🩹 [Patch]: Add more tests (100% CodeCoverage) (#9)

## Description

- Add more tests

## Type of change

<!-- Use the check-boxes [x] on the options that are relevant. -->

- [ ] 📖 [Docs]
- [ ] 🪲 [Fix]
- [x] 🩹 [Patch]
- [ ] ⚠️ [Security fix]
- [ ] 🚀 [Feature]
- [ ] 🌟 [Breaking change]

## Checklist

<!-- Use the check-boxes [x] on the options that are relevant. -->

- [x] I have performed a self-review of my own code
- [x] I have commented my code, particularly in hard-to-understand areas

src/Store/public/Get-StoreConfig.ps1

@@ -21,13 +21,9 @@
 
     $value = Get-StoreVariable -Name $Name
 
-    if ($null -eq $value) {
+    if (($null -eq $value) -and ((Get-SecretInfo -Vault $script:Store.SecretVaultName).Name -contains $Name)) {
         $value = Get-Secret -Name $Name -AsPlainText -Vault $script:Store.SecretVaultName
     }
 
-    if ($null -eq $value) {
-        throw "Configuration value not found: $Name"
-    }
-
     $value
 }

src/Store/public/Set-StoreConfig.ps1

@@ -24,6 +24,7 @@
 
         # The value to set.
         [Parameter(Mandatory)]
+        [AllowNull()]
         [object] $Value
     )
 

tests/Store.Tests.ps1

@@ -5,7 +5,7 @@
             Write-Verbose (Get-Module -Name 'Store' -ListAvailable | Out-String) -Verbose
         }
         It 'The module should be importable' {
-            { Import-Module -Name 'Store' } | Should -Not -Throw
+            { Import-Module -Name 'Store' -Force -Verbose } | Should -Not -Throw
         }
     }
     Context 'Initialize-Store' {
@@ -15,6 +15,9 @@
         It 'Should be able to run' {
             { Initialize-Store -Name 'GitHub' } | Should -Not -Throw
         }
+        It 'Should be able to run multiple times without erroring out' {
+            { Initialize-Store -Name 'GitHub' } | Should -Not -Throw
+        }
     }
     Context 'Get-StoreConfig' {
         It 'Should be available' {
@@ -57,5 +60,10 @@
             $secret = Get-StoreConfig -Name 'Secret'
             $secret | Should -Be 'Something'
         }
+        It 'Should be able to remove a variable if set to $null' {
+            Set-StoreConfig -Name 'Something' -Value $null
+            $something = Get-StoreConfig -Name 'Something'
+            $something | Should -BeNullOrEmpty
+        }
     }
 }