vendor tsgo

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

@@ -0,0 +1,55 @@
+package fourslash_test
+
+import (
+	"testing"
+
+	"github.com/microsoft/typescript-go/internal/fourslash"
+	"github.com/microsoft/typescript-go/internal/testutil"
+)
+
+// Test that requesting completions after a keyword in an import statement
+// doesn't crash with a nil pointer dereference.
+// Reproduces issue: import super/*cursor*/
+// Before the fix, this would panic with: runtime error: invalid memory address or nil pointer dereference
+func TestCompletionImportKeywordNoCrash(t *testing.T) {
+	t.Parallel()
+	defer testutil.RecoverAndFail(t, "Panic on fourslash test")
+
+	emptyCommitChars := []string{}
+
+	// Test with "super" keyword
+	{
+		const content = `import super/*1*/`
+		f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
+		f.VerifyCompletions(t, "1", &fourslash.CompletionsExpectedList{
+			IsIncomplete: false,
+			ItemDefaults: &fourslash.CompletionsExpectedItemDefaults{
+				CommitCharacters: &emptyCommitChars,
+			},
+			Items: &fourslash.CompletionsExpectedItems{
+				Includes: []fourslash.CompletionsExpectedItem{
+					"type",
+				},
+			},
+		})
+		done()
+	}
+
+	// Test with "this" keyword
+	{
+		const content = `import this/*1*/`
+		f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
+		f.VerifyCompletions(t, "1", &fourslash.CompletionsExpectedList{
+			IsIncomplete: false,
+			ItemDefaults: &fourslash.CompletionsExpectedItemDefaults{
+				CommitCharacters: &emptyCommitChars,
+			},
+			Items: &fourslash.CompletionsExpectedItems{
+				Includes: []fourslash.CompletionsExpectedItem{
+					"type",
+				},
+			},
+		})
+		done()
+	}
+}