Add migration test fixtures

New test for MigrationQueryTest for Postgresql - not relevant for Sqlite as can't alter table to add primary keys

Add tests for compiler generation for single and compound primary keys

sqldelight-compiler/src/test/kotlin/app/cash/sqldelight/core/migrations/MigrationQueryTest.kt

@@ -29,6 +29,10 @@ class MigrationQueryTest {
     checkFixtureCompiles("alter-table-alter-column", PostgreSqlDialect())
   }
 
+  @Test fun `alter table add constraint`() {
+    checkFixtureCompiles("alter-table-add-constraint", PostgreSqlDialect())
+  }
+
   @Test fun `varying query migration packages`() {
     checkFixtureCompiles("varying-query-migration-packages", PostgreSqlDialect())
   }

sqldelight-compiler/src/test/migration-interface-fixtures/alter-table-add-constraint/com/example/1.sqm

@@ -0,0 +1,9 @@
+CREATE TABLE TestSingle(
+  first INTEGER,
+  second TEXT
+);
+
+CREATE TABLE TestCompound (
+  first INTEGER,
+  second TEXT
+);

sqldelight-compiler/src/test/migration-interface-fixtures/alter-table-add-constraint/com/example/2.sqm

@@ -0,0 +1,3 @@
+ALTER TABLE TestSingle ADD PRIMARY KEY (first);
+ALTER TABLE TestCompound ADD CONSTRAINT pk_first_second PRIMARY KEY (first, second);
+

sqldelight-compiler/src/test/migration-interface-fixtures/alter-table-add-constraint/com/example/Data.sq

@@ -0,0 +1,8 @@
+selectSingle:
+SELECT *
+FROM TestSingle;
+
+selectCompound:
+SELECT *
+FROM TestCompound;
+

sqldelight-compiler/src/test/migration-interface-fixtures/alter-table-add-constraint/output/com/example/DataQueries.kt

@@ -0,0 +1,51 @@
+package com.example
+
+import app.cash.sqldelight.Query
+import app.cash.sqldelight.TransacterImpl
+import app.cash.sqldelight.db.SqlDriver
+import app.cash.sqldelight.driver.jdbc.JdbcCursor
+import kotlin.Any
+import kotlin.Int
+import kotlin.String
+
+public class DataQueries(
+  driver: SqlDriver,
+) : TransacterImpl(driver) {
+  public fun <T : Any> selectSingle(mapper: (first: Int, second: String?) -> T): Query<T> =
+      Query(-79_317_191, arrayOf("TestSingle"), driver, "Data.sq", "selectSingle", """
+  |SELECT *
+  |FROM TestSingle
+  """.trimMargin()) { cursor ->
+    check(cursor is JdbcCursor)
+    mapper(
+      cursor.getInt(0)!!,
+      cursor.getString(1)
+    )
+  }
+
+  public fun selectSingle(): Query<TestSingle> = selectSingle { first, second ->
+    TestSingle(
+      first,
+      second
+    )
+  }
+
+  public fun <T : Any> selectCompound(mapper: (first: Int, second: String) -> T): Query<T> =
+      Query(-19_725_220, arrayOf("TestCompound"), driver, "Data.sq", "selectCompound", """
+  |SELECT *
+  |FROM TestCompound
+  """.trimMargin()) { cursor ->
+    check(cursor is JdbcCursor)
+    mapper(
+      cursor.getInt(0)!!,
+      cursor.getString(1)!!
+    )
+  }
+
+  public fun selectCompound(): Query<TestCompound> = selectCompound { first, second ->
+    TestCompound(
+      first,
+      second
+    )
+  }
+}

sqldelight-compiler/src/test/migration-interface-fixtures/alter-table-add-constraint/output/com/example/TestCompound.kt

@@ -0,0 +1,9 @@
+package com.example
+
+import kotlin.Int
+import kotlin.String
+
+public data class TestCompound(
+  public val first: Int,
+  public val second: String,
+)

sqldelight-compiler/src/test/migration-interface-fixtures/alter-table-add-constraint/output/com/example/TestSingle.kt

@@ -0,0 +1,9 @@
+package com.example
+
+import kotlin.Int
+import kotlin.String
+
+public data class TestSingle(
+  public val first: Int,
+  public val second: String?,
+)