Fix samples errors after updated

Author: dkrasnoff

src/test/kotlin/com/compiler/server/base/BaseResourceCompileTest.kt

@@ -3,9 +3,17 @@ package com.compiler.server
 import com.compiler.server.model.ExecutionResult
 import com.compiler.server.model.ProjectType
 import java.io.File
+import java.security.MessageDigest
 import kotlin.test.assertNotNull
 import kotlin.test.assertTrue
 
+private val FILES_TO_USE_WORKAROUND = mapOf(
+    "5ec261721162729866abc1e8f7293ef4.31" to "a2c8dd6ff3a6074c01c7bb813cc2cbfb",
+    "5ec261721162729866abc1e8f7293ef4.32" to "69496b10b87ba1491dff96f2396c5b40",
+    "8a72411880f54ee0a305b57ed6c6901d.2" to "82e5ecc6747c91c85b697bd43cf93c93",
+    "4c8b9a374d2df52b3a804a9b8e54ee2b.20" to "e58b9c7e6996fcfd2a53da5373c683ba",
+)
+
 interface BaseResourceCompileTest {
     val testDirJVM: String
         get() = "src/test/resources/test-compile-data/jvm"
@@ -25,28 +33,20 @@ interface BaseResourceCompileTest {
             assertTrue(testFiles.isNotEmpty(), "No files in test directory")
 
             testFiles.forEach { file ->
-                val baseFileName = file.nameWithoutExtension
-                val workaroundFileName = "$baseFileName-workaround.kt"
-                val workaroundFile = File(file.parent, workaroundFileName)
-
-                // Some examples are needed to be rewritten,
-                // but it leads to new pull requests from verifier bot.
-                // That is why we added files `*-workaround.kt` to override the logic.
-                if (workaroundFile.exists() ) {
-                    return@forEach
-                }
-
-                val code = file.readText()
 
                 val platform: ProjectType = when (folder) {
                     testDirJVM -> ProjectType.JAVA
                     testDirJS -> ProjectType.JS_IR
                     else -> throw IllegalArgumentException("Unknown type $folder")
                 }
 
+                // Decide whether to use workaround expected output based on hash table
+                val expectedResultFile = getExpectedResultFile(platform, file, folder, badMap) ?: return@forEach
+                val code = expectedResultFile.readText()
+
                 val result = request(code, platform)
 
-                verifyResult(result, file)?.run {
+                verifyResult(result, expectedResultFile)?.run {
                     val key = "${platform.name}:${file.path.substring(folder.length + 1)}"
                     badMap[key] = badMap[key].orEmpty() + this
                 }
@@ -63,4 +63,34 @@ interface BaseResourceCompileTest {
             error("Compile tests failed.\nResults:\n$message")
         }
     }
+
+    fun getExpectedResultFile(
+        platform: ProjectType,
+        file: File,
+        folder: String,
+        badMap: MutableMap<String, String>,
+    ): File? {
+        val fileName = file.nameWithoutExtension
+        val expectedHash = FILES_TO_USE_WORKAROUND[fileName]
+        return if (expectedHash != null) {
+            val actualHash = md5Hex(file.readText())
+            if (!actualHash.equals(expectedHash, ignoreCase = true)) {
+                val key = "${platform.name}:${file.path.substring(folder.length + 1)}"
+                val msg =
+                    "Workaround hash mismatch. Actual MD5: $actualHash, expected: $expectedHash. Please review the source and update FILES_TO_USE_WORKAROUND entry and/or the *-workaround.json accordingly.\n"
+                badMap[key] = badMap[key].orEmpty() + msg
+                null
+            } else {
+                File(file.parent.replace("kotlin-web-site", "workaround-examples"), "${fileName}-workaround.kt")
+            }
+        } else {
+            file
+        }
+    }
+
+    private fun md5Hex(text: String): String {
+        return MessageDigest.getInstance("MD5")
+            .digest(text.toByteArray())
+            .toHexString(HexFormat.Default)
+    }
 }

src/test/resources/test-compile-data/jvm/kotlin-web-site/basic-syntax/5ec261721162729866abc1e8f7293ef4.31.kt renamed to src/test/resources/test-compile-data/jvm/workaround-examples/basic-syntax/5ec261721162729866abc1e8f7293ef4.31-workaround.kt

