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require "cases/helper"
require "support/schema_dumping_helper"
if ActiveRecord::Base.connection.supports_comments?
class CommentTest < ActiveRecord::TestCase
include SchemaDumpingHelper
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
t.index :space_comment, comment: " "
t.index :empty_comment, comment: ""
t.index :nil_comment, comment: nil
t.index :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_blank_indexes_created_in_block
@connection.indexes("blank_comments").each do |index|
assert_nil index.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, :content, :string
@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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