diff --git a/Chapter08/enabling-travis/.travis.yml b/Chapter08/enabling-travis/.travis.yml
deleted file mode 100644
index 92db52c..0000000
--- a/Chapter08/enabling-travis/.travis.yml
+++ /dev/null
@@ -1,3 +0,0 @@
-language: node_js
-node_js:
-  - 14
diff --git a/Chapter08/enabling-travis/package-lock.json b/Chapter08/enabling-travis/package-lock.json
deleted file mode 100644
index 6ee419f..0000000
--- a/Chapter08/enabling-travis/package-lock.json
+++ /dev/null
@@ -1,467 +0,0 @@
-{
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diff --git a/Chapter08/enabling-travis/test/test.js b/Chapter08/enabling-travis/test/test.js
deleted file mode 100644
index 7aaeecb..0000000
--- a/Chapter08/enabling-travis/test/test.js
+++ /dev/null
@@ -1,12 +0,0 @@
-const test = require("tape");
-
-test("test integer addition", function (t) {
-  t.plan(1);
-  t.equal(1 + 1, 2);
-});
-
-test("test string addition", function (t) {
-  t.plan(1);
-  // Expected to fail
-  t.equal("1" + "1", 2);
-});
diff --git a/Chapter08/stubbing-http-requests/test/test.js b/Chapter08/stubbing-http-requests/test/test.js
index d69d156..5426105 100644
--- a/Chapter08/stubbing-http-requests/test/test.js
+++ b/Chapter08/stubbing-http-requests/test/test.js
@@ -9,7 +9,7 @@ test("Get GitHub user by username", async function (t) {
 
   sinon.stub(github, "getGitHubUser").returns(octokitUserData);
   
-  const githubUser = await github.getGitHubUser("Octokit");
+  const githubUser = await github.getGitHubUser("bethgriggs");
 
   t.equal(githubUser.id, 3430433);
   t.equal(githubUser.login, "octokit");
diff --git a/Chapter08/testing-with-jest/coverage/clover.xml b/Chapter08/testing-with-jest/coverage/clover.xml
new file mode 100644
index 0000000..bee0518
--- /dev/null
+++ b/Chapter08/testing-with-jest/coverage/clover.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<coverage generated="1593565286083" clover="3.2.0">
+  <project timestamp="1593565286083" name="All files">
+    <metrics statements="2" coveredstatements="2" conditionals="0" coveredconditionals="0" methods="1" coveredmethods="1" elements="3" coveredelements="3" complexity="0" loc="2" ncloc="2" packages="1" files="1" classes="1"/>
+    <file name="uppercase.js" path="/Users/bethgriggs/Node-Cookbook/Chapter08/testing-with-jest/uppercase.js">
+      <metrics statements="2" coveredstatements="2" conditionals="0" coveredconditionals="0" methods="1" coveredmethods="1"/>
+      <line num="1" count="1" type="stmt"/>
+      <line num="2" count="1" type="stmt"/>
+    </file>
+  </project>
+</coverage>
diff --git a/Chapter08/testing-with-jest/coverage/coverage-final.json b/Chapter08/testing-with-jest/coverage/coverage-final.json
new file mode 100644
index 0000000..6c86ac5
--- /dev/null
+++ b/Chapter08/testing-with-jest/coverage/coverage-final.json
@@ -0,0 +1,2 @@
+{"/Users/bethgriggs/Node-Cookbook/Chapter08/testing-with-jest/uppercase.js": {"path":"/Users/bethgriggs/Node-Cookbook/Chapter08/testing-with-jest/uppercase.js","statementMap":{"0":{"start":{"line":1,"column":0},"end":{"line":3,"column":2}},"1":{"start":{"line":2,"column":2},"end":{"line":2,"column":30}}},"fnMap":{"0":{"name":"(anonymous_0)","decl":{"start":{"line":1,"column":17},"end":{"line":1,"column":18}},"loc":{"start":{"line":1,"column":29},"end":{"line":3,"column":1}},"line":1}},"branchMap":{},"s":{"0":1,"1":1},"f":{"0":1},"b":{},"_coverageSchema":"1a1c01bbd47fc00a2c39e90264f33305004495a9","hash":"4681eeca6d557aa8d2e52343f597c58417a4bbf7"}
+}
diff --git a/Chapter08/testing-with-jest/coverage/lcov-report/base.css b/Chapter08/testing-with-jest/coverage/lcov-report/base.css
