remove use of base64 library in test suite

7 files changed, 15 insertions, 16 deletions

diff --git a/spec/converter_spec.rb b/spec/converter_spec.rb
index 1f379ed1..261f3036 100644
--- a/spec/converter_spec.rb
+++ b/spec/converter_spec.rb
@@ -142,7 +142,7 @@ describe Asciidoctor::PDF::Converter do
 
     it 'should not fail to remove tmp files if already removed' do
       image_data = File.read (fixture_file 'square.jpg'), mode: 'r:UTF-8'
-      encoded_image_data = Base64.strict_encode64 image_data
+      encoded_image_data = [image_data].pack 'm0'
       doc = Asciidoctor.load <<~EOS, backend: 'pdf'
       :page-background-image: image:data:image/png;base64,#{encoded_image_data}[Square,fit=cover]
       EOS
@@ -158,7 +158,7 @@ describe Asciidoctor::PDF::Converter do
     it 'should not fail to remove tmp files if they are not writable' do
       (expect do
         image_data = File.read (fixture_file 'square.jpg'), mode: 'r:UTF-8'
-        encoded_image_data = Base64.strict_encode64 image_data
+        encoded_image_data = [image_data].pack 'm0'
         doc = Asciidoctor.load <<~EOS, backend: 'pdf'
         :page-background-image: image:data:image/png;base64,#{encoded_image_data}[Square,fit=cover]
         EOS
@@ -180,7 +180,7 @@ describe Asciidoctor::PDF::Converter do
 
     it 'should keep tmp files if KEEP_ARTIFACTS environment variable is set' do
       image_data = File.read (fixture_file 'square.jpg'), mode: 'r:UTF-8'
-      encoded_image_data = Base64.strict_encode64 image_data
+      encoded_image_data = [image_data].pack 'm0'
       doc = Asciidoctor.load <<~EOS, backend: 'pdf'
       :page-background-image: image:data:image/png;base64,#{encoded_image_data}[Square,fit=cover]
       EOS
diff --git a/spec/cover_page_spec.rb b/spec/cover_page_spec.rb
index 388ed07e..bd487eb1 100644
--- a/spec/cover_page_spec.rb
+++ b/spec/cover_page_spec.rb
@@ -35,7 +35,7 @@ describe 'Asciidoctor::PDF::Converter - Cover Page' do
 
   it 'should add front cover page if front-cover-image attribute is set to data URI' do
     image_data = File.binread fixture_file 'cover.jpg'
-    encoded_image_data = Base64.strict_encode64 image_data
+    encoded_image_data = [image_data].pack 'm0'
     pdf = to_pdf <<~EOS
     = Document Title
     :front-cover-image: image:data:image/jpg;base64,#{encoded_image_data}[]
@@ -187,7 +187,7 @@ describe 'Asciidoctor::PDF::Converter - Cover Page' do
 
   it 'should add back cover page if back-cover-image attribute is set to data URI' do
     image_data = File.binread fixture_file 'cover.jpg'
-    encoded_image_data = Base64.strict_encode64 image_data
+    encoded_image_data = [image_data].pack 'm0'
     pdf = to_pdf <<~EOS
     = Document Title
     :front-cover-image: image:data:image/jpg;base64,#{encoded_image_data}[]
diff --git a/spec/image_spec.rb b/spec/image_spec.rb
index 5c6e3087..f6298827 100644
--- a/spec/image_spec.rb
+++ b/spec/image_spec.rb
@@ -43,7 +43,7 @@ describe 'Asciidoctor::PDF::Converter - Image' do
 
   it 'should not crash if doctitle contains inline image with data URI target' do
     image_data = File.binread fixture_file 'square.jpg'
-    encoded_image_data = Base64.strict_encode64 image_data
+    encoded_image_data = [image_data].pack 'm0'
     pdf = to_pdf <<~EOS, analyze: :image
     = Document Title image:data:image/jpg;base64,#{encoded_image_data}[]
 
@@ -1814,7 +1814,7 @@ describe 'Asciidoctor::PDF::Converter - Image' do
   context 'Data URI' do
     it 'should embed block image if target is a JPG data URI' do
       image_data = File.binread fixture_file 'square.jpg'
-      encoded_image_data = Base64.strict_encode64 image_data
+      encoded_image_data = [image_data].pack 'm0'
       pdf = to_pdf %(image::data:image/jpg;base64,#{encoded_image_data}[])
       images = get_images pdf, 1
       (expect images).to have_size 1
@@ -1825,14 +1825,14 @@ describe 'Asciidoctor::PDF::Converter - Image' do
 
     it 'should embed block image if target is an SVG data URI' do
       image_data = File.read (fixture_file 'square.svg'), mode: 'r:UTF-8'
-      encoded_image_data = Base64.strict_encode64 image_data
+      encoded_image_data = [image_data].pack 'm0'
       pdf = to_pdf %(image::data:image/svg+xml;base64,#{encoded_image_data}[]), analyze: :rect
       (expect pdf.rectangles).to have_size 1
     end
 
