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# frozen_string_literal: true |
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require 'rails_helper' |
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RSpec.describe NoteLengthValidator do |
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subject { described_class.new(attributes: { note: true }, maximum: 500) } |
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describe '#validate' do |
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it 'adds an error when text is over configured character limit' do |
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text = 'a' * 520 |
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account = instance_double(Account, note: text, errors: activemodel_errors) |
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subject.validate_each(account, 'note', text) |
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expect(account.errors).to have_received(:add) |
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end |
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it 'reduces calculated length of auto-linkable space-separated URLs' do |
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text = [starting_string, example_link].join(' ') |
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account = instance_double(Account, note: text, errors: activemodel_errors) |
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subject.validate_each(account, 'note', text) |
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expect(account.errors).to_not have_received(:add) |
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end |
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it 'does not reduce calculated length of non-autolinkable URLs' do |
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text = [starting_string, example_link].join |
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account = instance_double(Account, note: text, errors: activemodel_errors) |
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subject.validate_each(account, 'note', text) |
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expect(account.errors).to have_received(:add) |
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end |
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it 'counts multi byte emoji as single character' do |
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text = '✨' * 500 |
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account = instance_double(Account, note: text, errors: activemodel_errors) |
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subject.validate_each(account, 'note', text) |
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expect(account.errors).to_not have_received(:add) |
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end |
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it 'counts ZWJ sequence emoji as single character' do |
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text = '🏳️⚧️' * 500 |
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account = instance_double(Account, note: text, errors: activemodel_errors) |
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subject.validate_each(account, 'note', text) |
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expect(account.errors).to_not have_received(:add) |
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end |
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private |
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def starting_string |
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'a' * 476 |
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end |
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def example_link |
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"http://#{'b' * 30}.com/example" |
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end |
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def activemodel_errors |
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instance_double(ActiveModel::Errors, add: nil) |
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end |
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end |
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end
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