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test(chromium): cover header and footer image deduplication
This commit is contained in:
Antonio Pauletich
committed by
Julien Neuhart
Julien Neuhart
parent
cc9cd5d82d
commit
c83dbd7baf
@@ -25,7 +25,7 @@ Available tags:
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| Group | Tags |
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| ----------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| Chromium | `chromium`, `chromium-concurrent`, `chromium-convert-html`, `chromium-convert-markdown`, `chromium-convert-url`, `chromium-screenshot-html`, `chromium-screenshot-markdown`, `chromium-screenshot-url`, `chromium-ssrf` |
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| Chromium | `chromium`, `chromium-concurrent`, `chromium-convert-html`, `chromium-image-deduplication`, `chromium-convert-markdown`, `chromium-convert-url`, `chromium-screenshot-html`, `chromium-screenshot-markdown`, `chromium-screenshot-url`, `chromium-ssrf` |
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| LibreOffice | `libreoffice`, `libreoffice-convert`, `libreoffice-ssrf` |
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| PDF Engines | `pdfengines`, `pdfengines-convert`, `pdfengines-merge`, `merge`, `pdfengines-split`, `split`, `pdfengines-flatten`, `flatten`, `pdfengines-optimize`, `optimize`, `pdfengines-rotate`, `rotate`, `pdfengines-embed`, `embed`, `pdfengines-encrypt`, `encrypt`, `pdfengines-watermark`, `watermark`, `pdfengines-stamp`, `stamp`, `pdfengines-metadata`, `metadata`, `pdfengines-bookmarks`, `bookmarks` |
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| Infra | `health`, `debug`, `root`, `version`, `output-filename`, `prometheus-metrics`, `webhook`, `download-from` |
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@@ -75,6 +75,7 @@ Available tags:
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- `the (response|webhook request) PDF(s) (should|should NOT) allow "<action>"` (actions: `printing`, `copying`, `modifying`, `annotating`)
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- `the (response|webhook request) PDF(s) (should|should NOT) have the "<filename>" file embedded`
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- `the "<name>" PDF should have <N> image(s)`
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- `the "<name>" PDF should reuse <N> image XObject(s) across <P> page(s)` (checks image appearances on every page and distinct PDF object IDs)
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- `the Gotenberg container (should|should NOT) log the following entries:` (table of log substrings)
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- `all concurrent response status codes should be <code>`
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- `all concurrent responses should have <N> PDF(s)`
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@@ -0,0 +1,57 @@
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@chromium
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@chromium-convert-html
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@chromium-image-deduplication
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Feature: Chromium header and footer image deduplication
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# See: https://github.com/gotenberg/gotenberg/issues/1077.
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# See: https://github.com/gotenberg/gotenberg/issues/1669.
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# The PNG must appear on every page, but its image XObject must be shared.
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Scenario: POST /forms/chromium/convert/html (Header image reused across pages)
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Given I have a default Gotenberg container
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When I make a "POST" request to Gotenberg at the "/forms/chromium/convert/html" endpoint with the following form data and header(s):
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| files | testdata/page-1-html/index.html | file |
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| files | testdata/header-footer-image/header.html | file |
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| marginTop | 1 | field |
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| marginBottom | 1 | field |
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| Gotenberg-Output-Filename | header | header |
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Then the response status code should be 200
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Then the response header "Content-Type" should be "application/pdf"
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Then there should be 1 PDF(s) in the response
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Then the "header.pdf" PDF should have 1 page(s)
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Then the "header.pdf" PDF should reuse 1 image XObject(s) across 1 page(s)
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When I make a "POST" request to Gotenberg at the "/forms/chromium/convert/html" endpoint with the following form data and header(s):
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| files | testdata/pages-3-html/index.html | file |
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| files | testdata/header-footer-image/header.html | file |
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| marginTop | 1 | field |
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| marginBottom | 1 | field |
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| Gotenberg-Output-Filename | header | header |
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Then the response status code should be 200
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Then the response header "Content-Type" should be "application/pdf"
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Then there should be 1 PDF(s) in the response
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Then the "header.pdf" PDF should have 3 page(s)
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Then the "header.pdf" PDF should reuse 1 image XObject(s) across 3 page(s)
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Scenario: POST /forms/chromium/convert/html (Footer image reused across pages)
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Given I have a default Gotenberg container
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When I make a "POST" request to Gotenberg at the "/forms/chromium/convert/html" endpoint with the following form data and header(s):
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| files | testdata/page-1-html/index.html | file |
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| files | testdata/header-footer-image/footer.html | file |
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| marginTop | 1 | field |
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| marginBottom | 1 | field |
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| Gotenberg-Output-Filename | footer | header |
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Then the response status code should be 200
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Then the response header "Content-Type" should be "application/pdf"
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Then there should be 1 PDF(s) in the response
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Then the "footer.pdf" PDF should have 1 page(s)
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Then the "footer.pdf" PDF should reuse 1 image XObject(s) across 1 page(s)
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When I make a "POST" request to Gotenberg at the "/forms/chromium/convert/html" endpoint with the following form data and header(s):
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| files | testdata/pages-3-html/index.html | file |
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| files | testdata/header-footer-image/footer.html | file |
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| marginTop | 1 | field |
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| marginBottom | 1 | field |
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| Gotenberg-Output-Filename | footer | header |
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Then the response status code should be 200
