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require 'cases/helper'
require 'support/schema_dumping_helper'
if ActiveRecord::Base.connection.supports_comments?
class CommentTest < ActiveRecord::TestCase
include SchemaDumpingHelper
self.use_transactional_tests = false if current_adapter?(:Mysql2Adapter)
class Commented < ActiveRecord::Base
self.table_name = 'commenteds'
end
class BlankComment < ActiveRecord::Base
end
setup do
@connection = ActiveRecord::Base.connection
@connection.create_table('commenteds', comment: 'A table with comment', force: true) do |t|
t.string 'name', comment: 'Comment should help clarify the column purpose'
t.boolean 'obvious', comment: 'Question is: should you comment obviously named objects?'
t.string 'content'
t.index 'name', comment: %Q["Very important" index that powers all the performance.\nAnd it's fun!]
end
@connection.create_table('blank_comments', comment: ' ', force: true) do |t|
t.string :space_comment, comment: ' '
t.string :empty_comment, comment: ''
t.string :nil_comment, comment: nil
t.string :absent_comment
end
Commented.reset_column_information
BlankComment.reset_column_information
end
teardown do
@connection.drop_table 'commenteds', if_exists: true
@connection.drop_table 'blank_comments', if_exists: true
end
def test_column_created_in_block
column = Commented.columns_hash['name']
assert_equal :string, column.type
assert_equal 'Comment should help clarify the column purpose', column.comment
end
def test_blank_columns_created_in_block
%w[ space_comment empty_comment nil_comment absent_comment ].each do |field|
column = BlankComment.columns_hash[field]
assert_equal :string, column.type
assert_nil column.comment
end
end
def test_add_column_with_comment_later
@connection.add_column :commenteds, :rating, :integer, comment: 'I am running out of imagination'
Commented.reset_column_information
column = Commented.columns_hash['rating']
assert_equal :integer, column.type
assert_equal 'I am running out of imagination', column.comment
end
def test_add_index_with_comment_later
@connection.add_index :commenteds, :obvious, name: 'idx_obvious', comment: 'We need to see obvious comments'
index = @connection.indexes('commenteds').find { |idef| idef.name == 'idx_obvious' }
assert_equal 'We need to see obvious comments', index.comment
end
def test_add_comment_to_column
@connection.change_column :commenteds, :content, :string, comment: 'Whoa, content describes itself!'
Commented.reset_column_information
column = Commented.columns_hash['content']
assert_equal :string, column.type
assert_equal 'Whoa, content describes itself!', column.comment
end
def test_remove_comment_from_column
@connection.change_column :commenteds, :obvious, :string, comment: nil
Commented.reset_column_information
column = Commented.columns_hash['obvious']
assert_equal :string, column.type
assert_nil column.comment
end
def test_schema_dump_with_comments
# Do all the stuff from other tests
@connection.add_column :commenteds, :rating, :integer, comment: 'I am running out of imagination'
@connection.change_column :commenteds, :content, :string, comment: 'Whoa, content describes itself!'
@connection.change_column :commenteds, :obvious, :string, comment: nil
@connection.add_index :commenteds, :obvious, name: 'idx_obvious', comment: 'We need to see obvious comments'
# And check that these changes are reflected in dump
output = dump_table_schema 'commenteds'
assert_match %r[create_table "commenteds",.+\s+comment: "A table with comment"], output
assert_match %r[t\.string\s+"name",\s+comment: "Comment should help clarify the column purpose"], output
assert_match %r[t\.string\s+"obvious"\n], output
assert_match %r[t\.string\s+"content",\s+comment: "Whoa, content describes itself!"], output
assert_match %r[t\.integer\s+"rating",\s+comment: "I am running out of imagination"], output
assert_match %r[t\.index\s+.+\s+comment: "\\\"Very important\\\" index that powers all the performance.\\nAnd it's fun!"], output
assert_match %r[t\.index\s+.+\s+name: "idx_obvious",.+\s+comment: "We need to see obvious comments"], output
end
def test_schema_dump_omits_blank_comments
output = dump_table_schema 'blank_comments'
assert_match %r[create_table "blank_comments"], output
assert_no_match %r[create_table "blank_comments",.+comment:], output
assert_match %r[t\.string\s+"space_comment"\n], output
assert_no_match %r[t\.string\s+"space_comment", comment:\n], output
assert_match %r[t\.string\s+"empty_comment"\n], output
assert_no_match %r[t\.string\s+"empty_comment", comment:\n], output
assert_match %r[t\.string\s+"nil_comment"\n], output
assert_no_match %r[t\.string\s+"nil_comment", comment:\n], output
assert_match %r[t\.string\s+"absent_comment"\n], output
assert_no_match %r[t\.string\s+"absent_comment", comment:\n], output
end
end
end
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