diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 1afa68b3c0f02e4c75efcfb8b7f3dc527ed490a6..8592dce561172ed6977718df0be659888514ce57 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -2,8 +2,6 @@
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       <file pinned="false" current-in-tab="true">
-        <entry file="file://$PROJECT_DIR$/dao/persondao.js">
+        <entry file="file://$PROJECT_DIR$/dao/persondao.test.js">
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@@ -52,8 +41,8 @@
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-        <option value="$PROJECT_DIR$/dao/persondao.test.js" />
         <option value="$PROJECT_DIR$/dao/persondao.js" />
+        <option value="$PROJECT_DIR$/dao/persondao.test.js" />
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@@ -133,12 +122,12 @@
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@@ -146,7 +135,7 @@
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@@ -168,24 +157,24 @@
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-    <entry file="file://$PROJECT_DIR$/dao/persondao.js">
+    <entry file="file://$PROJECT_DIR$/dao/persondao.test.js">
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diff --git a/coverage/calculator.js.html b/coverage/calculator.js.html
new file mode 100644
index 0000000000000000000000000000000000000000..6e14c7492d9c17d4294d02e1c26eb5eda8866027
--- /dev/null
+++ b/coverage/calculator.js.html
@@ -0,0 +1,173 @@
+<!doctype html>
+<html lang="en">
+<head>
+    <title>Code coverage report for calculator.js</title>
+    <meta charset="utf-8" />
+    <link rel="stylesheet" href="prettify.css" />
+    <link rel="stylesheet" href="base.css" />
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <style type='text/css'>
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+<div class='wrapper'>
+  <div class='pad1'>
+    <h1>
+      <a href="index.html">All files</a> calculator.js
+    </h1>
+    <div class='clearfix'>
+      <div class='fl pad1y space-right2'>
+        <span class="strong">93.75% </span>
+        <span class="quiet">Statements</span>
+        <span class='fraction'>15/16</span>
+      </div>
+      <div class='fl pad1y space-right2'>
+        <span class="strong">100% </span>
+        <span class="quiet">Branches</span>
+        <span class='fraction'>8/8</span>
+      </div>
+      <div class='fl pad1y space-right2'>
+        <span class="strong">100% </span>
+        <span class="quiet">Functions</span>
+        <span class='fraction'>2/2</span>
+      </div>
+      <div class='fl pad1y space-right2'>
+        <span class="strong">93.75% </span>
+        <span class="quiet">Lines</span>
+        <span class='fraction'>15/16</span>
+      </div>
+    </div>
+  </div>
+  <div class='status-line high'></div>
+<pre><table class="coverage">
+<tr><td class="line-count quiet">1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+11
+12
+13
+14
+15
+16
+17
+18
+19
+20
+21
+22
+23
+24
+25
+26
+27
+28
+29
+30
+31
+32
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+34
+35
+36
+37</td><td class="line-coverage quiet"><span class="cline-any cline-yes">1x</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-yes">22x</span>
+<span class="cline-any cline-yes">22x</span>
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+<span class="cline-any cline-neutral">&nbsp;</span>
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+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-yes">16x</span>
+<span class="cline-any cline-yes">16x</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>
+<span class="cline-any cline-yes">15x</span>
+<span class="cline-any cline-yes">15x</span>
+<span class="cline-any cline-yes">5x</span>
+<span class="cline-any cline-yes">5x</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-yes">10x</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-no">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</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 = class Calculator {
+  constructor() {}
+&nbsp;
+  calculate(expression) {
+    let pos = expression.indexOf("+");
+    if (pos &gt;= 0) {
+      return (
+        this.calculate(expression.substr(0, pos)) +
+        this.calculate(expression.substr(pos + 1))
+      );
+    } else {
+      pos = expression.indexOf("-");
+      if (pos &gt;= 0) {
+        return (
+          this.calculate(expression.substr(0, pos)) -
+          this.calculate(expression.substr(pos + 1))
+        );
+      } else {
+        // Remove ALL whitespaces
+        expression = expression.replace(/\s+/g, "");
+        if (expression === "") {
+          return 0;
+        }
+&nbsp;
+        let num = Number(expression);
