From de8f0c157eda57f4062159a3a73712f9894d07c7 Mon Sep 17 00:00:00 2001
From: Stanislav Ruban <stanislav.ruban@jetbrains.com>
Date: Thu, 30 Nov 2023 22:03:32 +0100
Subject: [PATCH] [tests] Add test data for KT-50453

---
 .../box/builderInference/issues/kt50453.kt    | 35 +++++++++++++++++++
 .../builderInference/issues/kt50453.fir.kt    | 31 ++++++++++++++++
 .../tests/builderInference/issues/kt50453.kt  | 31 ++++++++++++++++
 3 files changed, 97 insertions(+)
 create mode 100644 compiler/testData/codegen/box/builderInference/issues/kt50453.kt
 create mode 100644 compiler/testData/diagnostics/tests/builderInference/issues/kt50453.fir.kt
 create mode 100644 compiler/testData/diagnostics/tests/builderInference/issues/kt50453.kt

diff --git a/compiler/testData/codegen/box/builderInference/issues/kt50453.kt b/compiler/testData/codegen/box/builderInference/issues/kt50453.kt
new file mode 100644
index 00000000000..a7281c6b680
--- /dev/null
+++ b/compiler/testData/codegen/box/builderInference/issues/kt50453.kt
@@ -0,0 +1,35 @@
+// ISSUE: KT-50453
+
+// IGNORE_LIGHT_ANALYSIS
+// IGNORE_BACKEND_K1: ANY
+// REASON: red code (see corresponding diagnostic test)
+
+// IGNORE_BACKEND_K2: JVM_IR, WASM
+// REASON: run-time failure (java.lang.ClassCastException: TargetType cannot be cast to DifferentType @ Kt50453Kt$box$1.invoke)
+
+fun box(): String {
+    build {
+        setTypeVariable(TargetType())
+        consume(getTypeVariable())
+    }
+    return "OK"
+}
+
+
+
+
+class TargetType
+class DifferentType
+
+fun consume(value: Any) {}
+fun consume(value: DifferentType) {}
+
+class Buildee<TV> {
+    fun setTypeVariable(value: TV) { storage = value }
+    fun getTypeVariable(): TV = storage
+    private var storage: TV = TargetType() as TV
+}
+
+fun <PTV> build(instructions: Buildee<PTV>.() -> Unit): Buildee<PTV> {
+    return Buildee<PTV>().apply(instructions)
+}
diff --git a/compiler/testData/diagnostics/tests/builderInference/issues/kt50453.fir.kt b/compiler/testData/diagnostics/tests/builderInference/issues/kt50453.fir.kt
new file mode 100644
index 00000000000..9136a144736
--- /dev/null
+++ b/compiler/testData/diagnostics/tests/builderInference/issues/kt50453.fir.kt
@@ -0,0 +1,31 @@
+// ISSUE: KT-50453
+// CHECK_TYPE_WITH_EXACT
+
+fun test() {
+    val buildee = build {
+        setTypeVariable(TargetType())
+        consume(getTypeVariable())
+    }
+    // exact type equality check — turns unexpected compile-time behavior into red code
+    // considered to be non-user-reproducible code for the purposes of these tests
+    checkExactType<Buildee<TargetType>>(buildee)
+}
+
+
+
+
+class TargetType
+class DifferentType
+
+fun consume(value: Any) {}
+fun consume(value: DifferentType) {}
+
+class Buildee<TV> {
+    fun setTypeVariable(value: TV) { storage = value }
+    fun getTypeVariable(): TV = storage
+    private var storage: TV = null!!
+}
+
+fun <PTV> build(instructions: Buildee<PTV>.() -> Unit): Buildee<PTV> {
+    return Buildee<PTV>().apply(instructions)
+}
diff --git a/compiler/testData/diagnostics/tests/builderInference/issues/kt50453.kt b/compiler/testData/diagnostics/tests/builderInference/issues/kt50453.kt
new file mode 100644
index 00000000000..19236a80570
--- /dev/null
+++ b/compiler/testData/diagnostics/tests/builderInference/issues/kt50453.kt
@@ -0,0 +1,31 @@
+// ISSUE: KT-50453
+// CHECK_TYPE_WITH_EXACT
+
+fun test() {
+    val buildee = build {
+        setTypeVariable(TargetType())
+        consume(<!TYPE_MISMATCH("DifferentType; TargetType"), TYPE_MISMATCH("DifferentType; TargetType")!>getTypeVariable()<!>)
+    }
+    // exact type equality check — turns unexpected compile-time behavior into red code
+    // considered to be non-user-reproducible code for the purposes of these tests
+    checkExactType<Buildee<TargetType>>(buildee)
+}
+
+
+
+
+class TargetType
+class DifferentType
+
+fun consume(value: Any) {}
+fun consume(value: DifferentType) {}
+
+class Buildee<TV> {
+    fun setTypeVariable(value: TV) { storage = value }
+    fun getTypeVariable(): TV = storage
+    private var storage: TV = null!!
+}
+
+fun <PTV> build(instructions: Buildee<PTV>.() -> Unit): Buildee<PTV> {
+    return Buildee<PTV>().apply(instructions)
+}