new file mode 100644
index 0000000..f418035
--- /dev/null
+++ b/Chapter08/testing-with-jest/coverage/lcov-report/base.css
@@ -0,0 +1,224 @@
+body, html {
+  margin:0; padding: 0;
+  height: 100%;
+}
+body {
+    font-family: Helvetica Neue, Helvetica, Arial;
+    font-size: 14px;
+    color:#333;
+}
+.small { font-size: 12px; }
+*, *:after, *:before {
+  -webkit-box-sizing:border-box;
+     -moz-box-sizing:border-box;
+          box-sizing:border-box;
+  }
+h1 { font-size: 20px; margin: 0;}
+h2 { font-size: 14px; }
+pre {
+    font: 12px/1.4 Consolas, "Liberation Mono", Menlo, Courier, monospace;
+    margin: 0;
+    padding: 0;
+    -moz-tab-size: 2;
+    -o-tab-size:  2;
+    tab-size: 2;
+}
+a { color:#0074D9; text-decoration:none; }
+a:hover { text-decoration:underline; }
+.strong { font-weight: bold; }
+.space-top1 { padding: 10px 0 0 0; }
+.pad2y { padding: 20px 0; }
+.pad1y { padding: 10px 0; }
+.pad2x { padding: 0 20px; }
+.pad2 { padding: 20px; }
+.pad1 { padding: 10px; }
+.space-left2 { padding-left:55px; }
+.space-right2 { padding-right:20px; }
+.center { text-align:center; }
+.clearfix { display:block; }
+.clearfix:after {
+  content:'';
+  display:block;
+  height:0;
+  clear:both;
+  visibility:hidden;
+  }
+.fl { float: left; }
+@media only screen and (max-width:640px) {
+  .col3 { width:100%; max-width:100%; }
+  .hide-mobile { display:none!important; }
+}
+
+.quiet {
+  color: #7f7f7f;
+  color: rgba(0,0,0,0.5);
+}
+.quiet a { opacity: 0.7; }
+
+.fraction {
+  font-family: Consolas, 'Liberation Mono', Menlo, Courier, monospace;
+  font-size: 10px;
+  color: #555;
+  background: #E8E8E8;
+  padding: 4px 5px;
+  border-radius: 3px;
+  vertical-align: middle;
+}
+
+div.path a:link, div.path a:visited { color: #333; }
+table.coverage {
+  border-collapse: collapse;
+  margin: 10px 0 0 0;
+  padding: 0;
+}
+
+table.coverage td {
+  margin: 0;
+  padding: 0;
+  vertical-align: top;
+}
+table.coverage td.line-count {
+    text-align: right;
+    padding: 0 5px 0 20px;
+}
+table.coverage td.line-coverage {
+    text-align: right;
+    padding-right: 10px;
+    min-width:20px;
+}
+
+table.coverage td span.cline-any {
+    display: inline-block;
+    padding: 0 5px;
+    width: 100%;
+}
+.missing-if-branch {
+    display: inline-block;
+    margin-right: 5px;
+    border-radius: 3px;
+    position: relative;
+    padding: 0 4px;
+    background: #333;
+    color: yellow;
+}
+
+.skip-if-branch {
+    display: none;
+    margin-right: 10px;
+    position: relative;
+    padding: 0 4px;
+    background: #ccc;
+    color: white;
+}
+.missing-if-branch .typ, .skip-if-branch .typ {
+    color: inherit !important;
+}
+.coverage-summary {
+  border-collapse: collapse;
+  width: 100%;
+}
+.coverage-summary tr { border-bottom: 1px solid #bbb; }
+.keyline-all { border: 1px solid #ddd; }
+.coverage-summary td, .coverage-summary th { padding: 10px; }
+.coverage-summary tbody { border: 1px solid #bbb; }
+.coverage-summary td { border-right: 1px solid #bbb; }
+.coverage-summary td:last-child { border-right: none; }
+.coverage-summary th {
+  text-align: left;
+  font-weight: normal;
+  white-space: nowrap;
+}
+.coverage-summary th.file { border-right: none !important; }
+.coverage-summary th.pct { }
+.coverage-summary th.pic,
+.coverage-summary th.abs,
+.coverage-summary td.pct,
+.coverage-summary td.abs { text-align: right; }
+.coverage-summary td.file { white-space: nowrap;  }
+.coverage-summary td.pic { min-width: 120px !important;  }
+.coverage-summary tfoot td { }
+
+.coverage-summary .sorter {
+    height: 10px;
+    width: 7px;
+    display: inline-block;
