127 lines
3.8 KiB
Ruby
127 lines
3.8 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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describe TemplateEngines::LiquidService do
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describe '#render' do
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let(:template) { 'up{env={{ci_environment_slug}}}' }
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let(:result) { subject }
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let_it_be(:slug) { 'env_slug' }
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let_it_be(:context) do
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{
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ci_environment_slug: slug,
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environment_filter: "container_name!=\"POD\",environment=\"#{slug}\""
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}
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end
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subject { described_class.new(template).render(context) }
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it 'with symbol keys in context it substitutes variables' do
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expect(result).to include("up{env=#{slug}")
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end
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context 'with multiple occurrences of variable in template' do
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let(:template) do
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'up{env1={{ci_environment_slug}},env2={{ci_environment_slug}}}'
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end
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it 'substitutes variables' do
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expect(result).to eq("up{env1=#{slug},env2=#{slug}}")
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end
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end
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context 'with multiple variables in template' do
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let(:template) do
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'up{env={{ci_environment_slug}},' \
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'{{environment_filter}}}'
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end
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it 'substitutes all variables' do
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expect(result).to eq(
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"up{env=#{slug}," \
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"container_name!=\"POD\",environment=\"#{slug}\"}"
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)
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end
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end
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context 'with unknown variables in template' do
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let(:template) { 'up{env={{env_slug}}}' }
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it 'does not substitute unknown variables' do
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expect(result).to eq("up{env=}")
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end
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end
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context 'with extra variables in context' do
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let(:template) { 'up{env={{ci_environment_slug}}}' }
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it 'substitutes variables' do
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# If context has only 1 key, there is no need for this spec.
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expect(context.count).to be > 1
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expect(result).to eq("up{env=#{slug}}")
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end
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end
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context 'with unknown and known variables in template' do
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let(:template) { 'up{env={{ci_environment_slug}},other_env={{env_slug}}}' }
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it 'substitutes known variables' do
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expect(result).to eq("up{env=#{slug},other_env=}")
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end
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end
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context 'Liquid errors' do
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shared_examples 'raises RenderError' do |message|
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it do
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expect { result }.to raise_error(described_class::RenderError, message)
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end
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end
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context 'when liquid raises error' do
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let(:template) { 'up{env={{ci_environment_slug}}' }
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let(:liquid_template) { Liquid::Template.new }
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before do
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allow(Liquid::Template).to receive(:parse).with(template).and_return(liquid_template)
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allow(liquid_template).to receive(:render!).and_raise(exception, message)
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end
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context 'raises Liquid::MemoryError' do
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let(:exception) { Liquid::MemoryError }
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let(:message) { 'Liquid error: Memory limits exceeded' }
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it_behaves_like 'raises RenderError', 'Memory limit exceeded while rendering template'
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end
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context 'raises Liquid::Error' do
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let(:exception) { Liquid::Error }
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let(:message) { 'Liquid error: Generic error message' }
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it_behaves_like 'raises RenderError', 'Error rendering query'
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end
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end
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context 'with template that is expensive to render' do
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let(:template) do
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'{% assign loop_count = 1000 %}'\
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'{% assign padStr = "0" %}'\
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'{% assign number_to_pad = "1" %}'\
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'{% assign strLength = number_to_pad | size %}'\
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'{% assign padLength = loop_count | minus: strLength %}'\
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'{% if padLength > 0 %}'\
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' {% assign padded = number_to_pad %}'\
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' {% for position in (1..padLength) %}'\
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' {% assign padded = padded | prepend: padStr %}'\
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' {% endfor %}'\
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' {{ padded }}'\
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'{% endif %}'
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end
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it_behaves_like 'raises RenderError', 'Memory limit exceeded while rendering template'
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end
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end
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end
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end
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