ad1798ed48
* Only bundle the release build, and don't import `src` in tests * Use file extension to signal skipping * Remove unnecessary config change * Fix imports
109 lines
3.2 KiB
JavaScript
109 lines
3.2 KiB
JavaScript
import { parseSync, traverse } from "@babel/core";
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import { shouldTransform } from "../lib/util.js";
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function getPath(input, parserOpts = {}) {
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let targetPath;
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traverse(
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parseSync(input, {
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parserOpts,
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filename: "example.js",
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configFile: false,
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}),
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{
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"OptionalMemberExpression|OptionalCallExpression"(path) {
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targetPath = path;
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path.stop();
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},
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noScope: true,
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},
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);
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return targetPath;
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}
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describe("shouldTransform", () => {
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const positiveCases = [
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"fn?.(...[], 0)",
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"fn?.(...[], ...[])",
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"fn?.(0, ...[], ...[])",
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"a?.b(...[], 0)",
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"a?.[b](...[], 0)",
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"a?.b?.(...[], 0)",
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"fn?.(0, ...[], 0)",
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"a?.b?.(0, ...[], 0)",
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"(a?.b)?.(...[], 0)",
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"a?.b.c?.(...[], 0)",
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"class C { #c; p = obj?.#c(...[], 0) }",
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"class C { #c; p = obj.#c?.(...[], 0) }",
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];
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const negativeCases = [
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"a?.b",
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"fn?.(1)",
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"fn?.(...[])",
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"fn?.(1, ...[])",
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"a?.b(...[])",
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"a?.()(...[], 1)", // optional call under optional call is not affected
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"(a?.b)(...[], 1)", // not an optional call
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"a?.b.c(...[], 1)",
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"a?.[fn?.(...[], 0)]", // optional chain in property will be handled when traversed
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"a?.(fn?.(...[], 0))", // optional chain in arguments will be handled when traversed
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"class C { #c; p = obj?.#c(...[]) }",
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];
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const typescriptPositiveCases = [
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"(a?.(...[], 0) as any)?.b",
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"(a?.(...[], 0) as any)?.()",
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];
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const typescriptNegativeCases = ["(a?.b as any)(...[], 0)"];
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describe("default parser options", () => {
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test.each(positiveCases)(
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"shouldTransform(a?.b in %p) should return true",
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input => {
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expect(shouldTransform(getPath(input))).toBe(true);
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},
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);
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test.each(negativeCases)(
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"shouldTransform(a?.b in %p) should return false",
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input => {
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expect(shouldTransform(getPath(input))).toBe(false);
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},
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);
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});
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describe("createParenthesizedExpressions", () => {
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test.each(positiveCases)(
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"shouldTransform(a?.b in %p with { createParenthesizedExpressions: true }) should return true",
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input => {
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const parserOpts = { createParenthesizedExpressions: true };
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expect(shouldTransform(getPath(input, parserOpts))).toBe(true);
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},
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);
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test.each(negativeCases)(
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"shouldTransform(a?.b in %p with { createParenthesizedExpressions: true }) should return false",
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input => {
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const parserOpts = { createParenthesizedExpressions: true };
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expect(shouldTransform(getPath(input, parserOpts))).toBe(false);
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},
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);
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});
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describe("plugins: [typescript]", () => {
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test.each(positiveCases.concat(typescriptPositiveCases))(
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"shouldTransform(a?.b in %p with { plugins: [typescript] }) should return true",
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input => {
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const parserOpts = { plugins: ["typescript"] };
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expect(shouldTransform(getPath(input, parserOpts))).toBe(true);
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},
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);
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test.each(negativeCases.concat(typescriptNegativeCases))(
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"shouldTransform(a?.b in %p with { plugins: [typescript] }) should return false",
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input => {
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const parserOpts = { plugins: ["typescript"] };
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expect(shouldTransform(getPath(input, parserOpts))).toBe(false);
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},
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);
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});
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});
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