+    margin-left: 0.5em;
+    background: url(sort-arrow-sprite.png) no-repeat scroll 0 0 transparent;
+}
+.coverage-summary .sorted .sorter {
+    background-position: 0 -20px;
+}
+.coverage-summary .sorted-desc .sorter {
+    background-position: 0 -10px;
+}
+.status-line {  height: 10px; }
+/* yellow */
+.cbranch-no { background: yellow !important; color: #111; }
+/* dark red */
+.red.solid, .status-line.low, .low .cover-fill { background:#C21F39 }
+.low .chart { border:1px solid #C21F39 }
+.highlighted,
+.highlighted .cstat-no, .highlighted .fstat-no, .highlighted .cbranch-no{
+  background: #C21F39 !important;
+}
+/* medium red */
+.cstat-no, .fstat-no, .cbranch-no, .cbranch-no { background:#F6C6CE }
+/* light red */
+.low, .cline-no { background:#FCE1E5 }
+/* light green */
+.high, .cline-yes { background:rgb(230,245,208) }
+/* medium green */
+.cstat-yes { background:rgb(161,215,106) }
+/* dark green */
+.status-line.high, .high .cover-fill { background:rgb(77,146,33) }
+.high .chart { border:1px solid rgb(77,146,33) }
+/* dark yellow (gold) */
+.status-line.medium, .medium .cover-fill { background: #f9cd0b; }
+.medium .chart { border:1px solid #f9cd0b; }
+/* light yellow */
+.medium { background: #fff4c2; }
+
+.cstat-skip { background: #ddd; color: #111; }
+.fstat-skip { background: #ddd; color: #111 !important; }
+.cbranch-skip { background: #ddd !important; color: #111; }
+
+span.cline-neutral { background: #eaeaea; }
+
+.coverage-summary td.empty {
+    opacity: .5;
+    padding-top: 4px;
+    padding-bottom: 4px;
+    line-height: 1;
+    color: #888;
+}
+
+.cover-fill, .cover-empty {
+  display:inline-block;
+  height: 12px;
+}
+.chart {
+  line-height: 0;
+}
+.cover-empty {
+    background: white;
+}
+.cover-full {
+    border-right: none !important;
+}
+pre.prettyprint {
+    border: none !important;
+    padding: 0 !important;
+    margin: 0 !important;
+}
+.com { color: #999 !important; }
+.ignore-none { color: #999; font-weight: normal; }
+
+.wrapper {
+  min-height: 100%;
+  height: auto !important;
+  height: 100%;
+  margin: 0 auto -48px;
+}
+.footer, .push {
+  height: 48px;
+}
diff --git a/Chapter08/testing-with-jest/coverage/lcov-report/block-navigation.js b/Chapter08/testing-with-jest/coverage/lcov-report/block-navigation.js
new file mode 100644
index 0000000..c7ff5a5
--- /dev/null
+++ b/Chapter08/testing-with-jest/coverage/lcov-report/block-navigation.js
@@ -0,0 +1,79 @@
+/* eslint-disable */
+var jumpToCode = (function init() {
+    // Classes of code we would like to highlight in the file view
+    var missingCoverageClasses = ['.cbranch-no', '.cstat-no', '.fstat-no'];
+
+    // Elements to highlight in the file listing view
+    var fileListingElements = ['td.pct.low'];
+
+    // We don't want to select elements that are direct descendants of another match
+    var notSelector = ':not(' + missingCoverageClasses.join('):not(') + ') > '; // becomes `:not(a):not(b) > `
+
+    // Selecter that finds elements on the page to which we can jump
+    var selector =
+        fileListingElements.join(', ') +
+        ', ' +
+        notSelector +
+        missingCoverageClasses.join(', ' + notSelector); // becomes `:not(a):not(b) > a, :not(a):not(b) > b`
+
+    // The NodeList of matching elements
+    var missingCoverageElements = document.querySelectorAll(selector);
+
+    var currentIndex;
+
+    function toggleClass(index) {
+        missingCoverageElements
+            .item(currentIndex)
+            .classList.remove('highlighted');
+        missingCoverageElements.item(index).classList.add('highlighted');
+    }
+
