humpty/test/findReactApiChanges.test.js

Makes sure your changelogs mention your breaking changes

import findReactApiChanges from "../src/findReactApiChanges";
import {
  oldExport as oldExportPropChanged,
  newExport as newExportPropChanged
} from "./inputs/findReactApiChanges/propTypeChange";
import {
  oldExport as oldExportPropRemoved,
  newExport as newExportPropRemoved
} from "./inputs/findReactApiChanges/propRemoved";
import {
  oldExport as oldExportPropMadeRequired,
  newExport as newExportPropMadeRequired
} from "./inputs/findReactApiChanges/propMadeRequired";
import {
  oldExport as oldExportPropMadeOptional,
  newExport as newExportPropMadeOptional
} from "./inputs/findReactApiChanges/propMadeOptional";
import {
  PROP_TYPE_CHANGED,
  PROP_REMOVED,
  PROP_MADE_REQUIRED,
  PROP_MADE_OPTIONAL
} from "../src/changeTypes";

describe("findReactApiChanges()", () => {
  test("default output should be text", () => {
    expect(
      findReactApiChanges(oldExportPropChanged, newExportPropChanged)
    ).toEqual([
      {
        changeType: PROP_TYPE_CHANGED,
        newType: "number",
        oldType: "string",
        propName: "age"
      }
    ]);
  });
  test("prop removed", () => {
    expect(
      findReactApiChanges(oldExportPropRemoved, newExportPropRemoved)
    ).toEqual([
      {
        changeType: PROP_REMOVED,
        propName: "age"
      }
    ]);
  });
  test("prop made required", () => {
    expect(
      findReactApiChanges(oldExportPropMadeRequired, newExportPropMadeRequired)
    ).toEqual([
      {
        changeType: PROP_MADE_REQUIRED,
        propName: "age"
      }
    ]);
  });
  test("prop made optional", () => {
    expect(
      findReactApiChanges(oldExportPropMadeOptional, newExportPropMadeOptional)
    ).toEqual([
      {
        changeType: PROP_MADE_OPTIONAL,
        propName: "age"
      }
    ]);
  });
});