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import { transpileString } from "./utils";
describe("transpiling basic types", () => {
it.each([
["export type T = boolean;", "T = bool"],
["export type T = number;", "T = float"],
["export type T = string;", "T = str"],
["export type T = undefined;", "T = None"],
["export type T = void;", "T = None"],
["export type T = null;", "T = None"],
[
"export type T = true;",
"from typing_extensions import Literal\n\nT = Literal[True]",
],
[
"export type T = false;",
"from typing_extensions import Literal\n\nT = Literal[False]",
],
[
"export type T = 42;",
"from typing_extensions import Literal\n\nT = Literal[42]",
],
[
"export type T = 'foo';",
'from typing_extensions import Literal\n\nT = Literal["foo"]',
],
[
"export type T = {[key: string]: boolean};",
"from typing_extensions import Dict\n\nT = Dict[str,bool]",
],
[
"export type T = {[key: string]: number};",
"from typing_extensions import Dict\n\nT = Dict[str,float]",
],
[
"export type T = [string, number]",
"from typing_extensions import Tuple\n\nT = Tuple[str,float]",
],
[
"export type T = number[]",
"from typing_extensions import List\n\nT = List[float]",
],
["export type T = any;", "from typing_extensions import Any\n\nT = Any"],
[
"export type T = unknown;",
"from typing_extensions import Any\n\nT = Any",
],
[
"export type T = {[key: string]: {[key: string]: number}};",
"from typing_extensions import Dict\n\nT = Dict[str,Dict[str,float]]",
],
[
"export type T = Record<string, number>;",
"from typing_extensions import Dict\n\nT = Dict[str,float]",
],
[
"export type T = number | string | Record<string, boolean>",
"from typing_extensions import Dict, Union\n\nT = Union[str,float,Dict[str,bool]]",
],
[
"export type T = number | undefined",
// without strict mode the `undefined` gets lost here
"T = float",
],
])("transpiles %p to %p", async (input, expected) => {
const result = await transpileString(input);
expect(result).toEqual(expected);
});
it.each([
[
"export type T = number | undefined",
"from typing_extensions import Union\n\nT = Union[None,float]",
],
[
"export type T = number | null",
"from typing_extensions import Union\n\nT = Union[None,float]",
],
])("transpiles %p to %p when strict", async (input, expected) => {
const result = await transpileString(input, {}, { strict: true });
expect(result).toEqual(expected);
});
it("only transpiles exported types", async () => {
const result = await transpileString(`
type NotExported = number;
const notExported: NotExported = 42;
export type Exported = number;
export const exported: Exported = 42;
`);
expect(result).not.toContain("NotExported");
expect(result).not.toContain("exported");
expect(result).toContain("Exported = float");
});
});