PoshCode · Jaykul · Mar 1, 2020 · Feb 29, 2020 · Mar 1, 2020
diff --git a/Source/Private/GetBuildInfo.ps1 b/Source/Private/GetBuildInfo.ps1
@@ -77,16 +77,13 @@ function GetBuildInfo {
    }
    Write-Debug "Finished parsing Build Manifest $BuildManifest"

-    $BuildInfo = $BuildInfo | Update-Object $ParameterValues
-    Write-Debug "Using Module Manifest $($BuildInfo.SourcePath)"
-
    $BuildManifestParent = if ($BuildManifest) {
        Split-Path -Parent $BuildManifest
    } else {
        Get-Location -PSProvider FileSystem
    }

-    if (-Not $BuildInfo.SourcePath) {
+    if ((-not $BuildInfo.SourcePath) -and $ParameterValues["SourcePath"] -notmatch '\.psd1') {
        # Find a module manifest (or maybe several)
        $ModuleInfo = Get-ChildItem $BuildManifestParent -Recurse -Filter *.psd1 -ErrorAction SilentlyContinue |
            ImportModuleManifest -ErrorAction SilentlyContinue
@@ -102,13 +99,16 @@ function GetBuildInfo {
        }
        if (@($ModuleInfo).Count -eq 1) {
            Write-Debug "Updating BuildInfo SourcePath to $($ModuleInfo.Path)"
-            $BuildInfo = $BuildInfo | Update-Object @{ SourcePath = $ModuleInfo.Path }
+            $ParameterValues["SourcePath"] = $ModuleInfo.Path
        }
-        if (-Not $BuildInfo.SourcePath) {
+        if (-Not $ModuleInfo) {
            throw "Can't find a module manifest in $BuildManifestParent"
        }
    }

+    $BuildInfo = $BuildInfo | Update-Object $ParameterValues
+    Write-Debug "Using Module Manifest $($BuildInfo.SourcePath)"
+
    # Make sure the SourcePath is absolute and points at an actual file
    if (!(Split-Path -IsAbsolute $BuildInfo.SourcePath) -and $BuildManifestParent) {
        $BuildInfo.SourcePath = Join-Path $BuildManifestParent $BuildInfo.SourcePath | Convert-Path

diff --git a/Tests/Integration/Source1.Tests.ps1 b/Tests/Integration/Source1.Tests.ps1
@@ -88,7 +88,14 @@ Describe "Regression test for #84: Multiple Aliases per command will Export" -Ta
 }

 Describe "Supports building without a build.psd1" -Tag Integration {
-    Copy-Item  $PSScriptRoot\Source1 TestDrive:\Source1 -Recurse
+    Copy-Item $PSScriptRoot\Source1 TestDrive:\Source1 -Recurse
+    # This is the old build, with a build.psd1
+    $Output = Build-Module TestDrive:\Source1\build.psd1 -Passthru
+    $ManifestContent = Get-Content $Output.Path
+    $ModuleContent = Get-Content ([IO.Path]::ChangeExtension($Output.Path, ".psm1"))
+    Remove-Item (Split-Path $Output.Path) -Recurse
+
+    # Then remove the build.psd1 and rebuild it
    Remove-Item TestDrive:\Source1\build.psd1

    $Build = @{ }
@@ -105,6 +112,8 @@ Describe "Supports building without a build.psd1" -Tag Integration {

    It "Creates the same module as with a build.psd1" {
        $Build.Metadata = Import-Metadata $Build.Output.Path
+        Get-Content $Build.Output.Path | Should -Be $ManifestContent
+        Get-Content ([IO.Path]::ChangeExtension($Build.Output.Path, ".psm1")) | Should -Be $ModuleContent
    }

    It "Should update AliasesToExport in the manifest" {
@@ -115,6 +124,42 @@ Describe "Supports building without a build.psd1" -Tag Integration {
        $Build.Metadata.FunctionsToExport | Should -Be @("Get-Source", "Set-Source")
    }
 }
+Describe "Supports building discovering the module without a build.psd1" -Tag Integration {
+    Copy-Item $PSScriptRoot\Source1 TestDrive:\source -Recurse
+
+    # This is the old build, with a build.psd1
+    $Output = Build-Module TestDrive:\source\build.psd1 -Passthru
+    $ManifestContent = Get-Content $Output.Path
+    $ModuleContent = Get-Content ([IO.Path]::ChangeExtension($Output.Path, ".psm1"))
+    Remove-Item (Split-Path $Output.Path) -Recurse
+
+    # Then remove the build.psd1 and rebuild it
+    Remove-Item TestDrive:\source\build.psd1
+
+    Push-Location -StackName 'IntegrationTest' -Path TestDrive:\
+
+    $Build = @{ }
+
+    It "No longer fails if there's no build.psd1" {
+        $Build.Output = Build-Module -Passthru
+    }
+
+    It "Creates the same module as with a build.psd1" {
+        $Build.Metadata = Import-Metadata $Build.Output.Path
+        Get-Content $Build.Output.Path | Should -Be $ManifestContent
+        Get-Content ([IO.Path]::ChangeExtension($Build.Output.Path, ".psm1")) | Should -Be $ModuleContent
+    }
+
+    It "Should update AliasesToExport in the manifest" {
+        $Build.Metadata.AliasesToExport | Should -Be @("GS", "GSou", "SS", "SSou")
+    }
+
+    It "Should update FunctionsToExport in the manifest" {
+        $Build.Metadata.FunctionsToExport | Should -Be @("Get-Source", "Set-Source")
+    }
+
+    Pop-Location -StackName 'IntegrationTest'
+}

 Describe "Regression test for #88 not copying prefix files" -Tag Integration, Regression {
    $Output = Build-Module $PSScriptRoot\build.psd1 -Passthru