = '10', d = null, r = s & d"
r = s & d2
TestLog_ASSERT r = 10, testCompute & " .The result is: " & r
testCompute = "s = '10', d = 20, r = s + d"
d2 = "20"
r = s + d2
TestLog_ASSERT r = 1020, testCompute & " .The result is: " & r
testCompute = "s = '10', d = 20, r = s & d"
d2 = "20"
r = s & d2
TestLog_ASSERT r = 1020, testCompute & " .The result is: " & r
''''''''''''''
s = "abc"
Dim d3 As String
testCompute = "s = 'abc', d = null, r = s + d"
r = s + d3
TestLog_ASSERT r = -1, testCompute & " .The result is: " & r
testCompute = "s = 'abc', d = null, r = s & d"
r = s & d3
TestLog_ASSERT r = -1, testCompute & " .The result is: " & r
testCompute = "s = 'abc', d = 20, r = s + d"
d3 = "20"
r = s + d3
TestLog_ASSERT r = -1, testCompute & " .The result is: " & r
testCompute = "s = 'abc', d = 20, r = s & d"
d3 = "20"
r = s & d3
TestLog_ASSERT r = -1, testCompute & " .The result is: " & r
Exit Sub
ErrorHandler:
r = -1
' TestLog_Comment "The next compute raises error: " & testCompute
Resume Next
End Sub
Sub test2()
Dim s As String
Dim d As Double
s = ""
d = s ' fail in MSO
MsgBox d
End Sub
Sub testBolean()
Dim a As String
Dim b As Boolean
Dim c As Boolean
Dim d As String
b = True
a = "1"
c = a + b ' c = false
MsgBox c
d = a + b 'd = 0
MsgBox d
End Sub
Sub testCurrency()
Dim a As String
Dim b As Currency
Dim c As Currency
Dim d As String
a = "10"
b = 30.3
c = a + b ' c = 40.3
MsgBox c
d = a + b ' c =40.3
MsgBox d
End Sub
Sub TestLog_ASSERT(assertion As Boolean, Optional testId As String, Optional testComment As String)
If assertion = True Then
passCount = passCount + 1
Else
Dim testMsg As String
If Not IsMissing(testId) Then
testMsg = testMsg + " : " + testId
End If
If Not IsMissing(testComment) And Not (testComment = "") Then
testMsg = testMsg + " (" + testComment + ")"
End If
result = result & Chr$(10) & " Failed: " & testMsg
failCount = failCount + 1
End If
End Sub
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