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parenthesis.spec.ts
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63 lines (57 loc) · 1.79 KB
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import * as util from "../../util";
test("binary expression with 'as' type assertion wrapped in parenthesis", () => {
util.testFunction("return 2 * (3 - 2 as number);").expectToMatchJsResult();
});
test.each([
"(x as any).foo;",
"(y.x as any).foo;",
"(y['x'] as any).foo;",
"(z() as any).foo;",
"(y.z() as any).foo;",
"(<any>x).foo;",
"(<any>y.x).foo;",
"(<any>y['x']).foo;",
"(<any>z()).foo;",
"(<any>y.z()).foo;",
"(x as unknown as any).foo;",
"(<unknown>x as any).foo;",
"((x as unknown) as any).foo;",
"((<unknown>x) as any).foo;",
])("'as' type assertion should strip parenthesis (%p)", expression => {
const code = `
declare let x: unknown;
declare let y: { x: unknown; z(this: void): unknown; };
declare function z(this: void): unknown;
${expression}`;
const lua = util.testExpression(code).getMainLuaCodeChunk();
expect(lua).not.toMatch(/\(.+\)/);
});
test.each([
"(x + 1 as any).foo;",
"(!x as any).foo;",
"(x ** 2 as any).foo;",
"(x < 2 as any).foo;",
"(x in y as any).foo;",
"(<any>x + 1).foo;",
"(<any>!x).foo;",
"(x + 1 as unknown as any).foo;",
"((x + 1 as unknown) as any).foo;",
"(!x as unknown as any).foo;",
"((!x as unknown) as any).foo;",
"(<unknown>!x as any).foo;",
"((<unknown>!x) as any).foo;",
])("'as' type assertion should not strip parenthesis (%p)", expression => {
const code = `
declare let x: number;
declare let y: {};
${expression}`;
const lua = util.testExpression(code).getMainLuaCodeChunk();
expect(lua).toMatch(/\(.+\)/);
});
test("not operator precedence (%p)", () => {
util.testFunction`
const a = true;
const b = false;
return !a && b;
`.expectToMatchJsResult();
});