+    function makeCurrent(index) {
+        toggleClass(index);
+        currentIndex = index;
+        missingCoverageElements.item(index).scrollIntoView({
+            behavior: 'smooth',
+            block: 'center',
+            inline: 'center'
+        });
+    }
+
+    function goToPrevious() {
+        var nextIndex = 0;
+        if (typeof currentIndex !== 'number' || currentIndex === 0) {
+            nextIndex = missingCoverageElements.length - 1;
+        } else if (missingCoverageElements.length > 1) {
+            nextIndex = currentIndex - 1;
+        }
+
+        makeCurrent(nextIndex);
+    }
+
+    function goToNext() {
+        var nextIndex = 0;
+
+        if (
+            typeof currentIndex === 'number' &&
+            currentIndex < missingCoverageElements.length - 1
+        ) {
+            nextIndex = currentIndex + 1;
+        }
+
+        makeCurrent(nextIndex);
+    }
+
+    return function jump(event) {
+        switch (event.which) {
+            case 78: // n
+            case 74: // j
+                goToNext();
+                break;
+            case 66: // b
+            case 75: // k
+            case 80: // p
+                goToPrevious();
+                break;
+        }
+    };
+})();
+window.addEventListener('keydown', jumpToCode);
diff --git a/Chapter08/testing-with-jest/coverage/lcov-report/favicon.png b/Chapter08/testing-with-jest/coverage/lcov-report/favicon.png
new file mode 100644
index 0000000..6691817
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diff --git a/Chapter08/testing-with-jest/coverage/lcov-report/index.html b/Chapter08/testing-with-jest/coverage/lcov-report/index.html
new file mode 100644
index 0000000..05e2882
--- /dev/null
+++ b/Chapter08/testing-with-jest/coverage/lcov-report/index.html
@@ -0,0 +1,111 @@
+
+<!doctype html>
+<html lang="en">
+
+<head>
+    <title>Code coverage report for All files</title>
+    <meta charset="utf-8" />
+    <link rel="stylesheet" href="prettify.css" />
+    <link rel="stylesheet" href="base.css" />
+    <link rel="shortcut icon" type="image/x-icon" href="favicon.png" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <style type='text/css'>
+        .coverage-summary .sorter {
+            background-image: url(sort-arrow-sprite.png);
+        }
+    </style>
+</head>
+    
+<body>
+<div class='wrapper'>
+    <div class='pad1'>
+        <h1>All files</h1>
+        <div class='clearfix'>
+            
+            <div class='fl pad1y space-right2'>
+                <span class="strong">100% </span>
+                <span class="quiet">Statements</span>
+                <span class='fraction'>2/2</span>
+            </div>
+        
+            
+            <div class='fl pad1y space-right2'>
+                <span class="strong">100% </span>
+                <span class="quiet">Branches</span>
+                <span class='fraction'>0/0</span>
+            </div>
+        
+            
+            <div class='fl pad1y space-right2'>
+                <span class="strong">100% </span>
+                <span class="quiet">Functions</span>
+                <span class='fraction'>1/1</span>
+            </div>
+        
+            
+            <div class='fl pad1y space-right2'>
+                <span class="strong">100% </span>
+                <span class="quiet">Lines</span>
+                <span class='fraction'>2/2</span>
+            </div>
+        
+            
+        </div>
+        <p class="quiet">
+            Press <em>n</em> or <em>j</em> to go to the next uncovered block, <em>b</em>, <em>p</em> or <em>k</em> for the previous block.
