wvlet.airspec.spi.JsObjectMatcher.scala Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of airspec_sjs1_3 Show documentation

AirSpec: A Functional Testing Framework for Scala

There is a newer version: 24.9.0

/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package wvlet.airspec.spi

import scala.scalajs.js

/**
  */
private[airspec] object JsObjectMatcher {

  import Asserts.*

  def matcher: PartialFunction[(Any, Any), TestResult] = { case (a: js.Object, b: js.Object) =>
    check(jsObjEquals(a, b))
  }

  def jsObjEquals(v1: js.Object, v2: js.Object): Boolean = {
    if (v1 == v2) {
      true
    } else if (v1 == null || v2 == null) {
      false
    } else {
      deepEqual(v1, v2)
    }
  }

  private def getValues(v: js.Object): js.Array[(String, Any)] = {
    js.Object.entries(v).sortBy(_._1).map(p => (p._1, p._2.asInstanceOf[js.Any]))
  }

  @inline
  private def deepEqual(v1: js.Object, v2: js.Object): Boolean = {
    val k1 = js.Object.keys(v1)
    val k2 = js.Object.keys(v2)

    if (k1.length != k2.length) {
      false
    } else if (k1.length == 0) {
      js.JSON.stringify(v1) == js.JSON.stringify(v2)
    } else {
      val values1 = getValues(v1)
      val values2 = getValues(v2)
      values1.zip(values2).forall {
        case ((k1, _), (k2, _)) if k1 != k2 => false
        case ((_, v1), (_, v2)) =>
          if (js.typeOf(v1.asInstanceOf[js.Any]) == "object" && js.typeOf(v2.asInstanceOf[js.Any]) == "object")
            jsObjEquals(v1.asInstanceOf[js.Object], v2.asInstanceOf[js.Object])
          else
            v1 == v2
      }
    }
  }
}