@@ -16,5 +16,10 @@ fun main() {
     }
     printLength("Incomprehensibilities")
     printLength(1000)
-    printLength(listOf(Any()))
+    val any = object : Any() {
+        override fun toString(): String {
+            return "Any"
+        }
+    }
+    printLength(listOf(any))
 }

src/test/resources/test-compile-data/jvm/kotlin-web-site/basic-syntax/5ec261721162729866abc1e8f7293ef4.33.kt renamed to src/test/resources/test-compile-data/jvm/workaround-examples/basic-syntax/5ec261721162729866abc1e8f7293ef4.32-workaround.kt

@@ -1,11 +1,9 @@
 //sampleStart
 fun getStringLength(obj: Any): Int? {
-    // `obj` is automatically cast to `String` on the right-hand side of `&&`
-    if (obj is String && obj.length > 0) {
-        return obj.length
-    }
+    if (obj !is String) return null
 
-    return null
+    // `obj` is automatically cast to `String` in this branch
+    return obj.length
 }
 //sampleEnd
 
@@ -14,6 +12,11 @@ fun main() {
         println("Getting the length of '$obj'. Result: ${getStringLength(obj) ?: "Error: The object is not a string"} ")
     }
     printLength("Incomprehensibilities")
-    printLength("")
     printLength(1000)
+    val any = object : Any() {
+        override fun toString(): String {
+            return "Any"
+        }
+    }
+    printLength(listOf(any))
 }

src/test/resources/test-compile-data/jvm/workaround-examples/object-declarations/8a72411880f54ee0a305b57ed6c6901d.2-workaround.kt

@@ -0,0 +1,12 @@
+object MyObject {
+    override fun toString(): String {
+        val superString = super.toString()
+        // MyObject@hashcode
+        return superString.substringBefore('@')
+    }
+}
+
+fun main() {
+    println(MyObject)
+    // MyObject
+}

src/test/resources/test-compile-data/jvm/workaround-examples/whatsnew11/4c8b9a374d2df52b3a804a9b8e54ee2b.20-workaround.kt

@@ -0,0 +1,7 @@
+fun main(args: Array<String>) {
+//sampleStart
+    val array = arrayOf("a", "b", "c")
+    println(array.toString().substringBefore('@'))  // JVM implementation: type-and-hash gibberish
+    println(array.contentToString())  // nicely formatted as list
+//sampleEnd
+}

src/test/resources/test-compile-output/jvm/kotlin-web-site/basic-syntax/5ec261721162729866abc1e8f7293ef4.31.json

@@ -0,0 +1 @@
+{"errors":{"File.kt":[]},"exception":null,"jvmByteCode":null,"text":"<outStream>Getting the length of 'Incomprehensibilities'. Result: 21 \nGetting the length of '1000'. Result: Error: The object is not a string \nGetting the length of '[java.lang.Object@1f17ae12]'. Result: Error: The object is not a string \n</outStream>"}

src/test/resources/test-compile-output/jvm/kotlin-web-site/basic-syntax/5ec261721162729866abc1e8f7293ef4.32.json

@@ -0,0 +1 @@
+{"errors":{"File.kt":[]},"exception":null,"jvmByteCode":null,"text":"<outStream>Getting the length of 'Incomprehensibilities'. Result: 21 \nGetting the length of '1000'. Result: Error: The object is not a string \nGetting the length of '[java.lang.Object@1f17ae12]'. Result: Error: The object is not a string \n</outStream>"}

src/test/resources/test-compile-output/jvm/kotlin-web-site/classes/9a7f7ce4c7af4e4eee2ec59bca4cd256.1.json

@@ -1 +1 @@
-{"exception":null,"text":"<outStream>First property: hello\nFirst initializer block that prints hello\nSecond property: 5\nSecond initializer block that prints 5\n</outStream>","jvmByteCode":null,"errors":{"File.kt":[]}}
+{"errors":{"File.kt":[]},"exception":null,"jvmByteCode":null,"text":"<outStream>Alice\n0\n</outStream>"}

src/test/resources/test-compile-output/jvm/kotlin-web-site/classes/9a7f7ce4c7af4e4eee2ec59bca4cd256.10.json

@@ -0,0 +1 @@
+{"errors":{"File.kt":[]},"exception":null,"jvmByteCode":null,"text":"<outStream>Hello, my name is Alice.\nI am Alice, 20 years old, and I study at Engineering University.\n</outStream>"}

src/test/resources/test-compile-output/jvm/kotlin-web-site/classes/9a7f7ce4c7af4e4eee2ec59bca4cd256.11.json

@@ -0,0 +1 @@
+{"errors":{"File.kt":[]},"exception":null,"jvmByteCode":null,"text":"<outStream>Anonymous\n</outStream>"}