+        </p>
+    </div>
+    <div class='status-line high'></div>
+    <div class="pad1">
+<table class="coverage-summary">
+<thead>
+<tr>
+   <th data-col="file" data-fmt="html" data-html="true" class="file">File</th>
+   <th data-col="pic" data-type="number" data-fmt="html" data-html="true" class="pic"></th>
+   <th data-col="statements" data-type="number" data-fmt="pct" class="pct">Statements</th>
+   <th data-col="statements_raw" data-type="number" data-fmt="html" class="abs"></th>
+   <th data-col="branches" data-type="number" data-fmt="pct" class="pct">Branches</th>
+   <th data-col="branches_raw" data-type="number" data-fmt="html" class="abs"></th>
+   <th data-col="functions" data-type="number" data-fmt="pct" class="pct">Functions</th>
+   <th data-col="functions_raw" data-type="number" data-fmt="html" class="abs"></th>
+   <th data-col="lines" data-type="number" data-fmt="pct" class="pct">Lines</th>
+   <th data-col="lines_raw" data-type="number" data-fmt="html" class="abs"></th>
+</tr>
+</thead>
+<tbody><tr>
+	<td class="file high" data-value="uppercase.js"><a href="uppercase.js.html">uppercase.js</a></td>
+	<td data-value="100" class="pic high">
+	<div class="chart"><div class="cover-fill cover-full" style="width: 100%"></div><div class="cover-empty" style="width: 0%"></div></div>
+	</td>
+	<td data-value="100" class="pct high">100%</td>
+	<td data-value="2" class="abs high">2/2</td>
+	<td data-value="100" class="pct high">100%</td>
+	<td data-value="0" class="abs high">0/0</td>
+	<td data-value="100" class="pct high">100%</td>
+	<td data-value="1" class="abs high">1/1</td>
+	<td data-value="100" class="pct high">100%</td>
+	<td data-value="2" class="abs high">2/2</td>
+	</tr>
+
+</tbody>
+</table>
+</div>
+                <div class='push'></div><!-- for sticky footer -->
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diff --git a/Chapter08/testing-with-jest/coverage/lcov-report/sort-arrow-sprite.png b/Chapter08/testing-with-jest/coverage/lcov-report/sort-arrow-sprite.png
new file mode 100644
index 0000000..03f704a
Binary files /dev/null and b/Chapter08/testing-with-jest/coverage/lcov-report/sort-arrow-sprite.png differ
diff --git a/Chapter08/testing-with-jest/coverage/lcov-report/sorter.js b/Chapter08/testing-with-jest/coverage/lcov-report/sorter.js
new file mode 100644
index 0000000..16de10c
--- /dev/null
+++ b/Chapter08/testing-with-jest/coverage/lcov-report/sorter.js
@@ -0,0 +1,170 @@
+/* eslint-disable */
+var addSorting = (function() {
+    'use strict';
+    var cols,
+        currentSort = {
+            index: 0,
+            desc: false
+        };
+
+    // returns the summary table element
+    function getTable() {
+        return document.querySelector('.coverage-summary');
+    }
+    // returns the thead element of the summary table
+    function getTableHeader() {
+        return getTable().querySelector('thead tr');
+    }
+    // returns the tbody element of the summary table
+    function getTableBody() {
+        return getTable().querySelector('tbody');
+    }
+    // returns the th element for nth column
+    function getNthColumn(n) {
+        return getTableHeader().querySelectorAll('th')[n];
+    }
+
+    // loads all columns
+    function loadColumns() {
+        var colNodes = getTableHeader().querySelectorAll('th'),
+            colNode,
+            cols = [],
+            col,
+            i;
+
+        for (i = 0; i < colNodes.length; i += 1) {
+            colNode = colNodes[i];
+            col = {
+                key: colNode.getAttribute('data-col'),
+                sortable: !colNode.getAttribute('data-nosort'),
+                type: colNode.getAttribute('data-type') || 'string'
+            };
+            cols.push(col);
+            if (col.sortable) {
+                col.defaultDescSort = col.type === 'number';
+                colNode.innerHTML =
+                    colNode.innerHTML + '<span class="sorter"></span>';
+            }
+        }
+        return cols;
+    }
+    // attaches a data attribute to every tr element with an object
+    // of data values keyed by column name
+    function loadRowData(tableRow) {
+        var tableCols = tableRow.querySelectorAll('td'),
+            colNode,
+            col,
+            data = {},
+            i,
+            val;
+        for (i = 0; i < tableCols.length; i += 1) {
+            colNode = tableCols[i];
+            col = cols[i];
+            val = colNode.getAttribute('data-value');
+            if (col.type === 'number') {
+                val = Number(val);
+            }
+            data[col.key] = val;
+        }
+        return data;
+    }
+    // loads all row data
+    function loadData() {
+        var rows = getTableBody().querySelectorAll('tr'),
+            i;
+
+        for (i = 0; i < rows.length; i += 1) {
+            rows[i].data = loadRowData(rows[i]);
+        }
+    }
+    // sorts the table using the data for the ith column
+    function sortByIndex(index, desc) {
+        var key = cols[index].key,
