/*
 * Copyright 2014-2023 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
 */

package utilities

import org.jetbrains.dokka.utilities.parseJson
import org.jetbrains.dokka.utilities.serializeAsCompactJson
import org.jetbrains.dokka.utilities.serializeAsPrettyJson
import kotlin.test.Test
import kotlin.test.assertEquals

class JsonTest {

    @Test
    fun `should serialize an object as compact json`() {
        val testObject = SimpleTestDataClass(
            someString = "Foo",
            someInt = 42,
            someDouble = 42.0
        )

        val actual = serializeAsCompactJson(testObject)
        val expected = "{\"someString\":\"Foo\",\"someInt\":42,\"someIntWithDefaultValue\":42,\"someDouble\":42.0}"

        assertEquals(expected, actual)
    }

    @Test
    fun `should serialize an object as pretty json`() {
        val testObject = SimpleTestDataClass(
            someString = "Foo",
            someInt = 42,
            someDouble = 42.0
        )

        val actual = serializeAsPrettyJson(testObject)

        val expected = """
            {
              "someString" : "Foo",
              "someInt" : 42,
              "someIntWithDefaultValue" : 42,
              "someDouble" : 42.0
            }""".trimIndent().withSystemLineSeparator()

        assertEquals(expected, actual)
    }

    @Test
    fun `should keep order of Set after serialize and deserialize`() {
        val testObject = SimpleTestSetDataClass(
            someStringSet = setOf("Foo", "Bar", "ABC")
        )
        val expected = testObject.someStringSet.toList() // ["Foo", "Bar", "ABC"]

        val jsonString = serializeAsCompactJson(testObject)
        val parsedClass: SimpleTestSetDataClass = parseJson(jsonString)
        val actual = parsedClass.someStringSet.toList()

        assertEquals(expected, actual)
    }

    /**
     * If the expected output was generated on Linux, but the tests are run under Windows,
     * the test might fail when comparing the strings due to different separators.
     */
    private fun String.withSystemLineSeparator(): String = this.replace("\n", System.lineSeparator())
}

data class SimpleTestDataClass(
    val someString: String,
    val someInt: Int,
    val someIntWithDefaultValue: Int = 42,
    val someDouble: Double
)

data class SimpleTestSetDataClass(
    val someStringSet: Set<String>
)