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Copy pathtypeof.spec.ts
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76 lines (65 loc) · 3.54 KB
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import * as util from "../util";
test.each(["0", "30", "30_000", "30.00"])("typeof number (%p)", inp => {
util.testExpression`typeof ${inp}`.expectToMatchJsResult();
});
test.each(['"abc"', "`abc`"])("typeof string (%p)", inp => {
util.testExpression`typeof ${inp}`.expectToMatchJsResult();
});
test.each(["false", "true"])("typeof boolean (%p)", inp => {
util.testExpression`typeof ${inp}`.expectToMatchJsResult();
});
test.each(["{}", "[]"])("typeof object literal (%p)", inp => {
util.testExpression`typeof ${inp}`.expectToMatchJsResult();
});
test("typeof class instance", () => {
util.testFunction`
class myClass {}
let inst = new myClass();
return typeof inst;
`.expectToMatchJsResult();
});
test("typeof function", () => {
util.testExpression`typeof (() => 3)`.expectToMatchJsResult();
});
test.each(["null", "undefined"])("typeof undefined (%p)", inp => {
util.testExpression`typeof ${inp}`.expectToEqual("undefined");
});
test.each([
{ expression: "{}", operator: "===", compareTo: "object", expectResult: true },
{ expression: "{}", operator: "!==", compareTo: "object", expectResult: false },
{ expression: "{}", operator: "==", compareTo: "object", expectResult: true },
{ expression: "{}", operator: "!=", compareTo: "object", expectResult: false },
{ expression: "{}", operator: "<=", compareTo: "object", expectResult: true },
{ expression: "{}", operator: "<", compareTo: "object", expectResult: false },
{ expression: "undefined", operator: "===", compareTo: "undefined", expectResult: true },
{ expression: "() => {}", operator: "===", compareTo: "function", expectResult: true },
{ expression: "1", operator: "===", compareTo: "number", expectResult: true },
{ expression: "true", operator: "===", compareTo: "boolean", expectResult: true },
{ expression: `"foo"`, operator: "===", compareTo: "string", expectResult: true },
])("typeof literal comparison (%p)", ({ expression, operator, compareTo, expectResult }) => {
const code = `
let val = ${expression};
return typeof val ${operator} "${compareTo}";`;
expect(util.transpileString(code)).not.toMatch("__TS__TypeOf");
expect(util.transpileAndExecute(code)).toBe(expectResult);
});
test.each([
{ expression: "{}", operator: "===", compareTo: "object", expectResult: true },
{ expression: "{}", operator: "!==", compareTo: "object", expectResult: false },
{ expression: "{}", operator: "==", compareTo: "object", expectResult: true },
{ expression: "{}", operator: "!=", compareTo: "object", expectResult: false },
{ expression: "{}", operator: "<=", compareTo: "object", expectResult: true },
{ expression: "{}", operator: "<", compareTo: "object", expectResult: false },
{ expression: "undefined", operator: "===", compareTo: "undefined", expectResult: true },
{ expression: "() => {}", operator: "===", compareTo: "function", expectResult: true },
{ expression: "1", operator: "===", compareTo: "number", expectResult: true },
{ expression: "true", operator: "===", compareTo: "boolean", expectResult: true },
{ expression: `"foo"`, operator: "===", compareTo: "string", expectResult: true },
])("typeof non-literal comparison (%p)", ({ expression, operator, compareTo, expectResult }) => {
const code = `
let val = ${expression};
let compareTo = "${compareTo}";
return typeof val ${operator} compareTo;`;
expect(util.transpileString(code)).toMatch("__TS__TypeOf");
expect(util.transpileAndExecute(code)).toBe(expectResult);
});