+            sorter = function(a, b) {
+                a = a.data[key];
+                b = b.data[key];
+                return a < b ? -1 : a > b ? 1 : 0;
+            },
+            finalSorter = sorter,
+            tableBody = document.querySelector('.coverage-summary tbody'),
+            rowNodes = tableBody.querySelectorAll('tr'),
+            rows = [],
+            i;
+
+        if (desc) {
+            finalSorter = function(a, b) {
+                return -1 * sorter(a, b);
+            };
+        }
+
+        for (i = 0; i < rowNodes.length; i += 1) {
+            rows.push(rowNodes[i]);
+            tableBody.removeChild(rowNodes[i]);
+        }
+
+        rows.sort(finalSorter);
+
+        for (i = 0; i < rows.length; i += 1) {
+            tableBody.appendChild(rows[i]);
+        }
+    }
+    // removes sort indicators for current column being sorted
+    function removeSortIndicators() {
+        var col = getNthColumn(currentSort.index),
+            cls = col.className;
+
+        cls = cls.replace(/ sorted$/, '').replace(/ sorted-desc$/, '');
+        col.className = cls;
+    }
+    // adds sort indicators for current column being sorted
+    function addSortIndicators() {
+        getNthColumn(currentSort.index).className += currentSort.desc
+            ? ' sorted-desc'
+            : ' sorted';
+    }
+    // adds event listeners for all sorter widgets
+    function enableUI() {
+        var i,
+            el,
+            ithSorter = function ithSorter(i) {
+                var col = cols[i];
+
+                return function() {
+                    var desc = col.defaultDescSort;
+
+                    if (currentSort.index === i) {
+                        desc = !currentSort.desc;
+                    }
+                    sortByIndex(i, desc);
+                    removeSortIndicators();
+                    currentSort.index = i;
+                    currentSort.desc = desc;
+                    addSortIndicators();
+                };
+            };
+        for (i = 0; i < cols.length; i += 1) {
+            if (cols[i].sortable) {
+                // add the click event handler on the th so users
+                // dont have to click on those tiny arrows
+                el = getNthColumn(i).querySelector('.sorter').parentElement;
+                if (el.addEventListener) {
+                    el.addEventListener('click', ithSorter(i));
+                } else {
+                    el.attachEvent('onclick', ithSorter(i));
+                }
+            }
+        }
+    }
+    // adds sorting functionality to the UI
+    return function() {
+        if (!getTable()) {
+            return;
+        }
+        cols = loadColumns();
+        loadData();
+        addSortIndicators();
+        enableUI();
+    };
+})();
+
+window.addEventListener('load', addSorting);
diff --git a/Chapter08/testing-with-jest/coverage/lcov-report/uppercase.js.html b/Chapter08/testing-with-jest/coverage/lcov-report/uppercase.js.html
new file mode 100644
index 0000000..ca42907
--- /dev/null
+++ b/Chapter08/testing-with-jest/coverage/lcov-report/uppercase.js.html
@@ -0,0 +1,89 @@
+
+<!doctype html>
+<html lang="en">
+
+<head>
+    <title>Code coverage report for uppercase.js</title>
+    <meta charset="utf-8" />
+    <link rel="stylesheet" href="prettify.css" />
+    <link rel="stylesheet" href="base.css" />
+    <link rel="shortcut icon" type="image/x-icon" href="favicon.png" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <style type='text/css'>
+        .coverage-summary .sorter {
+            background-image: url(sort-arrow-sprite.png);
+        }
+    </style>
+</head>
+    
+<body>
+<div class='wrapper'>
+    <div class='pad1'>
+        <h1><a href="index.html">All files</a> uppercase.js</h1>
+        <div class='clearfix'>
+            
+            <div class='fl pad1y space-right2'>
+                <span class="strong">100% </span>
+                <span class="quiet">Statements</span>
+                <span class='fraction'>2/2</span>
+            </div>
+        
+            
+            <div class='fl pad1y space-right2'>
+                <span class="strong">100% </span>
+                <span class="quiet">Branches</span>
+                <span class='fraction'>0/0</span>
+            </div>
+        
+            
+            <div class='fl pad1y space-right2'>
+                <span class="strong">100% </span>
+                <span class="quiet">Functions</span>
+                <span class='fraction'>1/1</span>
+            </div>
+        
+            
+            <div class='fl pad1y space-right2'>
+                <span class="strong">100% </span>
+                <span class="quiet">Lines</span>
+                <span class='fraction'>2/2</span>
+            </div>
+        
+            
+        </div>
+        <p class="quiet">
+            Press <em>n</em> or <em>j</em> to go to the next uncovered block, <em>b</em>, <em>p</em> or <em>k</em> for the previous block.
