Files
kjol/tools/tsgo/internal/fourslash/tests/goToSourceDefinitionDefaultExport_test.go
2026-07-09 16:50:43 -04:00

154 lines
6.5 KiB
Go

package fourslash_test
import (
"testing"
"github.com/microsoft/typescript-go/internal/fourslash"
"github.com/microsoft/typescript-go/internal/testutil"
)
func TestGoToSourceNamedAndDefaultExport(t *testing.T) {
t.Parallel()
defer testutil.RecoverAndFail(t, "Panic on fourslash test")
// findDeclarationNodesByName correctly finds both named exports and
// default-exported classes/functions via the AST visitor.
const content = `// @moduleResolution: bundler
// @Filename: /home/src/workspaces/project/node_modules/pkg/package.json
{ "name": "pkg", "main": "./index.js", "types": "./index.d.ts" }
// @Filename: /home/src/workspaces/project/node_modules/pkg/index.d.ts
export default class Widget {}
export declare function helper(): void;
// @Filename: /home/src/workspaces/project/node_modules/pkg/index.js
export default class /*targetWidget*/Widget {}
export function /*targetHelper*/helper() {}
// @Filename: /home/src/workspaces/project/index.ts
import /*importDefault*/Widget, { /*importHelper*/helper } from "pkg";
Widget;
helper();`
f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
defer done()
f.VerifyBaselineGoToSourceDefinition(t, "importDefault", "importHelper")
}
func TestGoToSourceDefaultImportNotFirstStatement(t *testing.T) {
t.Parallel()
defer testutil.RecoverAndFail(t, "Panic on fourslash test")
// Default import navigates to the actual export default declaration,
// not the first statement of the file, when the default export is not first.
const content = `// @moduleResolution: bundler
// @Filename: /home/src/workspaces/project/node_modules/pkg/package.json
{ "name": "pkg", "main": "./index.js", "types": "./index.d.ts" }
// @Filename: /home/src/workspaces/project/node_modules/pkg/index.d.ts
export declare const version: string;
export default class Widget {}
// @Filename: /home/src/workspaces/project/node_modules/pkg/index.js
export const version = "1.0";
export default class /*targetWidget*/Widget {}
// @Filename: /home/src/workspaces/project/index.ts
import /*importDefault*/Widget from "pkg";
Widget;`
f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
defer done()
f.VerifyBaselineGoToSourceDefinition(t, "importDefault")
}
func TestGoToSourceUnnamedDefaultExport(t *testing.T) {
t.Parallel()
defer testutil.RecoverAndFail(t, "Panic on fourslash test")
const content = `// @moduleResolution: bundler
// @Filename: /home/src/workspaces/project/node_modules/pkg/package.json
{ "name": "pkg", "main": "./index.js", "types": "./index.d.ts" }
// @Filename: /home/src/workspaces/project/node_modules/pkg/index.d.ts
export default function(): string;
// @Filename: /home/src/workspaces/project/node_modules/pkg/index.js
export default /*targetDefault*/function() { return "ok"; }
// @Filename: /home/src/workspaces/project/index.ts
import /*importDefault*/myFunc from "pkg";
myFunc/*usage*/();`
f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
defer done()
f.VerifyBaselineGoToSourceDefinition(t, "importDefault", "usage")
}
func TestGoToSourceEmptyNamesEntryFallback(t *testing.T) {
t.Parallel()
defer testutil.RecoverAndFail(t, "Panic on fourslash test")
// getCandidateSourceDeclarationNames returns empty names,
// so mapDeclarationToSourceDefinitions falls through to entry declarations.
const content = `// @moduleResolution: bundler
// @Filename: /home/src/workspaces/project/node_modules/pkg/package.json
{ "name": "pkg", "main": "./index.js", "types": "./index.d.ts" }
// @Filename: /home/src/workspaces/project/node_modules/pkg/index.d.ts
declare const _default: { run(): void };
export default _default;
// @Filename: /home/src/workspaces/project/node_modules/pkg/index.js
export default { run() {} };
// @Filename: /home/src/workspaces/project/index.ts
import /*defaultImport*/pkg from "pkg";
pkg.run();`
f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
defer done()
f.VerifyBaselineGoToSourceDefinition(t, "defaultImport")
}
func TestGoToSourceExportAssignmentDefault(t *testing.T) {
t.Parallel()
defer testutil.RecoverAndFail(t, "Panic on fourslash test")
// ExportAssignment/default path in findDeclarationNodesByName
// and getCandidateSourceDeclarationNames.
const content = `// @moduleResolution: bundler
// @Filename: /home/src/workspaces/project/node_modules/pkg/package.json
{ "name": "pkg", "main": "./index.js", "types": "./index.d.ts" }
// @Filename: /home/src/workspaces/project/node_modules/pkg/index.d.ts
declare const _default: { run(): void };
export default _default;
// @Filename: /home/src/workspaces/project/node_modules/pkg/index.js
/*target*/export default { run() {} };
// @Filename: /home/src/workspaces/project/index.ts
import pkg from "pkg";
pkg/*usage*/;`
f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
defer done()
f.VerifyBaselineGoToSourceDefinition(t, "usage")
}
func TestGoToSourceExportAssignment(t *testing.T) {
t.Parallel()
defer testutil.RecoverAndFail(t, "Panic on fourslash test")
// findDeclarationNodesByName finds export assignment (export = ...)
// when searching for "default".
const content = `// @moduleResolution: bundler
// @Filename: /home/src/workspaces/project/node_modules/legacy/package.json
{ "name": "legacy", "main": "./index.js", "types": "./index.d.ts" }
// @Filename: /home/src/workspaces/project/node_modules/legacy/index.d.ts
declare function legacyFn(): string;
export = legacyFn;
// @Filename: /home/src/workspaces/project/node_modules/legacy/index.js
function /*targetFn*/legacyFn() { return "ok"; }
module.exports = legacyFn;
// @Filename: /home/src/workspaces/project/index.ts
import /*importName*/legacyFn from "legacy";
legacyFn();`
f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
defer done()
f.VerifyBaselineGoToSourceDefinition(t, "importName")
}
func TestGoToSourceExportAssignmentExpression(t *testing.T) {
t.Parallel()
defer testutil.RecoverAndFail(t, "Panic on fourslash test")
const content = `// @moduleResolution: bundler
// @Filename: /home/src/workspaces/project/node_modules/pkg/package.json
{ "name": "pkg", "main": "./index.js", "types": "./index.d.ts" }
// @Filename: /home/src/workspaces/project/node_modules/pkg/index.d.ts
export default function createThing(): { value: number };
// @Filename: /home/src/workspaces/project/node_modules/pkg/index.js
export default function createThing() { return { value: 42 }; }
// @Filename: /home/src/workspaces/project/index.ts
import /*defaultName*/createThing from "pkg";
createThing/*callDefault*/();`
f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
defer done()
f.VerifyBaselineGoToSourceDefinition(t, "defaultName", "callDefault")
}