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relspecgo/pkg/writers/pgsql/migration_writer_test.go
Hein 40bc0be1cb
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SQL Writer
2025-12-17 11:05:42 +02:00

288 lines
8.5 KiB
Go

package pgsql
import (
"bytes"
"strings"
"testing"
"git.warky.dev/wdevs/relspecgo/pkg/models"
"git.warky.dev/wdevs/relspecgo/pkg/writers"
)
func TestWriteMigration_NewTable(t *testing.T) {
// Current database (empty)
current := models.InitDatabase("testdb")
currentSchema := models.InitSchema("public")
current.Schemas = append(current.Schemas, currentSchema)
// Model database (with new table)
model := models.InitDatabase("testdb")
modelSchema := models.InitSchema("public")
table := models.InitTable("users", "public")
idCol := models.InitColumn("id", "users", "public")
idCol.Type = "integer"
idCol.NotNull = true
table.Columns["id"] = idCol
nameCol := models.InitColumn("name", "users", "public")
nameCol.Type = "text"
table.Columns["name"] = nameCol
modelSchema.Tables = append(modelSchema.Tables, table)
model.Schemas = append(model.Schemas, modelSchema)
// Generate migration
var buf bytes.Buffer
writer := NewMigrationWriter(&writers.WriterOptions{})
writer.writer = &buf
err := writer.WriteMigration(model, current)
if err != nil {
t.Fatalf("WriteMigration failed: %v", err)
}
output := buf.String()
t.Logf("Generated migration:\n%s", output)
// Verify CREATE TABLE is present
if !strings.Contains(output, "CREATE TABLE") {
t.Error("Migration missing CREATE TABLE statement")
}
if !strings.Contains(output, "users") {
t.Error("Migration missing table name 'users'")
}
}
func TestWriteMigration_AddColumn(t *testing.T) {
// Current database (with table but missing column)
current := models.InitDatabase("testdb")
currentSchema := models.InitSchema("public")
currentTable := models.InitTable("users", "public")
idCol := models.InitColumn("id", "users", "public")
idCol.Type = "integer"
currentTable.Columns["id"] = idCol
currentSchema.Tables = append(currentSchema.Tables, currentTable)
current.Schemas = append(current.Schemas, currentSchema)
// Model database (with additional column)
model := models.InitDatabase("testdb")
modelSchema := models.InitSchema("public")
modelTable := models.InitTable("users", "public")
idCol2 := models.InitColumn("id", "users", "public")
idCol2.Type = "integer"
modelTable.Columns["id"] = idCol2
emailCol := models.InitColumn("email", "users", "public")
emailCol.Type = "text"
modelTable.Columns["email"] = emailCol
modelSchema.Tables = append(modelSchema.Tables, modelTable)
model.Schemas = append(model.Schemas, modelSchema)
// Generate migration
var buf bytes.Buffer
writer := NewMigrationWriter(&writers.WriterOptions{})
writer.writer = &buf
err := writer.WriteMigration(model, current)
if err != nil {
t.Fatalf("WriteMigration failed: %v", err)
}
output := buf.String()
t.Logf("Generated migration:\n%s", output)
// Verify ADD COLUMN is present
if !strings.Contains(output, "ADD COLUMN") {
t.Error("Migration missing ADD COLUMN statement")
}
if !strings.Contains(output, "email") {
t.Error("Migration missing column name 'email'")
}
}
func TestWriteMigration_ChangeColumnType(t *testing.T) {
// Current database (with integer column)
current := models.InitDatabase("testdb")
currentSchema := models.InitSchema("public")
currentTable := models.InitTable("users", "public")
idCol := models.InitColumn("id", "users", "public")
idCol.Type = "integer"
currentTable.Columns["id"] = idCol
currentSchema.Tables = append(currentSchema.Tables, currentTable)
current.Schemas = append(current.Schemas, currentSchema)
// Model database (changed to bigint)
model := models.InitDatabase("testdb")
modelSchema := models.InitSchema("public")
modelTable := models.InitTable("users", "public")
idCol2 := models.InitColumn("id", "users", "public")
idCol2.Type = "bigint"
modelTable.Columns["id"] = idCol2
modelSchema.Tables = append(modelSchema.Tables, modelTable)
model.Schemas = append(model.Schemas, modelSchema)
// Generate migration
var buf bytes.Buffer
writer := NewMigrationWriter(&writers.WriterOptions{})
writer.writer = &buf
err := writer.WriteMigration(model, current)
if err != nil {
t.Fatalf("WriteMigration failed: %v", err)
}
output := buf.String()
t.Logf("Generated migration:\n%s", output)
