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-rw-r--r--activerecord/test/cases/migration/command_recorder_test.rb25
-rw-r--r--activerecord/test/cases/migration/foreign_key_test.rb242
2 files changed, 267 insertions, 0 deletions
diff --git a/activerecord/test/cases/migration/command_recorder_test.rb b/activerecord/test/cases/migration/command_recorder_test.rb
index 1c0134843b..e955beae1a 100644
--- a/activerecord/test/cases/migration/command_recorder_test.rb
+++ b/activerecord/test/cases/migration/command_recorder_test.rb
@@ -270,6 +270,31 @@ module ActiveRecord
enable = @recorder.inverse_of :disable_extension, ['uuid-ossp']
assert_equal [:enable_extension, ['uuid-ossp'], nil], enable
end
+
+ def test_invert_add_foreign_key
+ enable = @recorder.inverse_of :add_foreign_key, [:dogs, :people]
+ assert_equal [:remove_foreign_key, [:dogs, :people]], enable
+ end
+
+ def test_invert_add_foreign_key_with_column
+ enable = @recorder.inverse_of :add_foreign_key, [:dogs, :people, column: "owner_id"]
+ assert_equal [:remove_foreign_key, [:dogs, column: "owner_id"]], enable
+ end
+
+ def test_invert_add_foreign_key_with_column_and_name
+ enable = @recorder.inverse_of :add_foreign_key, [:dogs, :people, column: "owner_id", name: "fk"]
+ assert_equal [:remove_foreign_key, [:dogs, name: "fk"]], enable
+ end
+
+ def test_remove_foreign_key_is_irreversible
+ assert_raises ActiveRecord::IrreversibleMigration do
+ @recorder.inverse_of :remove_foreign_key, [:dogs, column: "owner_id"]
+ end
+
+ assert_raises ActiveRecord::IrreversibleMigration do
+ @recorder.inverse_of :remove_foreign_key, [:dogs, name: "fk"]
+ end
+ end
end
end
end
diff --git a/activerecord/test/cases/migration/foreign_key_test.rb b/activerecord/test/cases/migration/foreign_key_test.rb
new file mode 100644
index 0000000000..c985092b4c
--- /dev/null
+++ b/activerecord/test/cases/migration/foreign_key_test.rb
@@ -0,0 +1,242 @@
+require 'cases/helper'
+require 'support/ddl_helper'
+require 'support/schema_dumping_helper'
+
+if ActiveRecord::Base.connection.supports_foreign_keys?
+module ActiveRecord
+ class Migration
+ class ForeignKeyTest < ActiveRecord::TestCase
+ include DdlHelper
+ include SchemaDumpingHelper
+
+ class Rocket < ActiveRecord::Base
+ end
+
+ class Astronaut < ActiveRecord::Base
+ end
+
+ setup do
+ @connection = ActiveRecord::Base.connection
+ @connection.create_table "rockets" do |t|
+ t.string :name
+ end
+
+ @connection.create_table "astronauts" do |t|
+ t.string :name
+ t.references :rocket
+ end
+ end
+
+ teardown do
+ if defined?(@connection)
+ @connection.execute "DROP TABLE IF EXISTS astronauts"
+ @connection.execute "DROP TABLE IF EXISTS rockets"
+ end
+ end
+
+ def test_foreign_keys
+ foreign_keys = @connection.foreign_keys("fk_test_has_fk")
+ assert_equal 1, foreign_keys.size
+
+ fk = foreign_keys.first
+ assert_equal "fk_test_has_fk", fk.from_table
+ assert_equal "fk_test_has_pk", fk.to_table
+ assert_equal "fk_id", fk.column
+ assert_equal "pk_id", fk.primary_key
+ assert_equal "fk_name", fk.name
+ end
+
+ def test_add_foreign_key_inferes_column
+ @connection.add_foreign_key :astronauts, :rockets
+
+ foreign_keys = @connection.foreign_keys("astronauts")
+ assert_equal 1, foreign_keys.size
+
+ fk = foreign_keys.first
+ assert_equal "astronauts", fk.from_table
+ assert_equal "rockets", fk.to_table
+ assert_equal "rocket_id", fk.column
+ assert_equal "id", fk.primary_key
+ assert_match(/^fk_rails_.{10}$/, fk.name)
+ end
+
+ def test_add_foreign_key_with_column
+ @connection.add_foreign_key :astronauts, :rockets, column: "rocket_id"
+
+ foreign_keys = @connection.foreign_keys("astronauts")
+ assert_equal 1, foreign_keys.size
+
+ fk = foreign_keys.first
+ assert_equal "astronauts", fk.from_table
+ assert_equal "rockets", fk.to_table
+ assert_equal "rocket_id", fk.column
+ assert_equal "id", fk.primary_key
+ assert_match(/^fk_rails_.{10}$/, fk.name)
+ end
+
+ def test_add_foreign_key_with_non_standard_primary_key
+ with_example_table @connection, "space_shuttles", "pk integer PRIMARY KEY" do
+ @connection.add_foreign_key(:astronauts, :space_shuttles,
+ column: "rocket_id", primary_key: "pk", name: "custom_pk")
+
+ foreign_keys = @connection.foreign_keys("astronauts")
+ assert_equal 1, foreign_keys.size
+
+ fk = foreign_keys.first
+ assert_equal "astronauts", fk.from_table
+ assert_equal "space_shuttles", fk.to_table
+ assert_equal "pk", fk.primary_key
+
+ @connection.remove_foreign_key :astronauts, name: "custom_pk"
+ end
+ end
+
+ def test_add_on_delete_restrict_foreign_key
