vendor tsgo

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

@@ -0,0 +1,168 @@
+package fourslash_test
+
+import (
+	"testing"
+
+	"github.com/microsoft/typescript-go/internal/core"
+	"github.com/microsoft/typescript-go/internal/fourslash"
+	. "github.com/microsoft/typescript-go/internal/fourslash/tests/util"
+	"github.com/microsoft/typescript-go/internal/ls/lsutil"
+	"github.com/microsoft/typescript-go/internal/modulespecifiers"
+	"github.com/microsoft/typescript-go/internal/testutil"
+)
+
+func TestImportModuleSpecifierPreferenceShortest(t *testing.T) {
+	t.Parallel()
+	defer testutil.RecoverAndFail(t, "Panic on fourslash test")
+	const content = `// @Filename: /project/src/utils/helper.ts
+export const helperFunc = () => {};
+// @Filename: /project/src/index.ts
+helper/**/`
+
+	f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
+	defer done()
+	f.Configure(t, lsutil.UserPreferences{
+		IncludeCompletionsForModuleExports:    core.TSTrue,
+		IncludeCompletionsForImportStatements: core.TSTrue,
+		ImportModuleSpecifierPreference:       modulespecifiers.ImportModuleSpecifierPreferenceShortest,
+	})
+	f.VerifyCompletions(t, "", &fourslash.CompletionsExpectedList{
+		ItemDefaults: &fourslash.CompletionsExpectedItemDefaults{
+			CommitCharacters: &DefaultCommitCharacters,
+			EditRange:        Ignored,
+		},
+		Items: &fourslash.CompletionsExpectedItems{
+			Includes: []fourslash.CompletionsExpectedItem{"helperFunc"},
+		},
+	})
+	f.BaselineAutoImportsCompletions(t, []string{""})
+}
+
+func TestImportModuleSpecifierPreferenceProjectRelative(t *testing.T) {
+	t.Parallel()
+	defer testutil.RecoverAndFail(t, "Panic on fourslash test")
+	const content = `// @Filename: /project/src/utils/helper.ts
+export const helperFunc = () => {};
+// @Filename: /project/tests/index.ts
+helper/**/`
+
+	f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
+	defer done()
+	f.Configure(t, lsutil.UserPreferences{
+		IncludeCompletionsForModuleExports:    core.TSTrue,
+		IncludeCompletionsForImportStatements: core.TSTrue,
+		ImportModuleSpecifierPreference:       modulespecifiers.ImportModuleSpecifierPreferenceProjectRelative,
+	})
+	f.VerifyCompletions(t, "", &fourslash.CompletionsExpectedList{
+		ItemDefaults: &fourslash.CompletionsExpectedItemDefaults{
+			CommitCharacters: &DefaultCommitCharacters,
+			EditRange:        Ignored,
+		},
+		Items: &fourslash.CompletionsExpectedItems{
+			Includes: []fourslash.CompletionsExpectedItem{"helperFunc"},
+		},
+	})
+	f.BaselineAutoImportsCompletions(t, []string{""})
+}
+
+func TestImportModuleSpecifierPreferenceRelative(t *testing.T) {
+	t.Parallel()
+	defer testutil.RecoverAndFail(t, "Panic on fourslash test")
+	const content = `// @Filename: /project/src/utils/helper.ts
+export const helperFunc = () => {};
+// @Filename: /project/src/index.ts
+helper/**/`
+
+	f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
+	defer done()
+	f.Configure(t, lsutil.UserPreferences{
+		IncludeCompletionsForModuleExports:    core.TSTrue,
+		IncludeCompletionsForImportStatements: core.TSTrue,
+		ImportModuleSpecifierPreference:       modulespecifiers.ImportModuleSpecifierPreferenceRelative,
+	})
+	f.VerifyCompletions(t, "", &fourslash.CompletionsExpectedList{
+		ItemDefaults: &fourslash.CompletionsExpectedItemDefaults{
+			CommitCharacters: &DefaultCommitCharacters,
+			EditRange:        Ignored,
+		},
+		Items: &fourslash.CompletionsExpectedItems{
+			Includes: []fourslash.CompletionsExpectedItem{"helperFunc"},
+		},
+	})
+	f.BaselineAutoImportsCompletions(t, []string{""})
+}
+
+func TestImportModuleSpecifierPreferenceProjectRelativeWithPaths(t *testing.T) {
+	t.Parallel()
+	defer testutil.RecoverAndFail(t, "Panic on fourslash test")
+	// Regression test: when `paths` aliases are configured but the import target
+	// lives in the same package as the importing file, `project-relative` must
+	// prefer the relative path rather than fall back to the `paths` alias.
+	const content = `// @Filename: /project/tsconfig.json
+{
+  "compilerOptions": {
+    "paths": {
+      "@app/*": ["./src/app/*"],
+      "@utils/*": ["./src/utils/*"],
+    }
+  }
+}
+// @Filename: /project/src/utils/helper.ts
+export const helperFunc = () => {};
+// @Filename: /project/src/app/index.ts
+helper/**/`
+
+	f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
+	defer done()
+	f.Configure(t, lsutil.UserPreferences{
+		IncludeCompletionsForModuleExports:    core.TSTrue,
+		IncludeCompletionsForImportStatements: core.TSTrue,
+		ImportModuleSpecifierPreference:       modulespecifiers.ImportModuleSpecifierPreferenceProjectRelative,
+	})
+	f.VerifyCompletions(t, "", &fourslash.CompletionsExpectedList{
+		ItemDefaults: &fourslash.CompletionsExpectedItemDefaults{
+			CommitCharacters: &DefaultCommitCharacters,
+			EditRange:        Ignored,
+		},
+		Items: &fourslash.CompletionsExpectedItems{
+			Includes: []fourslash.CompletionsExpectedItem{"helperFunc"},
+		},
+	})
+	f.BaselineAutoImportsCompletions(t, []string{""})
+}
+
+func TestImportModuleSpecifierPreferenceNonRelative(t *testing.T) {
+	t.Parallel()
+	defer testutil.RecoverAndFail(t, "Panic on fourslash test")
+	const content = `// @Filename: /project/tsconfig.json
+{
+  "compilerOptions": {
+    "paths": {
+      "@app/*": ["./src/app/*"],
+      "@utils/*": ["./src/utils/*"],
+    }
+  }
+}
+// @Filename: /project/src/utils/helper.ts
+export const helperFunc = () => {};
+// @Filename: /project/src/app/index.ts
+helper/**/`
+
+	f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
+	defer done()
+	f.Configure(t, lsutil.UserPreferences{
+		IncludeCompletionsForModuleExports:    core.TSTrue,
+		IncludeCompletionsForImportStatements: core.TSTrue,
+		ImportModuleSpecifierPreference:       modulespecifiers.ImportModuleSpecifierPreferenceNonRelative,
+	})
+	f.VerifyCompletions(t, "", &fourslash.CompletionsExpectedList{
+		ItemDefaults: &fourslash.CompletionsExpectedItemDefaults{
+			CommitCharacters: &DefaultCommitCharacters,
+			EditRange:        Ignored,
+		},
+		Items: &fourslash.CompletionsExpectedItems{
+			Includes: []fourslash.CompletionsExpectedItem{"helperFunc"},
+		},
+	})
+	f.BaselineAutoImportsCompletions(t, []string{""})
+}