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• ClickhouseMatchers.scala

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com.crobox.clickhouse.testkit.ClickhouseMatchers.scala Maven / Gradle / Ivy

package com.crobox.clickhouse.testkit

import org.scalatest.matchers.{MatchResult, Matcher}

trait ClickhouseMatchers {

  private def clean(value: String): String =
    value
      .replaceAll("\\s+", " ")
      .replace(" ( ", " (")
      .replace(" )", ")")
      .replace(" as ", " AS ")
      .trim

  private def diff(s1: String, s2: String): String =
    s1.zip(s2).map(tuple => if (tuple._1 == tuple._2) '_' else tuple._1).mkString("")

  def matchSQL(expected: String): Matcher[String] = (left: String) => MatchResult(
    clean(left) == clean(expected),
    s"""
       |SQL messages don't match.
       |${clean(left)}
       |!=
       |${clean(expected)}
       |
       |${diff(clean(left), clean(expected))}
       |""".stripMargin,
    "SQL messages are equal"
  )
}