+        </p>
+    </div>
+    <div class='status-line high'></div>
+    <pre><table class="coverage">
+<tr><td class="line-count quiet"><a name='L1'></a><a href='#L1'>1</a>
+<a name='L2'></a><a href='#L2'>2</a>
+<a name='L3'></a><a href='#L3'>3</a>
+<a name='L4'></a><a href='#L4'>4</a></td><td class="line-coverage quiet"><span class="cline-any cline-yes">1x</span>
+<span class="cline-any cline-yes">1x</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">module.exports = (string) =&gt; {
+  return string.toUpperCase();
+};
+&nbsp;</pre></td></tr></table></pre>
+
+                <div class='push'></div><!-- for sticky footer -->
+            </div><!-- /wrapper -->
+            <div class='footer quiet pad2 space-top1 center small'>
+                Code coverage generated by
+                <a href="https://istanbul.js.org/" target="_blank">istanbul</a>
+                at Wed Jul 01 2020 02:01:26 GMT+0100 (British Summer Time)
+            </div>
+        </div>
+        <script src="prettify.js"></script>
+        <script>
+            window.onload = function () {
+                prettyPrint();
+            };
+        </script>
+        <script src="sorter.js"></script>
+        <script src="block-navigation.js"></script>
+    </body>
+</html>
+    
\ No newline at end of file
diff --git a/Chapter08/testing-with-jest/coverage/lcov.info b/Chapter08/testing-with-jest/coverage/lcov.info
new file mode 100644
index 0000000..5990cd5
--- /dev/null
+++ b/Chapter08/testing-with-jest/coverage/lcov.info
@@ -0,0 +1,13 @@
+TN:
+SF:uppercase.js
+FN:1,(anonymous_0)
+FNF:1
+FNH:1
+FNDA:1,(anonymous_0)
+DA:1,1
+DA:2,1
+LF:2
+LH:2
+BRF:0
+BRH:0
+end_of_record
diff --git a/Chapter08/testing-with-jest/package-lock.json b/Chapter08/testing-with-jest/package-lock.json
new file mode 100644
index 0000000..cd4d658
--- /dev/null
+++ b/Chapter08/testing-with-jest/package-lock.json
@@ -0,0 +1,4656 @@
+{
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+  "version": "1.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "@babel/code-frame": {
+      "version": "7.10.4",
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+      "dev": true,
+      "requires": {
+        "@babel/highlight": "^7.10.4"
+      }
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+    "@babel/core": {
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+      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.10.4.tgz",
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+          "dev": true
+        }
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+}
diff --git a/Chapter08/enabling-travis/package.json b/Chapter08/testing-with-jest/package.json
similarity index 59%
rename from Chapter08/enabling-travis/package.json
rename to Chapter08/testing-with-jest/package.json
index 6658120..255e4d0 100644
--- a/Chapter08/enabling-travis/package.json
+++ b/Chapter08/testing-with-jest/package.json
@@ -1,15 +1,15 @@
 {
-  "name": "enabling-travis",
+  "name": "testing-with-jest",
   "version": "1.0.0",
   "description": "",
   "main": "index.js",
   "scripts": {
-    "test": "test test/test.js"
+    "test": "jest"
   },
   "keywords": [],
   "author": "",
   "license": "ISC",
-  "dependencies": {
-    "tape": "^5.0.1"
+  "devDependencies": {
+    "jest": "^26.1.0"
   }
 }