+ @connection.add_foreign_key :astronauts, :rockets, column: "rocket_id", on_delete: :restrict
+
+ foreign_keys = @connection.foreign_keys("astronauts")
+ assert_equal 1, foreign_keys.size
+
+ fk = foreign_keys.first
+ if current_adapter?(:MysqlAdapter, :Mysql2Adapter)
+ # ON DELETE RESTRICT is the default on MySQL
+ assert_equal nil, fk.on_delete
+ else
+ assert_equal :restrict, fk.on_delete
+ end
+ end
+
+ def test_add_on_delete_cascade_foreign_key
+ @connection.add_foreign_key :astronauts, :rockets, column: "rocket_id", on_delete: :cascade
+
+ foreign_keys = @connection.foreign_keys("astronauts")
+ assert_equal 1, foreign_keys.size
+
+ fk = foreign_keys.first
+ assert_equal :cascade, fk.on_delete
+ end
+
+ def test_add_on_delete_nullify_foreign_key
+ @connection.add_foreign_key :astronauts, :rockets, column: "rocket_id", on_delete: :nullify
+
+ foreign_keys = @connection.foreign_keys("astronauts")
+ assert_equal 1, foreign_keys.size
+
+ fk = foreign_keys.first
+ assert_equal :nullify, fk.on_delete
+ end
+
+ def test_on_update_and_on_delete_raises_with_invalid_values
+ assert_raises ArgumentError do
+ @connection.add_foreign_key :astronauts, :rockets, column: "rocket_id", on_delete: :invalid
+ end
+
+ assert_raises ArgumentError do
+ @connection.add_foreign_key :astronauts, :rockets, column: "rocket_id", on_update: :invalid
+ end
+ end
+
+ def test_add_foreign_key_with_on_update
+ @connection.add_foreign_key :astronauts, :rockets, column: "rocket_id", on_update: :nullify
+
+ foreign_keys = @connection.foreign_keys("astronauts")
+ assert_equal 1, foreign_keys.size
+
+ fk = foreign_keys.first
+ assert_equal :nullify, fk.on_update
+ end
+
+ def test_remove_foreign_key_inferes_column
+ @connection.add_foreign_key :astronauts, :rockets
+
+ assert_equal 1, @connection.foreign_keys("astronauts").size
+ @connection.remove_foreign_key :astronauts, :rockets
+ assert_equal [], @connection.foreign_keys("astronauts")
+ end
+
+ def test_remove_foreign_key_by_column
+ @connection.add_foreign_key :astronauts, :rockets, column: "rocket_id"
+
+ assert_equal 1, @connection.foreign_keys("astronauts").size
+ @connection.remove_foreign_key :astronauts, column: "rocket_id"
+ assert_equal [], @connection.foreign_keys("astronauts")
+ end
+
+ def test_remove_foreign_key_by_name
+ @connection.add_foreign_key :astronauts, :rockets, column: "rocket_id", name: "fancy_named_fk"
+
+ assert_equal 1, @connection.foreign_keys("astronauts").size
+ @connection.remove_foreign_key :astronauts, name: "fancy_named_fk"
+ assert_equal [], @connection.foreign_keys("astronauts")
+ end
+
+ def test_remove_foreign_non_existing_foreign_key_raises
+ assert_raises ArgumentError do
+ @connection.remove_foreign_key :astronauts, :rockets
+ end
+ end
+
+ def test_schema_dumping
+ @connection.add_foreign_key :astronauts, :rockets
+ output = dump_table_schema "astronauts"
+ assert_match %r{\s+add_foreign_key "astronauts", "rockets"$}, output
+ end
+
+ def test_schema_dumping_with_options
+ output = dump_table_schema "fk_test_has_fk"
+ assert_match %r{\s+add_foreign_key "fk_test_has_fk", "fk_test_has_pk", column: "fk_id", primary_key: "pk_id", name: "fk_name"$}, output
+ end
+
+ def test_schema_dumping_on_delete_and_on_update_options
+ @connection.add_foreign_key :astronauts, :rockets, column: "rocket_id", on_delete: :nullify, on_update: :cascade
+
+ output = dump_table_schema "astronauts"
+ assert_match %r{\s+add_foreign_key "astronauts",.+on_update: :cascade,.+on_delete: :nullify$}, output
+ end
+
+ class CreateCitiesAndHousesMigration < ActiveRecord::Migration
+ def change
+ create_table("cities") { |t| }
+
+ create_table("houses") do |t|
+ t.column :city_id, :integer
+ end
+ add_foreign_key :houses, :cities, column: "city_id"
+ end
+ end
+
+ def test_add_foreign_key_is_reversible
+ migration = CreateCitiesAndHousesMigration.new
+ silence_stream($stdout) { migration.migrate(:up) }
+ assert_equal 1, @connection.foreign_keys("houses").size
+ ensure
+ silence_stream($stdout) { migration.migrate(:down) }
+ end
+ end
+ end
+end
+else
+module ActiveRecord
+ class Migration
+ class NoForeignKeySupportTest < ActiveRecord::TestCase
+ setup do
+ @connection = ActiveRecord::Base.connection
+ end
+
+ def test_add_foreign_key_should_be_noop
+ @connection.add_foreign_key :clubs, :categories
+ end
+
+ def test_remove_foreign_key_should_be_noop
+ @connection.remove_foreign_key :clubs, :categories
+ end
+
+ def test_foreign_keys_should_raise_not_implemented
+ assert_raises NotImplementedError do
+ @connection.foreign_keys("clubs")
+ end
+ end
+ end
+ end
+end
+end