     it 'should embed inline image if target is a JPG data URI' do
       image_data = File.binread fixture_file 'square.jpg'
-      encoded_image_data = Base64.strict_encode64 image_data
+      encoded_image_data = [image_data].pack 'm0'
       pdf = to_pdf %(image:data:image/jpg;base64,#{encoded_image_data}[] base64)
       images = get_images pdf, 1
       (expect images).to have_size 1
@@ -1843,7 +1843,7 @@ describe 'Asciidoctor::PDF::Converter - Image' do
 
     it 'should embed inline image if target is an SVG data URI' do
       image_data = File.read (fixture_file 'square.svg'), mode: 'r:UTF-8'
-      encoded_image_data = Base64.strict_encode64 image_data
+      encoded_image_data = [image_data].pack 'm0'
       pdf = to_pdf %(image:data:image/svg+xml;base64,#{encoded_image_data}[]), analyze: :rect
       (expect pdf.rectangles).to have_size 1
     end
diff --git a/spec/page_spec.rb b/spec/page_spec.rb
index 52c3f377..6ebf76f6 100644
--- a/spec/page_spec.rb
+++ b/spec/page_spec.rb
@@ -1022,7 +1022,7 @@ describe 'Asciidoctor::PDF::Converter - Page' do
 
     it 'should use data URI specified by page-background-image attribute as page background', visual: true do
       image_data = File.binread fixture_file 'square.png'
-      encoded_image_data = Base64.strict_encode64 image_data
+      encoded_image_data = [image_data].pack 'm0'
       to_file = to_pdf_file <<~EOS, %(page-background-image-attr-data-uri.pdf)
       = Document Title
       :page-background-image: image:data:image/png;base64,#{encoded_image_data}[fit=fill]
@@ -1035,7 +1035,7 @@ describe 'Asciidoctor::PDF::Converter - Page' do
 
     it 'should use data URI specified in theme as page background', visual: true do
       image_data = File.binread fixture_file 'square.png'
-      encoded_image_data = Base64.strict_encode64 image_data
+      encoded_image_data = [image_data].pack 'm0'
       pdf_theme = { page_background_image: %(image:data:image/png;base64,#{encoded_image_data}[fit=fill]) }
       to_file = to_pdf_file <<~EOS, %(page-background-image-attr-data-uri.pdf), pdf_theme: pdf_theme
       = Document Title
diff --git a/spec/running_content_spec.rb b/spec/running_content_spec.rb
index ceb504bb..8e1264dd 100644
--- a/spec/running_content_spec.rb
+++ b/spec/running_content_spec.rb
@@ -3129,7 +3129,7 @@ describe 'Asciidoctor::PDF::Converter - Running Content' do
 
     it 'should support data URI image', visual: true do
       image_data = File.binread fixture_file 'tux.png'
-      encoded_image_data = Base64.strict_encode64 image_data
+      encoded_image_data = [image_data].pack 'm0'
       image_url = %(data:image/png;base64,#{encoded_image_data})
       pdf_theme = {
         footer_columns: '>50% <50%',
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 365cdc6f..4559d7e6 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -12,7 +12,6 @@ when 'true'
 end
 
 require 'asciidoctor/pdf'
-require 'base64'
 require 'fileutils'
 require 'pathname'
 require_relative 'spec_helper/ext'
diff --git a/spec/title_page_spec.rb b/spec/title_page_spec.rb
index 5640dbc9..4adc0970 100644
--- a/spec/title_page_spec.rb
+++ b/spec/title_page_spec.rb
@@ -230,7 +230,7 @@ describe 'Asciidoctor::PDF::Converter - Title Page' do
 
     it 'should add logo specified by title-logo-image document attribute with data URI to title page' do
       image_data = File.binread fixture_file 'tux.png'
-      encoded_image_data = Base64.strict_encode64 image_data
+      encoded_image_data = [image_data].pack 'm0'
       image_url = %(image:data:image/jpg;base64,#{encoded_image_data}[])
       pdf = to_pdf <<~EOS
       = Document Title
@@ -854,7 +854,7 @@ describe 'Asciidoctor::PDF::Converter - Title Page' do
 
     it 'should add logo specified by title-logo-image document attribute with data URI to title page' do
       image_data = File.binread fixture_file 'tux.png'
-      encoded_image_data = Base64.strict_encode64 image_data
+      encoded_image_data = [image_data].pack 'm0'
       image_url = %(image:data:image/jpg;base64,#{encoded_image_data}[])
       pdf = to_pdf <<~'EOS', pdf_theme: { title_page_logo_image: image_url }
       = Document Title