Run tests on macOS and Windows (#49)

Signed-off-by: knqyf263 <knqyf263@gmail.com>

.github/workflows/test.yml

@@ -1,18 +1,33 @@
-on: [push, pull_request]
 name: Test
+
+on:
+  push:
+    branches: 
+      - main
+  pull_request:
+
 jobs:
   test:
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        include:
+          - os: windows-latest
+            shell: bash
+          - os: macos-latest
+            shell: bash
+
+    runs-on: ${{ matrix.os }}
+
     steps:
-    - name: Install Go
-      uses: actions/setup-go@v3
+    - name: Check out code
+      uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v4
       with:
-        go-version: 1.18
-    - name: Checkout code
-      uses: actions/checkout@v3
-    - name: golangci-lint
-      uses: golangci/golangci-lint-action@v3
-      with:
-        version: v1.46
+        go-version-file: go.mod
+
     - name: Test
-      run: go test ./...
+      run: |
+        go test -v ./...

pkg/package.go

@@ -5,7 +5,7 @@ import (
 	"encoding/binary"
 	"encoding/hex"
 	"fmt"
-	"path/filepath"
+	"path"
 	"strings"
 	"time"
 
@@ -401,7 +401,7 @@ func (p *PackageInfo) InstalledFileNames() ([]string, error) {
 	var filePaths []string
 	for i, baseName := range p.BaseNames {
 		dir := p.DirNames[p.DirIndexes[i]]
-		filePaths = append(filePaths, filepath.Join(dir, baseName))
+		filePaths = append(filePaths, path.Join(dir, baseName)) // should be slash-separated
 	}
 	return filePaths, nil
 }