// Verify ALTER COLUMN TYPE is present
if !strings.Contains(output, "ALTER COLUMN") {
t.Error("Migration missing ALTER COLUMN statement")
}
if !strings.Contains(output, "TYPE bigint") {
t.Error("Migration missing TYPE bigint")
}
}
func TestWriteMigration_AddForeignKey(t *testing.T) {
// Current database (two tables, no relationship)
current := models.InitDatabase("testdb")
currentSchema := models.InitSchema("public")
usersTable := models.InitTable("users", "public")
idCol := models.InitColumn("id", "users", "public")
idCol.Type = "integer"
usersTable.Columns["id"] = idCol
postsTable := models.InitTable("posts", "public")
postIdCol := models.InitColumn("id", "posts", "public")
postIdCol.Type = "integer"
postsTable.Columns["id"] = postIdCol
userIdCol := models.InitColumn("user_id", "posts", "public")
userIdCol.Type = "integer"
postsTable.Columns["user_id"] = userIdCol
currentSchema.Tables = append(currentSchema.Tables, usersTable, postsTable)
current.Schemas = append(current.Schemas, currentSchema)
// Model database (with foreign key)
model := models.InitDatabase("testdb")
modelSchema := models.InitSchema("public")
modelUsersTable := models.InitTable("users", "public")
modelIdCol := models.InitColumn("id", "users", "public")
modelIdCol.Type = "integer"
modelUsersTable.Columns["id"] = modelIdCol
modelPostsTable := models.InitTable("posts", "public")
modelPostIdCol := models.InitColumn("id", "posts", "public")
modelPostIdCol.Type = "integer"
modelPostsTable.Columns["id"] = modelPostIdCol
modelUserIdCol := models.InitColumn("user_id", "posts", "public")
modelUserIdCol.Type = "integer"
modelPostsTable.Columns["user_id"] = modelUserIdCol
// Add foreign key constraint
fkConstraint := &models.Constraint{
Name: "fk_posts_users",
Type: models.ForeignKeyConstraint,
Columns: []string{"user_id"},
ReferencedTable: "users",
ReferencedSchema: "public",
ReferencedColumns: []string{"id"},
OnDelete: "CASCADE",
OnUpdate: "CASCADE",
}
modelPostsTable.Constraints["fk_posts_users"] = fkConstraint
modelSchema.Tables = append(modelSchema.Tables, modelUsersTable, modelPostsTable)
model.Schemas = append(model.Schemas, modelSchema)
// Generate migration
var buf bytes.Buffer
writer := NewMigrationWriter(&writers.WriterOptions{})
writer.writer = &buf
err := writer.WriteMigration(model, current)
if err != nil {
t.Fatalf("WriteMigration failed: %v", err)
}
output := buf.String()
t.Logf("Generated migration:\n%s", output)
// Verify FOREIGN KEY is present
if !strings.Contains(output, "FOREIGN KEY") {
t.Error("Migration missing FOREIGN KEY statement")
}
if !strings.Contains(output, "ON DELETE CASCADE") {
t.Error("Migration missing ON DELETE CASCADE")
}
}
func TestWriteMigration_AddIndex(t *testing.T) {
// Current database (table without index)
current := models.InitDatabase("testdb")
currentSchema := models.InitSchema("public")
currentTable := models.InitTable("users", "public")
emailCol := models.InitColumn("email", "users", "public")
emailCol.Type = "text"
currentTable.Columns["email"] = emailCol
currentSchema.Tables = append(currentSchema.Tables, currentTable)
current.Schemas = append(current.Schemas, currentSchema)
// Model database (with unique index)
model := models.InitDatabase("testdb")
modelSchema := models.InitSchema("public")
modelTable := models.InitTable("users", "public")
modelEmailCol := models.InitColumn("email", "users", "public")
modelEmailCol.Type = "text"
modelTable.Columns["email"] = modelEmailCol
// Add unique index
index := &models.Index{
Name: "uk_users_email",
Unique: true,
Columns: []string{"email"},
Type: "btree",
}
modelTable.Indexes["uk_users_email"] = index
modelSchema.Tables = append(modelSchema.Tables, modelTable)
model.Schemas = append(model.Schemas, modelSchema)
// Generate migration
var buf bytes.Buffer
writer := NewMigrationWriter(&writers.WriterOptions{})
writer.writer = &buf
err := writer.WriteMigration(model, current)
if err != nil {
t.Fatalf("WriteMigration failed: %v", err)
}
output := buf.String()
t.Logf("Generated migration:\n%s", output)
// Verify CREATE UNIQUE INDEX is present
if !strings.Contains(output, "CREATE UNIQUE INDEX") {
t.Error("Migration missing CREATE UNIQUE INDEX statement")
}
if !strings.Contains(output, "uk_users_email") {
t.Error("Migration missing index name")
}
}