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require "spec_helper"
describe "Export::PNG" do
let(:mockImage) { double(:mock_image) }
before :each do
allow(mockImage).to receive(:[]=)
end
it "must respond_to png" do
expect(RQRCode::QRCode.new("x")).to respond_to(:as_png)
end
it "must export to png file" do
expect(RQRCode::QRCode.new("png").as_png).to be_instance_of(ChunkyPNG::Image)
end
it "must export a png using the correct defaults" do
expect(ChunkyPNG::Image).to receive(:new)
.once
.with(120, 120, 4294967295)
.and_return(mockImage)
expect(mockImage).not_to receive(:save)
RQRCode::QRCode.new("png").as_png
end
context "with various color inputs" do
before :each do
allow(ChunkyPNG).to receive(:Color).and_call_original
expect(mockImage).to receive(:save)
.once
.with("some/path", {bit_depth: 1, color_mode: 0})
end
it "should handle the defaults" do
expect(ChunkyPNG::Image).to receive(:new)
.once
.with(174, 174, 4294967295)
.and_return(mockImage)
RQRCode::QRCode.new("png").as_png(
file: "some/path"
)
expect(ChunkyPNG).to have_received(:Color).with("black").once
expect(ChunkyPNG).to have_received(:Color).with("white").once
end
it "should handle a blue 'color'" do
expect(ChunkyPNG::Image).to receive(:new)
.once
.with(174, 174, 4294967295)
.and_return(mockImage)
RQRCode::QRCode.new("png").as_png(
file: "some/path",
color: "blue"
)
expect(ChunkyPNG).to have_received(:Color).with("blue").once
expect(ChunkyPNG).to have_received(:Color).with("white").once
end
it "should handle a #FC0000 'color'" do
expect(ChunkyPNG::Image).to receive(:new)
.once
.with(174, 174, 4294967295)
.and_return(mockImage)
RQRCode::QRCode.new("png").as_png(
file: "some/path",
color: "#FC0000"
)
expect(ChunkyPNG).to have_received(:Color).with("#FC0000").once
expect(ChunkyPNG).to have_received(:Color).with("white").once
end
it "should handle an rgb 'color'" do
expect(ChunkyPNG::Image).to receive(:new)
.once
.with(174, 174, 4294967295)
.and_return(mockImage)
RQRCode::QRCode.new("png").as_png(
file: "some/path",
color: [0, 0, 0]
)
expect(ChunkyPNG).to have_received(:Color).with(0, 0, 0).once
expect(ChunkyPNG).to have_received(:Color).with("white").once
end
it "should handle a green 'fill'" do
expect(ChunkyPNG::Image).to receive(:new)
.once
.with(174, 174, 8388863)
.and_return(mockImage)
RQRCode::QRCode.new("png").as_png(
file: "some/path",
fill: "green"
)
expect(ChunkyPNG).to have_received(:Color).with("black").once
expect(ChunkyPNG).to have_received(:Color).with("green").once
end
it "should handle an rgb 'fill'" do
expect(ChunkyPNG::Image).to receive(:new)
.once
.with(174, 174, 4294967295)
.and_return(mockImage)
RQRCode::QRCode.new("png").as_png(
file: "some/path",
fill: [255, 255, 255]
)
expect(ChunkyPNG).to have_received(:Color).with("black").once
expect(ChunkyPNG).to have_received(:Color).with(255, 255, 255).once
end
end
it "should not handle nonsense color " do
expect {
RQRCode::QRCode.new("png").as_png(
file: "some/path",
color: "madeupcolor"
)
}.to raise_error(ArgumentError, "Unknown color name madeupcolor!")
end
it "should not handle nonsense fill " do
expect {
RQRCode::QRCode.new("png").as_png(
file: "some/path",
fill: "madeupcolor"
)
}.to raise_error(ArgumentError, "Unknown color name madeupcolor!")
end
context "with file save and constaints" do
it "should export using the correct defaults" do
expect(ChunkyPNG::Image).to receive(:new)
.once
.with(174, 174, 4294967295)
.and_return(mockImage)
expect(mockImage).to receive(:save)
.once
.with("some/path", {bit_depth: 1, color_mode: 0})
RQRCode::QRCode.new("png").as_png(
file: "some/path"
)
end
it "should export using custom constraints" do
expect(ChunkyPNG::Image).to receive(:new)
.once
.with(174, 174, 4294967295)
.and_return(mockImage)
expect(mockImage).to receive(:save)
.once
.with("some/path", {
bit_depth: 8,
color_mode: 2,
interlace: true,
compression: 5
})
RQRCode::QRCode.new("png").as_png(
color_mode: ChunkyPNG::COLOR_TRUECOLOR,
bit_depth: 8,
file: "some/path",
color: "red",
interlace: true,
compression: 5
)
end
it "should save" do
qrcode = RQRCode::QRCode.new("http://github.com/")
png = qrcode.as_png(
bit_depth: 1,
border_modules: 4,
color_mode: ChunkyPNG::COLOR_GRAYSCALE,
color: "black",
file: nil,
fill: "white",
module_px_size: 6,
resize_exactly_to: false,
resize_gte_to: false,
size: 120
)
IO.binwrite("/tmp/github-qrcode.png", png.to_s)
expect(IO.binread("/tmp/github-qrcode.png")).to eq png.to_s
end
end
end
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