/*
 * Copyright (C) 2026 - present Instructure, Inc.
 *
 * This file is part of Canvas.
 *
 * Canvas is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License as published by the Free
 * Software Foundation, version 3 of the License.
 *
 * Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Affero General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */

import {interpolate} from '../interpolate'

describe('interpolate', () => {
  it('returns the template unchanged when no values are given', () => {
    expect(interpolate('Remove {lang} closed captions')).toEqual('Remove {lang} closed captions')
  })

  it('substitutes a named placeholder', () => {
    expect(interpolate('Remove {lang} closed captions', {lang: 'French'})).toEqual(
      'Remove French closed captions',
    )
  })

  it('tolerates whitespace inside the braces', () => {
    expect(interpolate('Selected file: { name }', {name: 'caps.srt'})).toEqual(
      'Selected file: caps.srt',
    )
  })

  it('substitutes multiple occurrences of the same placeholder', () => {
    expect(interpolate('{lang} and {lang} again', {lang: 'French'})).toEqual(
      'French and French again',
    )
  })

  it('substitutes multiple distinct placeholders', () => {
    expect(
      interpolate('{captionName} caption upload failed for {lang}', {
        captionName: 'foo.vtt',
        lang: 'French',
      }),
    ).toEqual('foo.vtt caption upload failed for French')
  })

  it('leaves a placeholder untouched when its value is missing', () => {
    expect(interpolate('Remove {lang} closed captions', {})).toEqual(
      'Remove {lang} closed captions',
    )
  })

  it('coerces non-string values to strings', () => {
    expect(
      interpolate('The selected file exceeds the {maxSize} Byte limit', {maxSize: 500}),
    ).toEqual('The selected file exceeds the 500 Byte limit')
  })
})