diff --git a/Chapter08/testing-with-jest/test/test.js b/Chapter08/testing-with-jest/test/test.js
new file mode 100644
index 0000000..d4ff76b
--- /dev/null
+++ b/Chapter08/testing-with-jest/test/test.js
@@ -0,0 +1,10 @@
+let uppercase = require("./../uppercase");
+
+describe("uppercase", () => {
+  test("uppercase hello returns HELLO", () => {
+    uppercase = jest.fn(() => "HELLO");
+    const result = uppercase("hello");
+    expect(uppercase).toHaveBeenCalledWith("hello");
+    expect(result).toBe("HELLO");
+  });
+});
diff --git a/Chapter08/testing-with-jest/uppercase.js b/Chapter08/testing-with-jest/uppercase.js
new file mode 100644
index 0000000..0da29fa
--- /dev/null
+++ b/Chapter08/testing-with-jest/uppercase.js
@@ -0,0 +1,3 @@
+module.exports = (string) => {
+  return string.toUpperCase();
+};
diff --git a/Chapter08/using-puppeteer/package-lock.json b/Chapter08/using-puppeteer/package-lock.json
new file mode 100644
index 0000000..de2a34c
--- /dev/null
+++ b/Chapter08/using-puppeteer/package-lock.json
@@ -0,0 +1,397 @@
+{
+  "name": "using-puppeteer",
+  "version": "1.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
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+      "dev": true,
+      "optional": true
+    },
+    "@types/yauzl": {
+      "version": "2.9.1",
+      "resolved": "https://registry.npmjs.org/@types/yauzl/-/yauzl-2.9.1.tgz",
+      "integrity": "sha512-A1b8SU4D10uoPjwb0lnHmmu8wZhR9d+9o2PKBQT2jU5YPTKsxac6M2qGAdY7VcL+dHHhARVUDmeg0rOrcd9EjA==",
+      "dev": true,
+      "optional": true,
+      "requires": {
+        "@types/node": "*"
+      }
+    },
+    "agent-base": {
+      "version": "5.1.1",
+      "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-5.1.1.tgz",
+      "integrity": "sha512-TMeqbNl2fMW0nMjTEPOwe3J/PRFP4vqeoNuQMG0HlMrtm5QxKqdvAkZ1pRBQ/ulIyDD5Yq0nJ7YbdD8ey0TO3g==",
+      "dev": true
+    },
+    "balanced-match": {
+      "version": "1.0.0",
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+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
+      "dev": true
+    },
+    "base64-js": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.3.1.tgz",
+      "integrity": "sha512-mLQ4i2QO1ytvGWFWmcngKO//JXAQueZvwEKtjgQFM4jIK0kU+ytMfplL8j+n5mspOfjHwoAg+9yhb7BwAHm36g==",
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+      "dev": true,
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diff --git a/Chapter08/using-puppeteer/package.json b/Chapter08/using-puppeteer/package.json
new file mode 100644
index 0000000..d68fb4f
--- /dev/null
+++ b/Chapter08/using-puppeteer/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "using-puppeteer",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "devDependencies": {
+    "puppeteer": "^4.0.1"
+  }
+}
diff --git a/Chapter08/using-puppeteer/test/test.js b/Chapter08/using-puppeteer/test/test.js
new file mode 100644
index 0000000..dd7d5c7
--- /dev/null
+++ b/Chapter08/using-puppeteer/test/test.js
@@ -0,0 +1,16 @@
+const assert = require("assert");
+const puppeteer = require("puppeteer");
+
+async function runTest() {
+  const browser = await puppeteer.launch();
+  const page = await browser.newPage();
+  await page.goto("https://example.com");
+
+  const title = await page.$eval("h1", (el) => el.innerText);
+  console.log("Title value:", title);
+  assert.equal(title, "Example Domain");
+
+  browser.close();
+}
+
+runTest();