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Then the response header "Content-Type" should be "application/pdf"
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Then there should be 1 PDF(s) in the response
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Then the "footer.pdf" PDF should have 3 page(s)
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Then the "footer.pdf" PDF should reuse 1 image XObject(s) across 3 page(s)
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72
test/integration/scenario/images.go
Normal file
72
test/integration/scenario/images.go
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@@ -0,0 +1,72 @@
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package scenario
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import (
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"context"
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"fmt"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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)
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func (s *scenario) thePdfShouldReuseImageXObjects(ctx context.Context, name string, images, pages int) error {
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path := filepath.Join(s.workdir, s.resp.Header().Get("Gotenberg-Trace"), name)
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if _, err := os.Stat(path); err != nil {
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return fmt.Errorf("stat PDF %q: %w", path, err)
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}
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cmd := []string{"pdfimages", "-list", filepath.Base(path)}
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output, err := execCommandInIntegrationToolsContainer(ctx, cmd, path)
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if err != nil {
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return fmt.Errorf("exec %q: %w", cmd, err)
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}
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return checkImageXObjectReuse(output, images, pages)
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}
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func checkImageXObjectReuse(output string, images, pages int) error {
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lines := strings.Split(strings.TrimSpace(output), "\n")
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if len(lines) < 2 || !strings.HasPrefix(strings.TrimSpace(lines[0]), "page") {
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return fmt.Errorf("invalid pdfimages -list output: %q", output)
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}
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objects := make(map[[2]int]struct{})
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imagesPerPage := make(map[int]int)
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for _, line := range lines[2:] {
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fields := strings.Fields(line)
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if len(fields) < 12 {
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return fmt.Errorf("invalid pdfimages -list row: %q", line)
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}
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page, err := strconv.Atoi(fields[0])
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if err != nil {
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return fmt.Errorf("parse image page %q: %w", fields[0], err)
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}
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if page < 1 || page > pages {
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return fmt.Errorf("image on page %d outside expected range 1-%d", page, pages)
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}
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// pdfimages lists appearances, including repeated references to the
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// same image. Columns 11 and 12 identify the underlying PDF object.
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var ref [2]int
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for i := range ref {
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ref[i], err = strconv.Atoi(fields[10+i])
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if err != nil {
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return fmt.Errorf("parse image object ID in %q: %w", line, err)
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}
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}
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objects[ref] = struct{}{}
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imagesPerPage[page]++
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}
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for page := 1; page <= pages; page++ {
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if imagesPerPage[page] != images {
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return fmt.Errorf("expected %d image appearance(s) on page %d, but actual is %d", images, page, imagesPerPage[page])
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}
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}
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if len(objects) != images {
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return fmt.Errorf("expected %d unique image XObject(s) shared across %d page(s), but actual is %d", images, pages, len(objects))
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}
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return nil
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}
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106
test/integration/scenario/images_test.go
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106
test/integration/scenario/images_test.go
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@@ -0,0 +1,106 @@
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package scenario
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import (
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"fmt"
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"strings"
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"testing"
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)
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func TestCheckImageXObjectReuse(t *testing.T) {
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t.Parallel()
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const header = `page num type width height color comp bpc enc interp object ID x-ppi y-ppi size ratio
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--------------------------------------------------------------------------------------------
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`
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imageRow := func(page, object, generation int) string {
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return fmt.Sprintf("%d %d image 32 32 rgb 3 8 image no %d %d 96 96 3104B 101%%\n", page, page-1, object, generation)
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}
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tests := []struct {
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name string
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output string
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pages int
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wantErr string
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}{
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{
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name: "one page baseline",
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output: header + imageRow(1, 7, 0),
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pages: 1,
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},
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{
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name: "three pages share one image object",
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output: header + imageRow(1, 7, 0) + imageRow(2, 7, 0) + imageRow(3, 7, 0),
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pages: 3,
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},
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{
