vendor tsgo

tools/tsgo/internal/fourslash/tests/completionResolveAfterEdit_test.go

@@ -0,0 +1,45 @@
+package fourslash_test
+
+import (
+	"testing"
+
+	"github.com/microsoft/typescript-go/internal/fourslash"
+	"github.com/microsoft/typescript-go/internal/testutil"
+)
+
+func TestCompletionResolveAfterEdit(t *testing.T) {
+	t.Parallel()
+	defer testutil.RecoverAndFail(t, "Panic on fourslash test")
+	const content = `
+// @filename: /index.ts
+interface Point {
+	x: number;
+	y: number;
+}
+declare const p: Point;
+/*a*/
+
+// @filename: /foo.ts
+/*b*/
+`
+	f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
+	defer done()
+
+	// Step 1: Get completions at the marker.
+	f.GoToMarker(t, "a")
+	completions := f.GetCompletions(t, nil /*userPreferences*/)
+	if completions == nil || len(completions.Items) == 0 {
+		t.Fatal("Expected completions but got none")
+	}
+	firstItem := completions.Items[0]
+
+	// Step 2: Make a file change (insert a comment after marker).
+	f.GoToMarker(t, "b")
+	f.Insert(t, "1")
+
+	// Step 3: Resolve the first completion item from the original list.
+	resolved := f.ResolveCompletionItem(t, firstItem)
+	if resolved == nil {
+		t.Fatal("Expected resolved completion item but got nil")
+	}
+}