+        if (!Number.isInteger(num)) {
+          console.log("'" + expression + "' is not an integer");
+          throw new Error("'" + expression + "' is not an integer");
+        } else {
+          return num;
+        }
+      }
+    }
+<span class="cstat-no" title="statement not covered" >    return 0;</span>
+  }
+};
+&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 Tue Sep 24 2019 15:12:37 GMT+0200 (GMT+02:00)
+</div>
+</div>
+<script src="prettify.js"></script>
+<script>
+window.onload = function () {
+        if (typeof prettyPrint === 'function') {
+            prettyPrint();
+        }
+};
+</script>
+<script src="sorter.js"></script>
+</body>
+</html>
diff --git a/coverage/coverage-final.json b/coverage/coverage-final.json
new file mode 100644
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--- /dev/null
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diff --git a/coverage/dao.js.html b/coverage/dao.js.html
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index 0000000000000000000000000000000000000000..039c8647d71503ff49a90eb3f459b009ade39cc8
--- /dev/null
+++ b/coverage/dao.js.html
@@ -0,0 +1,149 @@
+<!doctype html>
+<html lang="en">
+<head>
+    <title>Code coverage report for dao.js</title>
+    <meta charset="utf-8" />
+    <link rel="stylesheet" href="prettify.css" />
+    <link rel="stylesheet" href="base.css" />
+    <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> dao.js
+    </h1>
+    <div class='clearfix'>
+      <div class='fl pad1y space-right2'>
+        <span class="strong">73.33% </span>
+        <span class="quiet">Statements</span>
+        <span class='fraction'>11/15</span>
+      </div>
+      <div class='fl pad1y space-right2'>
+        <span class="strong">50% </span>
+        <span class="quiet">Branches</span>
+        <span class='fraction'>2/4</span>
+      </div>
+      <div class='fl pad1y space-right2'>
+        <span class="strong">100% </span>
+        <span class="quiet">Functions</span>
+        <span class='fraction'>4/4</span>
+      </div>
+      <div class='fl pad1y space-right2'>
+        <span class="strong">73.33% </span>
+        <span class="quiet">Lines</span>
+        <span class='fraction'>11/15</span>
+      </div>
+    </div>
+  </div>
+  <div class='status-line medium'></div>
+<pre><table class="coverage">
+<tr><td class="line-count quiet">1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+11
+12
+13
+14
+15
+16
+17
+18
+19
+20
+21
+22
+23
+24
+25
+26
+27
+28
+29</td><td class="line-coverage quiet"><span class="cline-any cline-yes">1x</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</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>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-yes">6x</span>
+<span class="cline-any cline-yes">6x</span>
+<span class="cline-any cline-yes">6x</span>
+<span class="cline-any cline-no">&nbsp;</span>
+<span class="cline-any cline-no">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-yes">6x</span>
+<span class="cline-any cline-yes">6x</span>
+<span class="cline-any cline-yes">6x</span>
+<span class="cline-any cline-yes">6x</span>
+<span class="cline-any cline-no">&nbsp;</span>
+<span class="cline-any cline-no">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-yes">6x</span>
+<span class="cline-any cline-yes">6x</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</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 = class Dao {
+  constructor(pool) {
+    // Dependency Injection
+    this.pool = pool;
+  }
+&nbsp;
+  query(sql, params, callback) {
+    this.pool.getConnection((err, connection) =&gt; {
+      console.log("dao: connected to database");
+      <span class="missing-if-branch" title="if path not taken" >I</span>if (err) {
+<span class="cstat-no" title="statement not covered" >        console.log("dao: error connecting");</span>
+<span class="cstat-no" title="statement not covered" >        callback(500, { error: "feil ved ved oppkobling" });</span>
+      } else {
+        console.log("dao: running sql: " + sql);
+        connection.query(sql, params, (err, rows) =&gt; {
+          connection.release();
+          <span class="missing-if-branch" title="if path not taken" >I</span>if (err) {
+<span class="cstat-no" title="statement not covered" >            console.log(err);</span>
+<span class="cstat-no" title="statement not covered" >            callback(500, { error: "error querying" });</span>
+          } else {
+            console.log("dao: returning rows");
+            callback(200, rows);
+          }
+        });
+      }
+    });
+  }
+};
+&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 Tue Sep 24 2019 15:12:37 GMT+0200 (GMT+02:00)
