add URI to resource load error

[0xB10C]

Previously, only ERROR failed to fetch remote resource: Forbidden would be shown when a resource failed to load. In my case, a tweet's author I was embedding using the twitter shortcode switched his profile to private which resulted in my blog failing to build. To figure out where the failure originates, I added the log to the error message. This should be useful for others too.

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[0xB10C]

The CI failure looked unrelated (timeout during CI environment setup). I force-pushed to retrigger the CI, but it requires approval again.

[0xB10C]

This CI failure looked very related. There seems to be a test that includes the output of a resource load error. Updated that test to match the changes.

error for future refference

CI log

--- FAIL: TestResourceChainBasic (0.08s)
    resource_chain_test.go:103: Test run 0
    resource_chain_test.go:106: 
        error:
          no substring match found
        comment:
          FAILED REMOTE ERROR DETAILS CONTENT: |failed to fetch remote resource: Not Implemented|Body: { msg: failed } not in: 
          
          
          
          
          
          
          <script src="/livereload.js?mindelay=10&amp;v=2&amp;port=&amp;path=livereload" data-no-instant defer></script>HELLO: /hello.html|/hello.fea61a7e7ba8eaf0c4a60a871f68ec8fc044457e12b8f602245eedee623fb063f0e88e47ccf748107485af995911cbda25493d4c7faa824014437cf8a0aaa1a4.min.375690f1152af3649ca0eda5a0686a0bc50a279c2b7fb1af73da088727f65d96.html|<h1>Hello World!</h1>
          
          
          
          
          
          SUNSET: /images/sunset.jpg|/images/sunset.a9bf1d944e19c0f382e0d8f51de690f7d0bc8fa97390c4242a86c3e5c0737e71.jpg|900|90587
          FIT: /images/sunset.jpg|/images/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_200x200_fit_q75_box.jpg|200
          CSS integrity Data first: sha256-od9YaHw8nMOL8mUy97Sy8sKwMV3N4hI3aVmZXATxH&#43;8= /styles.min.a1df58687c3c9cc38bf26532f7b4b2f2c2b0[315](https://github.com/gohugoio/hugo/actions/runs/8975174217/job/24650750324?pr=12271#step:15:316)dcde212376959995c04f11fef.css
          CSS integrity Data last:  /styles2.min.1cfc52986836405d37f9998a63fd6dd8608e8c410e5e3db1daaa30f78bc273ba.css sha256-HPxSmGg2QF03&#43;ZmKY/1t2GCOjEEOXj2x2qow94vCc7o=
          
          
          
          
          
          
          
          
          
