tests/_normalizeDict.Tests.ps1
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Import-Module Pester Import-Module './Get-DataHash.psm1' Describe "DataHash::_NormalizeDict" { It "Returns empty hashtable for empty input" { $DataHash = [DataHash]::New() $result = $DataHash._NormalizeDict(@{}) ($result | ConvertTo-Json) | Should -BeExactly (@{} | ConvertTo-Json) } It "Preserves ordered dictionaries" { $DataHash = [DataHash]::New() $orderedDict = [ordered]@{ C = 1; A = 2; B = 3 } $result = $DataHash._NormalizeDict($orderedDict) # Construct expected OrderedDictionary $expected = [System.Collections.Specialized.OrderedDictionary]::new() $orderedDict.GetEnumerator() | ForEach-Object { $expected[$_.Key] = $_.Value } $result.Keys | Should -Be $expected.Keys $result.Values | Should -Be $expected.Values } It "Sorts unordered dictionaries" { $DataHash = [DataHash]::New() $unorderedDict = @{ Z = 1; X = 2; A = 3 } $result = $DataHash._NormalizeDict($unorderedDict) $expected = [System.Collections.Specialized.OrderedDictionary]::new() $unorderedDict.GetEnumerator() | ForEach-Object { $expected[$_.Key] = $_.Value } $result.Keys | Should -Be @('A', 'X', 'Z') $result.Values | Should -Be @( 3, 2, 1) } It "Ignores specified fields" { $DataHash = [DataHash]::New() $DataHash.IgnoreFields.Add('B') $testDict = @{ A = 1; B = 2; C = 3 } $result = $DataHash._NormalizeDict($testDict) $result.Keys | Should -BeExactly @('A', 'C') # "B" should be excluded } It "Handles circular references gracefully" { $DataHash = [DataHash]::New() $circularDict = @{ A = 1 } $circularDict["Self"] = $circularDict # Circular reference $result = $DataHash._NormalizeDict($circularDict) $result["Self"] | Should -BeExactly "[CIRCULAR_REF]" } It "Processes PSCustomObject properties as dictionary keys" { $DataHash = [DataHash]::New() $obj = [PSCustomObject]@{ Name = "John"; Age = 30 } $result = $DataHash._NormalizeDict($obj) $result.Keys | Should -BeExactly @('Age', 'Name') # Sorted property names $result["Age"] | Should -BeExactly 30 $result["Name"] | Should -BeExactly "John" } It "Ignores fields in PSCustomObject if specified" { $DataHash = [DataHash]::New() $DataHash.IgnoreFields.Add('Age') $obj = [PSCustomObject]@{ Name = "John"; Age = 30 } $result = $DataHash._NormalizeDict($obj) $result.Keys | Should -BeExactly @('Name') # "Age" should be excluded $result["Name"] | Should -BeExactly "John" } It "Normalizes nested dictionaries recursively" { $DataHash = [DataHash]::New() $nestedDict = @{ Outer = @{ Inner2 = 200 Inner1 = 100 } } $result = $DataHash._NormalizeDict($nestedDict) $result["Outer"].Keys | Should -BeExactly @("Inner1", "Inner2") # Sorted $result["Outer"]["Inner1"] | Should -BeExactly 100 $result["Outer"]["Inner2"] | Should -BeExactly 200 } It "Processes ordered nested dictionaries correctly" { $DataHash = [DataHash]::New() $nestedOrdered = [ordered]@{ Parent = [ordered]@{ Y = 20 X = 10 } } $result = $DataHash._NormalizeDict($nestedOrdered) $result["Parent"].Keys | Should -BeExactly @("Y", "X") # Order preserved $result["Parent"]["X"] | Should -BeExactly 10 $result["Parent"]["Y"] | Should -BeExactly 20 } It "Does not sort ordered dictionaries within unordered dictionaries" { $DataHash = [DataHash]::New() $dict = @{ OrderedPart = [ordered]@{ B = 2; A = 1 } } $result = $DataHash._NormalizeDict($dict) $result["OrderedPart"].Keys | Should -BeExactly @("B", "A") # Order preserved } It "Handles null values correctly" { $DataHash = [DataHash]::New() $testDict = @{ Key1 = $null } $result = $DataHash._NormalizeDict($testDict) $result["Key1"] | Should -BeExactly "[NULL]" } } |