/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.spark.sql.sources

import org.apache.spark.SparkFunSuite
import org.apache.spark.sql.AnalysisException
import org.apache.spark.sql.execution.datasources.DataSource

class ResolvedDataSourceSuite extends SparkFunSuite {
  private def getProvidingClass(name: String): Class[_] =
    DataSource(sparkSession = null, className = name).providingClass

  test("jdbc") {
    assert(
      getProvidingClass("jdbc") ===
      classOf[org.apache.spark.sql.execution.datasources.jdbc.JdbcRelationProvider])
    assert(
      getProvidingClass("org.apache.spark.sql.execution.datasources.jdbc") ===
      classOf[org.apache.spark.sql.execution.datasources.jdbc.JdbcRelationProvider])
    assert(
      getProvidingClass("org.apache.spark.sql.jdbc") ===
        classOf[org.apache.spark.sql.execution.datasources.jdbc.JdbcRelationProvider])
  }

  test("json") {
    assert(
      getProvidingClass("json") ===
      classOf[org.apache.spark.sql.execution.datasources.json.JsonFileFormat])
    assert(
      getProvidingClass("org.apache.spark.sql.execution.datasources.json") ===
        classOf[org.apache.spark.sql.execution.datasources.json.JsonFileFormat])
    assert(
      getProvidingClass("org.apache.spark.sql.json") ===
        classOf[org.apache.spark.sql.execution.datasources.json.JsonFileFormat])
  }

  test("parquet") {
    assert(
      getProvidingClass("parquet") ===
      classOf[org.apache.spark.sql.execution.datasources.parquet.ParquetFileFormat])
    assert(
      getProvidingClass("org.apache.spark.sql.execution.datasources.parquet") ===
        classOf[org.apache.spark.sql.execution.datasources.parquet.ParquetFileFormat])
    assert(
      getProvidingClass("org.apache.spark.sql.parquet") ===
        classOf[org.apache.spark.sql.execution.datasources.parquet.ParquetFileFormat])
  }

  test("csv") {
    assert(
      getProvidingClass("csv") ===
        classOf[org.apache.spark.sql.execution.datasources.csv.CSVFileFormat])
    assert(
      getProvidingClass("com.databricks.spark.csv") ===
        classOf[org.apache.spark.sql.execution.datasources.csv.CSVFileFormat])
  }

  test("error message for unknown data sources") {
    val error1 = intercept[AnalysisException] {
      getProvidingClass("avro")
    }
    assert(error1.getMessage.contains("Failed to find data source: avro."))

    val error2 = intercept[AnalysisException] {
      getProvidingClass("com.databricks.spark.avro")
    }
    assert(error2.getMessage.contains("Failed to find data source: com.databricks.spark.avro."))

    val error3 = intercept[ClassNotFoundException] {
      getProvidingClass("asfdwefasdfasdf")
    }
    assert(error3.getMessage.contains("Failed to find data source: asfdwefasdfasdf."))
  }
}