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name: "regression embeds a different object per page",
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output: header + imageRow(1, 7, 0) + imageRow(2, 8, 0) + imageRow(3, 9, 0),
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pages: 3,
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wantErr: "expected 1 unique image XObject(s) shared across 3 page(s), but actual is 3",
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},
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{
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name: "object generation is part of its identity",
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output: header + imageRow(1, 7, 0) + imageRow(2, 7, 1) + imageRow(3, 7, 0),
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pages: 3,
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wantErr: "expected 1 unique image XObject(s) shared across 3 page(s), but actual is 2",
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},
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{
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name: "image missing from a page",
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output: header + imageRow(1, 7, 0) + imageRow(3, 7, 0),
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pages: 3,
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wantErr: "expected 1 image appearance(s) on page 2, but actual is 0",
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},
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{
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name: "no image cannot pass",
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output: header,
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pages: 1,
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wantErr: "expected 1 image appearance(s) on page 1, but actual is 0",
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},
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{
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name: "repeated image only on first page cannot pass",
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output: header + imageRow(1, 7, 0) + imageRow(1, 7, 0) + imageRow(1, 7, 0),
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pages: 3,
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wantErr: "expected 1 image appearance(s) on page 1, but actual is 3",
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},
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{
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name: "image on unexpected page",
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output: header + imageRow(1, 7, 0) + imageRow(2, 7, 0),
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pages: 1,
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wantErr: "image on page 2 outside expected range 1-1",
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},
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{
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name: "tool error cannot pass",
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output: "Syntax Error: Couldn't find trailer dictionary",
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pages: 1,
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wantErr: "invalid pdfimages -list output:",
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},
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{
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name: "malformed image row",
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output: header + "1 0 image\n",
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pages: 1,
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wantErr: "invalid pdfimages -list row:",
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},
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{
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name: "inline image has no reusable object ID",
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output: header + "1 0 image 32 32 rgb 3 8 image no [inline] - 96 96 3104B 101%\n",
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pages: 1,
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wantErr: "parse image object ID",
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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t.Parallel()
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err := checkImageXObjectReuse(tt.output, 1, tt.pages)
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if tt.wantErr == "" {
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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return
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}
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if err == nil || !strings.Contains(err.Error(), tt.wantErr) {
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t.Fatalf("expected error containing %q, got %v", tt.wantErr, err)
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}
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})
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}
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}
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@@ -1799,6 +1799,7 @@ func InitializeScenario(ctx *godog.ScenarioContext) {
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ctx.Then(`^the "([^"]*)" PDF (should|should NOT) have the following content at page (\d+):$`, s.thePdfShouldHaveTheFollowingContentAtPage)
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ctx.Then(`^the "([^"]*)" PDF (should|should NOT) have content matching "([^"]*)" at page (\d+)$`, s.thePdfShouldHaveContentMatchingAtPage)
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ctx.Then(`^the "([^"]*)" PDF should have (\d+) image\(s\)$`, s.thePdfShouldHaveImages)
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ctx.Then(`^the "([^"]*)" PDF should reuse (\d+) image XObject\(s\) across (\d+) page\(s\)$`, s.thePdfShouldReuseImageXObjects)
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ctx.Then(`^the "([^"]*)" image should be (\d+)x(\d+) pixels$`, s.theImageShouldBePixels)
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ctx.Then(`^the "([^"]*)" image pixel at (\d+),(\d+) should be "([^"]*)"$`, s.theImagePixelShouldBe)
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ctx.Then(`^the "([^"]*)" file size should be (less|greater) than (\d+) KB$`, s.theFileSizeShouldBe)
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15
test/integration/testdata/header-footer-image/footer.html
vendored
Normal file
15
test/integration/testdata/header-footer-image/footer.html
vendored
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<!doctype html>
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<html lang="en">
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<head>
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<meta charset="utf-8" />
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</head>
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<body style="margin: 0; width: 100%">
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<!-- An opaque RGB PNG avoids a separate alpha-mask image XObject. -->
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<img
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alt="Regression test logo"
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width="32"
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height="32"
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15
test/integration/testdata/header-footer-image/header.html
vendored
Normal file
15
test/integration/testdata/header-footer-image/header.html
vendored
Normal file
@@ -0,0 +1,15 @@
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||||
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|
||||
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|
||||
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|
||||
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||||
<body style="margin: 0; width: 100%">
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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||||
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|
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|
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|
||||
Reference in New Issue
Block a user