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bin
bin
book
book
example_app
example_app
release
release
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md

Repository files navigation

Testing Rails

A book about testing Rails applications the thoughtbot way.

Reading the Book

You can find the current release in a variety of formats under the release directory. To view older releases, check out a specific Git tag.

Providing Feedback

Please provide feedback via GitHub.

Paperback

We use Paperback (internal to thoughtbot) for generating eBooks. To build the book, follow the instructions for setting up Paperback and be sure to have Docker running.

Building the book

To build the book (for inspecting compiled output):

$ bin/build

Releasing an update

We're using tags and releases to track milestones in book updates.

The release script builds the project, moves the built files into /release, and bumps the git tag:

$ bin/release

Build a zip to upload to Gumroad and attach it to the GitHub release:

$ bin/build-zip

Updating the sample.pdf

Build and upload to http://thoughtbot.com/testing-rails-sample.pdf by updating the website repo (samples are in public/).

Contributors

Thank you to all who've contributed so far!

About

Source code for the Testing Rails book

Topics

book

Resources

Readme
License

Code of conduct

Code of conduct
Activity
Custom properties

Stars

289 stars

Watchers

406 watching

Forks

47 forks
Report repository

Releases

Sponsor this project

Packages

Used by

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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bin
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LICENSE
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README.md
Repository files navigation
Testing Rails
A book about testing Rails applications the thoughtbot way.
Reading the Book
You can find the current release in a variety of formats under the release
directory. To view older releases, check out a specific Git tag.
Providing Feedback
Please provide feedback via GitHub.
Paperback
We use Paperback (internal to thoughtbot) for generating eBooks. To build
the book, follow the instructions for setting up Paperback and be sure to have
Docker running.
Building the book
To build the book (for inspecting compiled output):
$ bin/build

Releasing an update
We're using tags and releases to track milestones in book updates.
The release script builds the project, moves the built files into
/release, and bumps the git tag:
$ bin/release

Build a zip to upload to Gumroad and attach it to the GitHub release:
$ bin/build-zip

Updating the sample.pdf
Build and upload to http://thoughtbot.com/testing-rails-sample.pdf by
updating the website repo (samples are in public/).
Contributors
Thank you to all who've contributed so far!
About
Source code for the Testing Rails book
Topics
book
Resources
Readme
License
Code of conduct
Code of conduct
Activity
Custom properties
Stars
289 stars
Watchers
406 watching
Forks
47 forks
Report repository
Releases
Sponsor this project
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Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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125 Commits
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NameName
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bin
bin
book
book
example_app
example_app
release
release
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
Repository files navigation
Testing Rails
A book about testing Rails applications the thoughtbot way.
Reading the Book
You can find the current release in a variety of formats under the release
directory. To view older releases, check out a specific Git tag.
Providing Feedback
Please provide feedback via GitHub.
Paperback
We use Paperback (internal to thoughtbot) for generating eBooks. To build
the book, follow the instructions for setting up Paperback and be sure to have
Docker running.
Building the book
To build the book (for inspecting compiled output):
$ bin/build

Releasing an update
We're using tags and releases to track milestones in book updates.
The release script builds the project, moves the built files into
/release, and bumps the git tag:
$ bin/release

Build a zip to upload to Gumroad and attach it to the GitHub release:
$ bin/build-zip

Updating the sample.pdf
Build and upload to http://thoughtbot.com/testing-rails-sample.pdf by
updating the website repo (samples are in public/).
Contributors
Thank you to all who've contributed so far!
About
Source code for the Testing Rails book
Topics
book
Resources
Readme
License
Code of conduct
Code of conduct
Activity
Custom properties
Stars
289 stars
Watchers
406 watching
Forks
47 forks
Report repository
Releases
Sponsor this project
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Latest commit
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125 Commits
Folders and files
NameName
Last commit message
Last commit date
bin
bin
book
book
example_app
example_app
release
release
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
Repository files navigation
Testing Rails
A book about testing Rails applications the thoughtbot way.
Reading the Book
You can find the current release in a variety of formats under the release
directory. To view older releases, check out a specific Git tag.
Providing Feedback
Please provide feedback via GitHub.
Paperback
We use Paperback (internal to thoughtbot) for generating eBooks. To build
the book, follow the instructions for setting up Paperback and be sure to have
Docker running.
Building the book
To build the book (for inspecting compiled output):
$ bin/build

Releasing an update
We're using tags and releases to track milestones in book updates.
The release script builds the project, moves the built files into
/release, and bumps the git tag:
$ bin/release

Build a zip to upload to Gumroad and attach it to the GitHub release:
$ bin/build-zip

Updating the sample.pdf
Build and upload to http://thoughtbot.com/testing-rails-sample.pdf by
updating the website repo (samples are in public/).
Contributors
Thank you to all who've contributed so far!
About
Source code for the Testing Rails book
Topics
book
Resources
Readme
License
Code of conduct
Code of conduct
Activity
Custom properties
Stars
289 stars
Watchers
406 watching
Forks
47 forks
Report repository
Releases
Sponsor this project
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
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125 Commits
Folders and files
NameName
Last commit message
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bin
bin
book
book
example_app
example_app
release
release
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
Repository files navigation
Testing Rails
A book about testing Rails applications the thoughtbot way.
Reading the Book
You can find the current release in a variety of formats under the release
directory. To view older releases, check out a specific Git tag.
Providing Feedback
Please provide feedback via GitHub.
Paperback
We use Paperback (internal to thoughtbot) for generating eBooks. To build
the book, follow the instructions for setting up Paperback and be sure to have
Docker running.
Building the book
To build the book (for inspecting compiled output):
$ bin/build

