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require 'cairo'
require 'stringio'
class ContextTest < Test::Unit::TestCase
include CairoTestUtils
def setup
@output = StringIO.new
@surface = Cairo::PDFSurface.new(@output, 10, 10)
end
def test_new_and_destroy
context = Cairo::Context.new(@surface)
@surface.destroy
assert_no_match(/%%EOF\s*\z/m, @output.string)
context.destroy
assert_match(/%%EOF\s*\z/m, @output.string)
end
def test_new_with_block
Cairo::Context.new(@surface) do |context|
@surface.destroy
assert_no_match(/%%EOF\s*\z/m, @output.string)
end
assert_match(/%%EOF\s*\z/m, @output.string)
end
def test_new_with_block_and_destroy
assert_nothing_raised do
Cairo::Context.new(@surface) do |context|
context.destroy
end
end
end
def test_font_face
only_cairo_version(1, 7, 2)
context = Cairo::Context.new(@surface)
assert_kind_of(Cairo::FontFace, context.font_face)
face = Cairo::ToyFontFace.new("serif")
context.font_face = face
assert_equal("serif", context.font_face.family)
face = Cairo::ToyFontFace.new("sans")
context.font_face = face
assert_equal("sans", context.font_face.family)
end
def test_text_to_glyphs
only_cairo_version(1, 7, 2)
surface = Cairo::PDFSurface.new(StringIO.new, 10, 10)
context = Cairo::Context.new(surface)
scaled_font = Cairo::ScaledFont.new(context.font_face,
Cairo::Matrix.identity,
Cairo::Matrix.identity,
Cairo::FontOptions.new)
utf8 = "text"
glyphs, clusters, backward = scaled_font.text_to_glyphs(0, 0, utf8)
assert_nothing_raised do
context.show_text_glyphs(utf8, glyphs, clusters, backward)
end
end
def test_select_font_face
only_cairo_version(1, 7, 2)
context = Cairo::Context.new(@surface)
face = context.font_face
default_font_family = ""
# default_font_family = "Helvetica" if quartz?
# default_font_family = "Arial" if win32?
assert_equal([default_font_family,
Cairo::FONT_SLANT_NORMAL,
Cairo::FONT_WEIGHT_NORMAL],
[face.family, face.slant, face.weight])
context.select_font_face
face = context.font_face
assert_equal([default_font_family,
Cairo::FONT_SLANT_NORMAL,
Cairo::FONT_WEIGHT_NORMAL],
[face.family, face.slant, face.weight])
context.select_font_face(:serif, :italic, :bold)
face = context.font_face
assert_equal(["serif", Cairo::FONT_SLANT_ITALIC, Cairo::FONT_WEIGHT_BOLD],
[face.family, face.slant, face.weight])
end
def test_select_font_face_with_invalid_family_name
context = Cairo::Context.new(@surface)
exception = assert_raise(ArgumentError) do
context.select_font_face([999])
end
assert_equal("family name should be nil, String or Symbol: [999]",
exception.message)
end
end
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