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# encoding: utf-8
require File.join(File.expand_path(File.dirname(__FILE__)), "spec_helper")
describe "Repeaters" do
it "creates a stamp and increments Prawn::Repeater.count on initialize" do
orig_count = Prawn::Repeater.count
doc = sample_document
expect(doc).to receive(:create_stamp).with("prawn_repeater(#{orig_count})")
r = repeater(doc, :all) { :do_nothing }
expect(Prawn::Repeater.count).to eq(orig_count + 1)
end
it "must provide an :all filter" do
doc = sample_document
r = repeater(doc, :all) { :do_nothing }
expect((1..doc.page_count).all? { |i| r.match?(i) }).to eq true
end
it "must provide an :odd filter" do
doc = sample_document
r = repeater(doc, :odd) { :do_nothing }
odd, even = (1..doc.page_count).partition(&:odd?)
expect(odd.all? { |i| r.match?(i) }).to eq true
expect(even.any? { |i| r.match?(i) }).to eq false
end
it "must be able to filter by an array of page numbers" do
doc = sample_document
r = repeater(doc, [1, 2, 7]) { :do_nothing }
expect((1..10).select { |i| r.match?(i) }).to eq([1, 2, 7])
end
it "must be able to filter by a range of page numbers" do
doc = sample_document
r = repeater(doc, 2..4) { :do_nothing }
expect((1..10).select { |i| r.match?(i) }).to eq([2, 3, 4])
end
it "must be able to filter by an arbitrary proc" do
doc = sample_document
r = repeater(doc, lambda { |x| x == 1 or x % 3 == 0 })
expect((1..10).select { |i| r.match?(i) }).to eq([1, 3, 6, 9])
end
it "must try to run a stamp if the page number matches" do
doc = sample_document
expect(doc).to receive(:stamp)
repeater(doc, :odd).run(3)
end
it "must not try to run a stamp unless the page number matches" do
doc = sample_document
expect(doc).to_not receive(:stamp)
repeater(doc, :odd).run(2)
end
it "must not try to run a stamp if dynamic is selected" do
doc = sample_document
expect(doc).to_not receive(:stamp)
(1..10).each { |p| repeater(doc, :all, true){ :do_nothing }.run(p) }
end
it "must try to run a block if the page number matches" do
doc = sample_document
expect(doc).to receive(:draw_text).twice
(1..10).each { |p| repeater(doc, [1, 2], true){ doc.draw_text "foo" }.run(p) }
end
it "must not try to run a block unless the page number matches" do
doc = sample_document
expect(doc).to_not receive(:draw_text)
repeater(doc, :odd, true){ doc.draw_text "foo" }.run(2)
end
it "must treat any block as a closure" do
doc = sample_document
@page = "Page" # ensure access to ivars
doc.repeat(:all, :dynamic => true) do
doc.draw_text "#@page #{doc.page_number}", :at => [500, 0]
end
text = PDF::Inspector::Text.analyze(doc.render)
expect(text.strings).to eq((1..10).to_a.map{ |p| "Page #{p}" })
end
it "must treat any block as a closure (Document.new instance_eval form)" do
doc = Prawn::Document.new(:skip_page_creation => true) do
10.times { start_new_page }
@page = "Page"
repeat(:all, :dynamic => true) do
# ensure self is accessible here
draw_text "#@page #{page_number}", :at => [500, 0]
end
end
text = PDF::Inspector::Text.analyze(doc.render)
expect(text.strings).to eq((1..10).to_a.map{ |p| "Page #{p}" })
end
def sample_document
doc = Prawn::Document.new(:skip_page_creation => true)
10.times { |e| doc.start_new_page }
doc
end
def repeater(*args, &b)
Prawn::Repeater.new(*args, &b)
end
context "graphic state" do
it "should not alter the graphic state stack color space" do
create_pdf
starting_color_space = @pdf.state.page.graphic_state.color_space.dup
@pdf.repeat :all do
@pdf.text "Testing", :size => 24, :style => :bold
end
expect(@pdf.state.page.graphic_state.color_space).to eq(starting_color_space)
end
context "dynamic repeaters" do
it "should preserve the graphic state at creation time" do
create_pdf
@pdf.repeat :all, :dynamic => true do
@pdf.text "fill_color: #{@pdf.graphic_state.fill_color}"
@pdf.text "cap_style: #{@pdf.graphic_state.cap_style}"
end
@pdf.fill_color "666666"
@pdf.cap_style :round
text = PDF::Inspector::Text.analyze(@pdf.render)
expect(text.strings.include?("fill_color: 666666")).to eq(false)
expect(text.strings.include?("fill_color: 000000")).to eq(true)
expect(text.strings.include?("cap_style: round")).to eq(false)
expect(text.strings.include?("cap_style: butt")).to eq(true)
end
end
end
end
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