Support for multi path upload

.github/workflows/test.yml

@@ -75,6 +75,16 @@ jobs:
         name: 'GZip-Artifact'
         path: path/to/dir-3/
 
+    # Upload a directory that contains a file that will be uploaded with GZip
+    - name: 'Upload artifact #4'
+      uses: ./
+      with:
+        name: 'Multi-Path-Artifact'
+        path: |
+          path/to/dir-1/*
+          path/to/dir-[23]/*
+          !path/to/dir-3/*.txt
+
     # Verify artifacts. Switch to download-artifact@v2 once it's out of preview
 
     # Download Artifact #1 and verify the correctness of the content
@@ -138,3 +148,23 @@ jobs:
             Write-Error "File contents of downloaded artifact is incorrect"
         }
       shell: pwsh
+
+    - name: 'Download artifact #4'
+      uses: actions/download-artifact@v1
+      with:
+        name: 'Multi-Path-Artifact'
+        path: multi/artifact/path
+
+    - name: 'Verify Artifact #4'
+      run: |
+        $file1 = "multi/artifact/path/to/dir-1/file1.txt"
+        $file2 = "multi/artifact/path/to/dir-2/file2.txt"
+        if(!(Test-Path -path $file1) -or !(Test-Path -path $file2))
+        {
+            Write-Error "Expected files do not exist"
+        }
+        if(!((Get-Content $file1) -ceq "Lorem ipsum dolor sit amet") -or !((Get-Content $file2) -ceq "Hello world from file #2"))
+        {
+            Write-Error "File contents of downloaded artifacts are incorrect"
+        }
+      shell: pwsh