discourse/spec/lib/db_helper_spec.rb

144 lines
4.6 KiB
Ruby

# frozen_string_literal: true
RSpec.describe DbHelper do
fab!(:sidebar_url1) { Fabricate(:sidebar_url, name: "short-sidebar-url") }
fab!(:sidebar_url2) { Fabricate(:sidebar_url, name: "another-sidebar-url") }
let(:sidebar_url_name_limit) { SidebarUrl.columns_hash["name"].limit }
let(:long_sidebar_url_name) { "a" * (sidebar_url_name_limit + 1) }
describe ".remap" do
it "should remap columns properly" do
post = Fabricate(:post, cooked: "this is a specialcode that I included")
post_attributes = post.reload.attributes
badge = Fabricate(:badge, query: "specialcode")
badge_attributes = badge.reload.attributes
DbHelper.remap("specialcode", "codespecial")
post.reload
expect(post.cooked).to include("codespecial")
badge.reload
expect(badge.query).to eq("codespecial")
expect(badge_attributes.except("query")).to eq(badge.attributes.except("query"))
end
it "allows tables to be excluded from scanning" do
post = Fabricate(:post, cooked: "test")
DbHelper.remap("test", "something else", excluded_tables: %w[posts])
expect(post.reload.cooked).to eq("test")
end
it "does not remap readonly columns" do
post = Fabricate(:post, raw: "This is a test", cooked: "This is a test")
Migration::ColumnDropper.mark_readonly("posts", "cooked")
DbHelper.remap("test", "something else")
post.reload
expect(post.raw).to eq("This is a something else")
expect(post.cooked).to eq("This is a test")
DB.exec "DROP FUNCTION #{Migration::BaseDropper.readonly_function_name("posts", "cooked")} CASCADE"
end
context "when skip_max_length_violations is false" do
it "raises an exception if remap exceeds column length constraint by default" do
expect { DbHelper.remap("sidebar-url", long_sidebar_url_name) }.to raise_error(
PG::StringDataRightTruncation,
/value too long.*table: sidebar_urls,.*name/,
)
end
end
context "when skip_max_length_violations is true" do
it "skips a remap eligible row if new value exceeds column length constraint" do
DbHelper.remap("sidebar-url", long_sidebar_url_name, skip_max_length_violations: true)
sidebar_url1.reload
sidebar_url2.reload
expect(sidebar_url1.name).to eq("short-sidebar-url")
expect(sidebar_url2.name).to eq("another-sidebar-url")
end
it "logs skipped remaps due to max length constraints when verbose is true" do
expect {
DbHelper.remap(
"sidebar-url",
long_sidebar_url_name,
verbose: true,
skip_max_length_violations: true,
)
}.to output(/SKIPPED:/).to_stdout
sidebar_url1.reload
sidebar_url2.reload
expect(sidebar_url1.name).to eq("short-sidebar-url")
expect(sidebar_url2.name).to eq("another-sidebar-url")
end
end
end
describe ".regexp_replace" do
it "should remap columns correctly" do
post = Fabricate(:post, raw: "this is a [img]test[/img] post")
DbHelper.regexp_replace("\\[img\\]test\\[/img\\]", "[img]something[/img]")
expect(post.reload.raw).to include("[img]something[/img]")
end
context "when skip_max_length_violations is false" do
it "raises an exception if regexp_replace exceeds column length constraint by default" do
expect { DbHelper.regexp_replace("sidebar-url", long_sidebar_url_name) }.to raise_error(
PG::StringDataRightTruncation,
/value too long.*table: sidebar_urls,.*name/,
)
end
end
context "when skip_max_length_violations is true" do
it "skips regexp_replace eligible rows if new value exceeds column length constraint" do
DbHelper.regexp_replace(
"sidebar-url",
long_sidebar_url_name,
skip_max_length_violations: true,
)
sidebar_url1.reload
sidebar_url2.reload
expect(sidebar_url1.name).to eq("short-sidebar-url")
expect(sidebar_url2.name).to eq("another-sidebar-url")
end
it "logs skipped regexp_replace due to max length constraints when verbose is true" do
expect {
DbHelper.regexp_replace(
"sidebar-url",
long_sidebar_url_name,
verbose: true,
skip_max_length_violations: true,
)
}.to output(/SKIPPED:/).to_stdout
sidebar_url1.reload
sidebar_url2.reload
expect(sidebar_url1.name).to eq("short-sidebar-url")
expect(sidebar_url2.name).to eq("another-sidebar-url")
end
end
end
end