vendor tsgo

tools/tsgo/internal/vfs/osvfs/os_test.go

@@ -0,0 +1,67 @@
+package osvfs_test
+
+import (
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"testing"
+
+	"github.com/microsoft/typescript-go/internal/repo"
+	"github.com/microsoft/typescript-go/internal/tspath"
+	"github.com/microsoft/typescript-go/internal/vfs/osvfs"
+	"gotest.tools/v3/assert"
+)
+
+func TestOS(t *testing.T) {
+	t.Parallel()
+
+	fs := osvfs.FS()
+
+	t.Run("ReadFile", func(t *testing.T) {
+		t.Parallel()
+
+		goMod := filepath.Join(repo.RootPath(), "go.mod")
+		goModPath := tspath.NormalizePath(goMod)
+
+		expectedRaw, err := os.ReadFile(goMod)
+		assert.NilError(t, err)
+		expected := string(expectedRaw)
+
+		contents, ok := fs.ReadFile(goModPath)
+		assert.Assert(t, ok)
+		assert.Equal(t, contents, expected)
+	})
+
+	t.Run("Realpath", func(t *testing.T) {
+		t.Parallel()
+
+		home, err := os.UserHomeDir()
+		if err != nil {
+			t.Skip(err)
+		}
+		home = tspath.NormalizePath(home)
+
+		expected := home
+		if runtime.GOOS == "windows" {
+			// Windows drive letters can be lowercase, but realpath will always return uppercase.
+			expected = strings.ToUpper(expected[:1]) + expected[1:]
+		}
+		realpath := fs.Realpath(home)
+		assert.Equal(t, realpath, expected)
+	})
+
+	t.Run("UseCaseSensitiveFileNames", func(t *testing.T) {
+		t.Parallel()
+
+		// Just check that it works.
+		fs.UseCaseSensitiveFileNames()
+
+		switch runtime.GOOS {
+		case "windows":
+			assert.Assert(t, !fs.UseCaseSensitiveFileNames())
+		case "linux":
+			assert.Assert(t, fs.UseCaseSensitiveFileNames())
+		}
+	})
+}