apollo-codegen/test/valueFromValueNode.ts

import { parseValue } from 'graphql';

import { valueFromValueNode } from '../src/utilities/graphql';

describe('#valueFromValueNode', () => {
  test(`should return a number for an IntValue`, () => {
    const valueNode = parseValue('1');
    const value = valueFromValueNode(valueNode);

    expect(value).toBe(1);
  });

  test(`should return a number for a FloatValue`, () => {
    const valueNode = parseValue('1.0');
    const value = valueFromValueNode(valueNode);

    expect(value).toBe(1.0);
  });

  test(`should return a boolean for a BooleanValue`, () => {
    const valueNode = parseValue('true');
    const value = valueFromValueNode(valueNode);

    expect(value).toBe(true);
  });

  test(`should return null for a NullValue`, () => {
    const valueNode = parseValue('null');
    const value = valueFromValueNode(valueNode);

    expect(value).toBe(null);
  });

  test(`should return a string for a StringValue`, () => {
    const valueNode = parseValue('"foo"');
    const value = valueFromValueNode(valueNode);

    expect(value).toBe('foo');
  });

  test(`should return a string for an EnumValue`, () => {
    const valueNode = parseValue('JEDI');
    const value = valueFromValueNode(valueNode);

    expect(value).toBe('JEDI');
  });

  test(`should return an object for a Variable`, () => {
    const valueNode = parseValue('$something');
    const value = valueFromValueNode(valueNode);

    expect(value).toEqual({ kind: 'Variable', variableName: 'something' });
  });

  test(`should return an array for a ListValue`, () => {
    const valueNode = parseValue('[ "foo", 1, JEDI, $something ]');
    const value = valueFromValueNode(valueNode);

    expect(value).toEqual(['foo', 1, 'JEDI', { kind: 'Variable', variableName: 'something' }]);
  });

  test(`should return an object for an ObjectValue`, () => {
    const valueNode = parseValue('{ foo: "foo", bar: 1, bla: JEDI, baz: $something }');
    const value = valueFromValueNode(valueNode);

    expect(value).toEqual({
      foo: 'foo',
      bar: 1,
      bla: 'JEDI',
      baz: { kind: 'Variable', variableName: 'something' }
    });
  });
});