Add SQLite support

sqlite_test.go

@@ -0,0 +1,177 @@
+package main
+
+import (
+	"database/sql"
+	"github.com/stretchr/testify/require"
+	"net/url"
+	"os"
+	"testing"
+)
+
+func sqliteTestURL(t *testing.T) *url.URL {
+	u, err := url.Parse("sqlite3:////tmp/dbmate.sqlite3")
+	require.Nil(t, err)
+
+	return u
+}
+
+func prepTestSQLiteDB(t *testing.T) *sql.DB {
+	drv := SQLiteDriver{}
+	u := sqliteTestURL(t)
+
+	// drop any existing database
+	err := drv.DropDatabase(u)
+	require.Nil(t, err)
+
+	// create database
+	err = drv.CreateDatabase(u)
+	require.Nil(t, err)
+
+	// connect database
+	db, err := drv.Open(u)
+	require.Nil(t, err)
+
+	return db
+}
+
+func TestSQLiteCreateDropDatabase(t *testing.T) {
+	drv := SQLiteDriver{}
+	u := sqliteTestURL(t)
+
+	// drop any existing database
+	err := drv.DropDatabase(u)
+	require.Nil(t, err)
+
+	// create database
+	err = drv.CreateDatabase(u)
+	require.Nil(t, err)
+
+	// check that database exists
+	_, err = os.Stat(sqlitePath(u))
+	require.Nil(t, err)
+
+	// drop the database
+	err = drv.DropDatabase(u)
+	require.Nil(t, err)
+
+	// check that database no longer exists
+	_, err = os.Stat(sqlitePath(u))
+	require.NotNil(t, err)
+	require.Equal(t, true, os.IsNotExist(err))
+}
+
+func TestSQLiteDatabaseExists(t *testing.T) {
+	drv := SQLiteDriver{}
+	u := sqliteTestURL(t)
+
+	// drop any existing database
+	err := drv.DropDatabase(u)
+	require.Nil(t, err)
+
+	// DatabaseExists should return false
+	exists, err := drv.DatabaseExists(u)
+	require.Nil(t, err)
+	require.Equal(t, false, exists)
+
+	// create database
+	err = drv.CreateDatabase(u)
+	require.Nil(t, err)
+
+	// DatabaseExists should return true
+	exists, err = drv.DatabaseExists(u)
+	require.Nil(t, err)
+	require.Equal(t, true, exists)
+}
+
+func TestSQLiteCreateMigrationsTable(t *testing.T) {
+	drv := SQLiteDriver{}
+	db := prepTestSQLiteDB(t)
+	defer mustClose(db)
+
+	// migrations table should not exist
+	count := 0
+	err := db.QueryRow("select count(*) from schema_migrations").Scan(&count)
+	require.Regexp(t, "no such table: schema_migrations", err.Error())
+
+	// create table
+	err = drv.CreateMigrationsTable(db)
+	require.Nil(t, err)
+
+	// migrations table should exist
+	err = db.QueryRow("select count(*) from schema_migrations").Scan(&count)
+	require.Nil(t, err)
+
+	// create table should be idempotent
+	err = drv.CreateMigrationsTable(db)
+	require.Nil(t, err)
+}
+
+func TestSQLiteSelectMigrations(t *testing.T) {
+	drv := SQLiteDriver{}
+	db := prepTestSQLiteDB(t)
+	defer mustClose(db)
+
+	err := drv.CreateMigrationsTable(db)
+	require.Nil(t, err)
+
+	_, err = db.Exec(`insert into schema_migrations (version)
+		values ('abc2'), ('abc1'), ('abc3')`)
+	require.Nil(t, err)
+
+	migrations, err := drv.SelectMigrations(db, -1)
+	require.Nil(t, err)
+	require.Equal(t, true, migrations["abc1"])
+	require.Equal(t, true, migrations["abc2"])
+	require.Equal(t, true, migrations["abc2"])
+
+	// test limit param
+	migrations, err = drv.SelectMigrations(db, 1)
+	require.Nil(t, err)
+	require.Equal(t, true, migrations["abc3"])
+	require.Equal(t, false, migrations["abc1"])
+	require.Equal(t, false, migrations["abc2"])
+}
+
+func TestSQLiteInsertMigration(t *testing.T) {
+	drv := SQLiteDriver{}
+	db := prepTestSQLiteDB(t)
+	defer mustClose(db)
+
+	err := drv.CreateMigrationsTable(db)
+	require.Nil(t, err)
+
+	count := 0
+	err = db.QueryRow("select count(*) from schema_migrations").Scan(&count)
+	require.Nil(t, err)
+	require.Equal(t, 0, count)
+
+	// insert migration
+	err = drv.InsertMigration(db, "abc1")
+	require.Nil(t, err)
+
+	err = db.QueryRow("select count(*) from schema_migrations where version = 'abc1'").
+		Scan(&count)
+	require.Nil(t, err)
+	require.Equal(t, 1, count)
+}
+
+func TestSQLiteDeleteMigration(t *testing.T) {
+	drv := SQLiteDriver{}
+	db := prepTestSQLiteDB(t)
+	defer mustClose(db)
+
+	err := drv.CreateMigrationsTable(db)
+	require.Nil(t, err)
+
+	_, err = db.Exec(`insert into schema_migrations (version)
+		values ('abc1'), ('abc2')`)
+	require.Nil(t, err)
+
+	err = drv.DeleteMigration(db, "abc2")
+	require.Nil(t, err)
+
+	count := 0
+	err = db.QueryRow("select count(*) from schema_migrations").Scan(&count)
+	require.Nil(t, err)
+	require.Equal(t, 1, count)
+}