From 818ece7e26c6ed7713d7e467ff8e76e12865e0b4 Mon Sep 17 00:00:00 2001
From: Jocelyne <jocelyne.abihaidar@jetbrains.com>
Date: Thu, 25 May 2023 19:10:20 +0200
Subject: [PATCH] chore: add test

---
 .../org/jetbrains/exposed/sql/Constraints.kt  |  8 +++-
 .../sql/tests/shared/ddl/CreateTableTests.kt  | 45 +++++++++++++++++++
 2 files changed, 52 insertions(+), 1 deletion(-)

diff --git a/exposed-core/src/main/kotlin/org/jetbrains/exposed/sql/Constraints.kt b/exposed-core/src/main/kotlin/org/jetbrains/exposed/sql/Constraints.kt
index 80c45f03e5..3304364624 100644
--- a/exposed-core/src/main/kotlin/org/jetbrains/exposed/sql/Constraints.kt
+++ b/exposed-core/src/main/kotlin/org/jetbrains/exposed/sql/Constraints.kt
@@ -117,11 +117,17 @@ data class ForeignKeyConstraint(
             }
             append("FOREIGN KEY ($fromColumns) REFERENCES $targetTableName($targetColumns)")
             if (deleteRule != ReferenceOption.NO_ACTION) {
-                append(" ON DELETE $deleteRule")
+                if (deleteRule == ReferenceOption.SET_DEFAULT && (currentDialect as? MysqlDialect)?.isMysql8 == false) {
+                    exposedLogger.warn("This MySQL version doesn't support FOREIGN KEY with SET DEFAULT reference option with ON DELETE clause. Please check your $fromTableName table.")
+                } else {
+                    append(" ON DELETE $deleteRule")
+                }
             }
             if (updateRule != ReferenceOption.NO_ACTION) {
                 if (currentDialect is OracleDialect || currentDialect.h2Mode == H2Dialect.H2CompatibilityMode.Oracle) {
                     exposedLogger.warn("Oracle doesn't support FOREIGN KEY with ON UPDATE clause. Please check your $fromTableName table.")
+                } else if (deleteRule == ReferenceOption.SET_DEFAULT && (currentDialect as? MysqlDialect)?.isMysql8 == false) {
+                    exposedLogger.warn("This MySQL version doesn't support FOREIGN KEY with SET DEFAULT reference option with ON UPDATE clause. Please check your $fromTableName table.")
                 } else {
                     append(" ON UPDATE $updateRule")
                 }
diff --git a/exposed-tests/src/test/kotlin/org/jetbrains/exposed/sql/tests/shared/ddl/CreateTableTests.kt b/exposed-tests/src/test/kotlin/org/jetbrains/exposed/sql/tests/shared/ddl/CreateTableTests.kt
index ea243fbee8..0dce5b7568 100644
--- a/exposed-tests/src/test/kotlin/org/jetbrains/exposed/sql/tests/shared/ddl/CreateTableTests.kt
+++ b/exposed-tests/src/test/kotlin/org/jetbrains/exposed/sql/tests/shared/ddl/CreateTableTests.kt
@@ -15,6 +15,7 @@ import org.jetbrains.exposed.sql.transactions.TransactionManager
 import org.jetbrains.exposed.sql.vendors.SQLiteDialect
 import org.jetbrains.exposed.sql.vendors.currentDialect
 import org.junit.Test
+import java.math.BigDecimal
 import java.util.*
 import kotlin.test.assertFails
 
@@ -572,6 +573,50 @@ class CreateTableTests : DatabaseTestsBase() {
         }
     }
 
+    @Test
+    fun testOnDeleteSetDefault() {
+        val category = object : Table("Category") {
+            val id = integer("id")
+            val name = varchar(name = "name", length = 20)
+
+            override val primaryKey = PrimaryKey(id)
+        }
+
+        val defaultCategoryId = 0
+
+        val item = object : Table("Item") {
+            val id = integer("id")
+            val name = varchar(name = "name", length = 20)
+            val categoryId = integer("categoryId")
+                .default(defaultCategoryId)
+                .references(
+                    category.id,
+                    onUpdate = ReferenceOption.SET_DEFAULT,
+                    onDelete = ReferenceOption.SET_DEFAULT
+                )
+
+            override val primaryKey = PrimaryKey(id)
+        }
+
+        withTables(category, item) { testDb ->
+            val isSetDefaultSupported = testDb != TestDB.MYSQL || this.db.isVersionCovers(BigDecimal("8.0"))
+            val onDeleteSetDefaultPart = if (isSetDefaultSupported) " ON DELETE SET DEFAULT" else ""
+            val onUpdateSetDefaultPart = if (isSetDefaultSupported && testDb !in listOf(TestDB.ORACLE, TestDB.H2_ORACLE)) " ON UPDATE SET DEFAULT" else ""
+
+            val expected = listOf(
+                "CREATE TABLE " + addIfNotExistsIfSupported() + "${this.identity(item)} (" +
+                    "${item.columns.joinToString { it.descriptionDdl(false) }}," +
+                    " CONSTRAINT ${"fk_Item_categoryId__id".inProperCase()}" +
+                    " FOREIGN KEY (${this.identity(item.categoryId)})" +
+                    " REFERENCES ${this.identity(category)}(${this.identity(category.id)})" +
+                    onDeleteSetDefaultPart +
+                    onUpdateSetDefaultPart +
+                    ")"
+            )
+            assertEqualCollections(item.ddl, expected)
+        }
+    }
+
     object OneTable : IntIdTable("one")
     object OneOneTable : IntIdTable("one.one")