From 4c04bd19fe141072590f1c59bc1dde664867b385 Mon Sep 17 00:00:00 2001
From: Mateusz Fabisiak <m.fabisiak@avsystem.com>
Date: Fri, 19 Jun 2026 13:53:00 +0200
Subject: [PATCH] fix: use backtick-escaped constant reference for enum default
 values

---
 .../core/gen/model/ModelGenerator.kt          |  2 +-
 .../justworks/core/gen/ModelGeneratorTest.kt  | 34 +++++++++++++++++++
 2 files changed, 35 insertions(+), 1 deletion(-)

diff --git a/core/src/main/kotlin/com/avsystem/justworks/core/gen/model/ModelGenerator.kt b/core/src/main/kotlin/com/avsystem/justworks/core/gen/model/ModelGenerator.kt
index 0c3a997..44a0ec1 100644
--- a/core/src/main/kotlin/com/avsystem/justworks/core/gen/model/ModelGenerator.kt
+++ b/core/src/main/kotlin/com/avsystem/justworks/core/gen/model/ModelGenerator.kt
@@ -564,7 +564,7 @@ internal object ModelGenerator {
                 }
 
                 is String -> {
-                    CodeBlock.of("%T.%L", className, value.toEnumConstantName())
+                    CodeBlock.of("%T.%N", className, value.toEnumConstantName())
                 }
 
                 else -> {
diff --git a/core/src/test/kotlin/com/avsystem/justworks/core/gen/ModelGeneratorTest.kt b/core/src/test/kotlin/com/avsystem/justworks/core/gen/ModelGeneratorTest.kt
index 33b25b5..56261a3 100644
--- a/core/src/test/kotlin/com/avsystem/justworks/core/gen/ModelGeneratorTest.kt
+++ b/core/src/test/kotlin/com/avsystem/justworks/core/gen/ModelGeneratorTest.kt
@@ -640,6 +640,40 @@ class ModelGeneratorTest {
         )
     }
 
+    @Test
+    fun `enum default with numeric string value uses backtick-escaped constant reference`() {
+        val floorEnum =
+            EnumModel(
+                name = "Floor",
+                description = null,
+                type = EnumBackingType.STRING,
+                values = listOf(EnumModel.Value("1"), EnumModel.Value("2"), EnumModel.Value("3")),
+            )
+        val schema =
+            SchemaModel(
+                name = "Request",
+                description = null,
+                properties =
+                    listOf(
+                        PropertyModel("floor", TypeRef.Reference("Floor"), null, false, "1"),
+                    ),
+                requiredProperties = setOf("floor"),
+                allOf = null,
+                oneOf = null,
+                anyOf = null,
+                discriminator = null,
+            )
+        val files = generate(spec(schemas = listOf(schema), enums = listOf(floorEnum)))
+        val typeSpec = files.first { it.name == "Request" }.members.filterIsInstance<TypeSpec>()[0]
+        val constructor = assertNotNull(typeSpec.primaryConstructor)
+        val param = constructor.parameters.first { it.name == "floor" }
+        val defaultStr = param.defaultValue.toString()
+        assertTrue(
+            defaultStr.contains("`1`"),
+            "Expected backtick-escaped `1`, got: $defaultStr",
+        )
+    }
+
     @Test
     fun `array property with default emits listOf with element literals`() {
         val schema =