+</div>
+</div>
+<script src="prettify.js"></script>
+<script>
+window.onload = function () {
+        if (typeof prettyPrint === 'function') {
+            prettyPrint();
+        }
+};
+</script>
+<script src="sorter.js"></script>
+</body>
+</html>
diff --git a/coverage/index.html b/coverage/index.html
new file mode 100644
index 0000000000000000000000000000000000000000..94a4f52ebe3fb431d3877e4330dfae7c728d18be
--- /dev/null
+++ b/coverage/index.html
@@ -0,0 +1,145 @@
+<!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" />
+    <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">84.75% </span>
+        <span class="quiet">Statements</span>
+        <span class='fraction'>50/59</span>
+      </div>
+      <div class='fl pad1y space-right2'>
+        <span class="strong">75% </span>
+        <span class="quiet">Branches</span>
+        <span class='fraction'>12/16</span>
+      </div>
+      <div class='fl pad1y space-right2'>
+        <span class="strong">100% </span>
+        <span class="quiet">Functions</span>
+        <span class='fraction'>15/15</span>
+      </div>
+      <div class='fl pad1y space-right2'>
+        <span class="strong">84.75% </span>
+        <span class="quiet">Lines</span>
+        <span class='fraction'>50/59</span>
+      </div>
+    </div>
+  </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="calculator.js"><a href="calculator.js.html">calculator.js</a></td>
+	<td data-value="93.75" class="pic high"><div class="chart"><div class="cover-fill" style="width: 93%;"></div><div class="cover-empty" style="width:7%;"></div></div></td>
+	<td data-value="93.75" class="pct high">93.75%</td>
+	<td data-value="16" class="abs high">15/16</td>
+	<td data-value="100" class="pct high">100%</td>
+	<td data-value="8" class="abs high">8/8</td>
+	<td data-value="100" class="pct high">100%</td>
+	<td data-value="2" class="abs high">2/2</td>
+	<td data-value="93.75" class="pct high">93.75%</td>
+	<td data-value="16" class="abs high">15/16</td>
+	</tr>
+
+<tr>
+	<td class="file medium" data-value="dao.js"><a href="dao.js.html">dao.js</a></td>
+	<td data-value="73.33" class="pic medium"><div class="chart"><div class="cover-fill" style="width: 73%;"></div><div class="cover-empty" style="width:27%;"></div></div></td>
+	<td data-value="73.33" class="pct medium">73.33%</td>
+	<td data-value="15" class="abs medium">11/15</td>
+	<td data-value="50" class="pct medium">50%</td>
+	<td data-value="4" class="abs medium">2/4</td>
+	<td data-value="100" class="pct high">100%</td>
+	<td data-value="4" class="abs high">4/4</td>
+	<td data-value="73.33" class="pct medium">73.33%</td>
+	<td data-value="15" class="abs medium">11/15</td>
+	</tr>
+
+<tr>
+	<td class="file high" data-value="persondao.js"><a href="persondao.js.html">persondao.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="9" class="abs high">9/9</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="5" class="abs high">5/5</td>
+	<td data-value="100" class="pct high">100%</td>
+	<td data-value="9" class="abs high">9/9</td>
+	</tr>
+
+<tr>
+	<td class="file medium" data-value="runsqlfile.js"><a href="runsqlfile.js.html">runsqlfile.js</a></td>
+	<td data-value="76.47" class="pic medium"><div class="chart"><div class="cover-fill" style="width: 76%;"></div><div class="cover-empty" style="width:24%;"></div></div></td>
+	<td data-value="76.47" class="pct medium">76.47%</td>
+	<td data-value="17" class="abs medium">13/17</td>
+	<td data-value="50" class="pct medium">50%</td>
+	<td data-value="4" class="abs medium">2/4</td>
+	<td data-value="100" class="pct high">100%</td>
+	<td data-value="3" class="abs high">3/3</td>
+	<td data-value="76.47" class="pct medium">76.47%</td>
+	<td data-value="17" class="abs medium">13/17</td>
+	</tr>
+
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+	<td class="file high" data-value="sum.js"><a href="sum.js.html">sum.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>
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+	<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 -->
+</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 Tue Sep 24 2019 15:12:37 GMT+0200 (GMT+02:00)
+</div>
+</div>
+<script src="prettify.js"></script>
+<script>
+window.onload = function () {
+        if (typeof prettyPrint === 'function') {
+            prettyPrint();
+        }
+};
+</script>
+<script src="sorter.js"></script>
+</body>
+</html>
diff --git a/coverage/persondao.js.html b/coverage/persondao.js.html
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+++ b/coverage/persondao.js.html
@@ -0,0 +1,194 @@
+<!doctype html>
+<html lang="en">
+<head>
+    <title>Code coverage report for persondao.js</title>