          SUNSET REMOTE: /sunset_8772799889021172246.jpg|/sunset_8772799889021172246.a9bf1d944e19c0f382e0d8f51de690f7d0bc8fa97390c4242a86c3e5c0737e71.jpg|900|90587
          FIT REMOTE: /sunset_8772799889021172246.jpg|/sunset_8772799889021172246_hu59e56ffff1bc1d8d122b1403d34e039f_90587_200x200_fit_q75_box.jpg|200
          REMOTE NOT FOUND: OK
          LOCAL NOT FOUND: OK
          PRINT PROTOCOL ERROR1: error calling resources.GetRemote: Get "gopher://example.org": unsupported protocol scheme "gopher"
          PRINT PROTOCOL ERROR2: error calling resources.GetRemote: Get "gopher://example.org": unsupported protocol scheme "gopher"
          PRINT PROTOCOL ERROR DETAILS: Err: error calling resources.GetRemote: Get "gopher://example.org": unsupported protocol scheme "gopher"||
          FAILED REMOTE ERROR DETAILS CONTENT: |failed to fetch remote resource from &#39;http://127.0.0.1:42757/fail.jpg&#39;: Not Implemented|Body: { msg: failed }
          |StatusCode: 501|ContentLength: 16|ContentType: text/plain; charset=utf-8|
        container:
          "\n\n\n\n\n\n<script src=\"/livereload.js?mindelay=10&amp;v=2&amp;port=&amp;path=livereload\" data-no-instant defer></script>HELLO: /hello.html|/hello.fea61a7e7ba8eaf0c4a60a871f68ec8fc044457e12b8f602245eedee623fb063f0e88e47ccf748107485af995911cbda25493d4c7faa824014437cf8a0aaa1a4.min.375690f1152af3649ca0eda5a0686a0bc50a279c2b7fb1af73da088727f65d96.html|<h1>Hello World!</h1>\n\n\n\n\n\nSUNSET: /images/sunset.jpg|/images/sunset.a9bf1d944e19c0f382e0d8f51de690f7d0bc8fa97390c4242a86c3e5c0737e71.jpg|900|90587\nFIT: /images/sunset.jpg|/images/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_200x200_fit_q75_box.jpg|200\nCSS integrity Data first: sha256-od9YaHw8nMOL8mUy97Sy8sKwMV3N4hI3aVmZXATxH&#43;8= /styles.min.a1df58687c3c9cc38bf26532f7b4b2f2c2b0315dcde212376959995c04f11fef.css\nCSS integrity Data last:  /styles2.min.1cfc52986836405d37f9998a63fd6dd8608e8c410e5e3db1daaa30f78bc273ba.css sha256-HPxSmGg2QF03&#43;ZmKY/1t2GCOjEEOXj2x2qow94vCc7o=\n\n\n\n\n\n\n\n\n\nSUNSET REMOTE: /sunset_8772799889021172246.jpg|/sunset_8772799889021172246.a9bf1d944e19c0f382e0d8f51de690f7d0bc8fa97390c4242a86c3e5c0737e71.jpg|900|90587\nFIT REMOTE: /sunset_8772799889021172246.jpg|/sunset_8772799889021172246_hu59e56ffff1bc1d8d122b1403d34e039f_90587_200x200_fit_q75_box.jpg|200\nREMOTE NOT FOUND: OK\nLOCAL NOT FOUND: OK\nPRINT PROTOCOL ERROR1: error calling resources.GetRemote: Get \"gopher://example.org\": unsupported protocol scheme \"gopher\"\nPRINT PROTOCOL ERROR2: error calling resources.GetRemote: Get \"gopher://example.org\": unsupported protocol scheme \"gopher\"\nPRINT PROTOCOL ERROR DETAILS: Err: error calling resources.GetRemote: Get \"gopher://example.org\": unsupported protocol scheme \"gopher\"||\nFAILED REMOTE ERROR DETAILS CONTENT: |failed to fetch remote resource from &#39;http://127.0.0.1:42757/fail.jpg&#39;: Not Implemented|Body: { msg: failed }\n|StatusCode: 501|ContentLength: 16|ContentType: text/plain; charset=utf-8|\n"
        want:
          "FAILED REMOTE ERROR DETAILS CONTENT: |failed to fetch remote resource: Not Implemented|Body: { msg: failed }"
        stack:
          /home/runner/work/hugo/hugo/hugolib/testhelpers_test.go:756
            s.Assert(content, qt.Contains, match, qt.Commentf(match+" not in: \n"+content))
          /home/runner/work/hugo/hugo/hugolib/resource_chain_test.go:106
            b.AssertFileContent("public/index.html",
                fmt.Sprintf(`
            SUNSET: /images/sunset.jpg|/images/sunset.a9bf1d944e19c0f382e0d8f51de690f7d0bc8fa97390c4242a86c3e5c0737e71.jpg|900|90587
            FIT: /images/sunset.jpg|/images/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_200x200_fit_q75_box.jpg|200
            CSS integrity Data first: sha256-od9YaHw8nMOL8mUy97Sy8sKwMV3N4hI3aVmZXATxH&#43;8= /styles.min.a1df58687c3c9cc38bf26532f7b4b2f2c2b0315dcde212376959995c04f11fef.css
            CSS integrity Data last:  /styles2.min.1cfc52986836405d37f9998a63fd6dd8608e8c410e5e3db1daaa30f78bc273ba.css sha256-HPxSmGg2QF03&#43;ZmKY/1t2GCOjEEOXj2x2qow94vCc7o=
            
            SUNSET REMOTE: /sunset_%[1]s.jpg|/sunset_%[1]s.a9bf1d944e19c0f382e0d8f51de690f7d0bc8fa97390c4242a86c3e5c0737e71.jpg|900|90587
            FIT REMOTE: /sunset_%[1]s.jpg|/sunset_%[1]s_hu59e56ffff1bc1d8d122b1403d34e039f_90587_200x200_fit_q75_box.jpg|200
            REMOTE NOT FOUND: OK
            LOCAL NOT FOUND: OK
            PRINT PROTOCOL ERROR DETAILS: Err: error calling resources.GetRemote: Get "gopher://example.org": unsupported protocol scheme "gopher"||
            FAILED REMOTE ERROR DETAILS CONTENT: |failed to fetch remote resource: Not Implemented|Body: { msg: failed }
            |StatusCode: 501|ContentLength: 16|ContentType: text/plain; charset=utf-8|
            
            
            `, identity.HashString(ts.URL+"/sunset.jpg", map[string]any{})))

[0xB10C]

Rebased on master and addressed conflicts. Would be nice to get this merged.

If there's no interest in this PR, feel free to close it.