Releasing an update
We're using tags and releases to track milestones in book updates.
The release script builds the project, moves the built files into
/release, and bumps the git tag:
$ bin/release

Build a zip to upload to Gumroad and attach it to the GitHub release:
$ bin/build-zip

Updating the sample.pdf
Build and upload to http://thoughtbot.com/testing-rails-sample.pdf by
updating the website repo (samples are in public/).
Contributors
Thank you to all who've contributed so far!
About
Source code for the Testing Rails book
Topics
book
Resources
Readme
License
Code of conduct
Code of conduct
Activity
Custom properties
Stars
289 stars
Watchers
406 watching
Forks
47 forks
Report repository
Releases
Sponsor this project
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Latest commit
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125 Commits
Folders and files
NameName
Last commit message
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bin
bin
book
book
example_app
example_app
release
release
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
Repository files navigation
Testing Rails
A book about testing Rails applications the thoughtbot way.
Reading the Book
You can find the current release in a variety of formats under the release
directory. To view older releases, check out a specific Git tag.
Providing Feedback
Please provide feedback via GitHub.
Paperback
We use Paperback (internal to thoughtbot) for generating eBooks. To build
the book, follow the instructions for setting up Paperback and be sure to have
Docker running.
Building the book
To build the book (for inspecting compiled output):
$ bin/build

Releasing an update
We're using tags and releases to track milestones in book updates.
The release script builds the project, moves the built files into
/release, and bumps the git tag:
$ bin/release

Build a zip to upload to Gumroad and attach it to the GitHub release:
$ bin/build-zip

Updating the sample.pdf
Build and upload to http://thoughtbot.com/testing-rails-sample.pdf by
updating the website repo (samples are in public/).
Contributors
Thank you to all who've contributed so far!
About
Source code for the Testing Rails book
Topics
book
Resources
Readme
License
Code of conduct
Code of conduct
Activity
Custom properties
Stars
289 stars
Watchers
406 watching
Forks
47 forks
Report repository
Releases
Sponsor this project
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Latest commit
History
125 Commits
Folders and files
NameName
Last commit message
Last commit date
bin
bin
book
book
example_app
example_app
release
release
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
Repository files navigation
Testing Rails
A book about testing Rails applications the thoughtbot way.
Reading the Book
You can find the current release in a variety of formats under the release
directory. To view older releases, check out a specific Git tag.
Providing Feedback
Please provide feedback via GitHub.
Paperback
We use Paperback (internal to thoughtbot) for generating eBooks. To build
the book, follow the instructions for setting up Paperback and be sure to have
Docker running.
Building the book
To build the book (for inspecting compiled output):
$ bin/build

Releasing an update
We're using tags and releases to track milestones in book updates.
The release script builds the project, moves the built files into
/release, and bumps the git tag:
$ bin/release

Build a zip to upload to Gumroad and attach it to the GitHub release:
$ bin/build-zip

Updating the sample.pdf
Build and upload to http://thoughtbot.com/testing-rails-sample.pdf by
updating the website repo (samples are in public/).
Contributors
Thank you to all who've contributed so far!
About
Source code for the Testing Rails book
Topics
book
Resources
Readme
License
Code of conduct
Code of conduct
Activity
Custom properties
Stars
289 stars
Watchers
406 watching
Forks
47 forks
Report repository
Releases
Sponsor this project
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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BranchesTags
Latest commit
History
125 Commits
Folders and files
NameName
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bin
bin
book
book
example_app
example_app
release
release
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
Repository files navigation
Testing Rails
A book about testing Rails applications the thoughtbot way.
Reading the Book
You can find the current release in a variety of formats under the release
directory. To view older releases, check out a specific Git tag.
Providing Feedback
Please provide feedback via GitHub.
Paperback
We use Paperback (internal to thoughtbot) for generating eBooks. To build
the book, follow the instructions for setting up Paperback and be sure to have
Docker running.
Building the book
To build the book (for inspecting compiled output):
$ bin/build

Releasing an update
We're using tags and releases to track milestones in book updates.
The release script builds the project, moves the built files into
/release, and bumps the git tag:
$ bin/release

Build a zip to upload to Gumroad and attach it to the GitHub release:
$ bin/build-zip

Updating the sample.pdf
Build and upload to http://thoughtbot.com/testing-rails-sample.pdf by
updating the website repo (samples are in public/).
Contributors
Thank you to all who've contributed so far!
About
Source code for the Testing Rails book
Topics
book
Resources
Readme
License
Code of conduct
Code of conduct
Activity
Custom properties
Stars
289 stars
Watchers
406 watching
Forks
47 forks
Report repository
Releases
Sponsor this project
Packages
Used by
Contributors
Languages