diff --git a/src/Helper/Resolve-Dependency.ps1 b/src/Helper/Resolve-Dependency.ps1
index 1687275..59cfc5f 100644
--- a/src/Helper/Resolve-Dependency.ps1
+++ b/src/Helper/Resolve-Dependency.ps1
@@ -53,11 +53,12 @@ function Resolve-Dependency {
     [CmdletBinding()]
     param (
         [Parameter(Mandatory = $true)]
+        [ValidateNotNullOrEmpty()]
         [string]$Name
     )
 
     begin {
-        $ModuleRootDir = $MyInvocation.MyCommand.Module.ModuleBase
+        $ModuleRootDir = Get-ModuleBase
         $DepFilePath = Join-Path -Path $ModuleRootDir -ChildPath "Dependency.json"
         if (Test-Path -Path $DepFilePath) {
             $Dependency = Get-Content -Path $DepFilePath -Raw -Encoding UTF8 | ConvertFrom-Json
diff --git a/tests/Helper/01_Resolve-Dependendy.Tests.ps1 b/tests/Helper/01_Resolve-Dependendy.Tests.ps1
new file mode 100644
index 0000000..013c65b
--- /dev/null
+++ b/tests/Helper/01_Resolve-Dependendy.Tests.ps1
@@ -0,0 +1,31 @@
+#region HEADER
+$here = Split-Path -Parent $MyInvocation.MyCommand.Path
+# $RepoRoot = (Get-Item -Path $here).Parent.Parent.FullName
+$RepoRoot = (Get-GitDirectory).replace('\.git', '')
+$sut = (Split-Path -Leaf $MyInvocation.MyCommand.Path) -replace '\.Tests\.', '.'
+$sut = $sut -replace "\d{2}`_", ''
+$suthome = (Get-ChildItem -Path $RepoRoot -Exclude ".\tests\" -Filter $sut -Recurse).FullName
+# Skip try loading the source file if it doesn't exists.
+If ($suthome.Length -gt 0) {
+    . $suthome
+}
+Else {
+    Write-Warning ("Could not find source file {0}" -f $sut)
+}
+
+# load additional functions defined in the repository. Replace the expression <FunctionName>.
+#. (Get-ChildItem -Path $RepoRoot -Filter "<FunctionName>.ps1" -Recurse).FullName
+#endregion HEADER
+
+Describe "Resolve-Dependency" {
+    Context "Basic syntax check" {
+        Mock Get-ModuleBase {return "{0}\resources" -f $PWD}
+        Mock Test-Module {return $true}
+        It "Test1: Should not throw" {
+            { Resolve-Dependency -Name 'foobar2000' } | Should -Not -Throw
+        }
+        It "Test2: Output type should be bool" {
+            Resolve-Dependency -Name 'foobar2000' | Should -BeOfType system.bool
+        }
+    }
+}