+    <meta charset="utf-8" />
+    <link rel="stylesheet" href="prettify.css" />
+    <link rel="stylesheet" href="base.css" />
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <style type='text/css'>
+        .coverage-summary .sorter {
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+        }
+    </style>
+</head>
+<body>
+<div class='wrapper'>
+  <div class='pad1'>
+    <h1>
+      <a href="index.html">All files</a> persondao.js
+    </h1>
+    <div class='clearfix'>
+      <div class='fl pad1y space-right2'>
+        <span class="strong">100% </span>
+        <span class="quiet">Statements</span>
+        <span class='fraction'>9/9</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'>5/5</span>
+      </div>
+      <div class='fl pad1y space-right2'>
+        <span class="strong">100% </span>
+        <span class="quiet">Lines</span>
+        <span class='fraction'>9/9</span>
+      </div>
+    </div>
+  </div>
+  <div class='status-line high'></div>
+<pre><table class="coverage">
+<tr><td class="line-count quiet">1
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+44</td><td class="line-coverage quiet"><span class="cline-any cline-yes">1x</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-yes">1x</span>
+<span class="cline-any cline-neutral">&nbsp;</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>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-yes">2x</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-yes">1x</span>
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+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<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>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</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>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</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">const Dao = require("./dao.js");
+&nbsp;
+module.exports = class PersonDao extends Dao {
+  getAll(callback) {
+    super.query("select navn, alder, adresse from person", [], callback);
+  }
+&nbsp;
+  getOne(id, callback) {
+    super.query(
+      "select navn, alder, adresse from person where id=?",
+      [id],
+      callback
+    );
+  }
+&nbsp;
+  createOne(json, callback) {
+    var val = [json.navn, json.adresse, json.alder];
+    super.query(
+      "insert into person (navn,adresse,alder) values (?,?,?)",
+      val,
+      callback
+    );
+  }
+&nbsp;
+  updateOne(id, json, callback) {
+    var val = [json.navn, json.adresse, json.alder, id];
+    super.query(
+        "UPDATE person SET navn=?, adresse=?, alder=? WHERE id=?",
+        val,
+        callback
+    );
+  }
+&nbsp;
+  deleteOne(id, callback) {
+    super.query(
+        "DELETE FROM person WHERE id=?",
+        [id],
+        callback
+    )
+  }
+};
+&nbsp;
+&nbsp;
+&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 Tue Sep 24 2019 15:12:37 GMT+0200 (GMT+02:00)
+</div>
+</div>
+<script src="prettify.js"></script>
+<script>
+window.onload = function () {
+        if (typeof prettyPrint === 'function') {
+            prettyPrint();
+        }
+};
+</script>
+<script src="sorter.js"></script>
+</body>
+</html>
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diff --git a/coverage/runsqlfile.js.html b/coverage/runsqlfile.js.html
new file mode 100644
index 0000000000000000000000000000000000000000..ec176c5401d3f75de5c07b589317a7b306cf94a9
--- /dev/null
+++ b/coverage/runsqlfile.js.html
@@ -0,0 +1,140 @@
+<!doctype html>
+<html lang="en">
+<head>
+    <title>Code coverage report for runsqlfile.js</title>
+    <meta charset="utf-8" />
+    <link rel="stylesheet" href="prettify.css" />
+    <link rel="stylesheet" href="base.css" />
+    <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> runsqlfile.js
+    </h1>
+    <div class='clearfix'>
+      <div class='fl pad1y space-right2'>
+        <span class="strong">76.47% </span>
+        <span class="quiet">Statements</span>
+        <span class='fraction'>13/17</span>
+      </div>
+      <div class='fl pad1y space-right2'>
+        <span class="strong">50% </span>
+        <span class="quiet">Branches</span>
+        <span class='fraction'>2/4</span>
+      </div>
+      <div class='fl pad1y space-right2'>
+        <span class="strong">100% </span>
+        <span class="quiet">Functions</span>
+        <span class='fraction'>3/3</span>
+      </div>
+      <div class='fl pad1y space-right2'>
+        <span class="strong">76.47% </span>
+        <span class="quiet">Lines</span>
+        <span class='fraction'>13/17</span>
+      </div>
+    </div>
+  </div>
+  <div class='status-line medium'></div>
+<pre><table class="coverage">
+<tr><td class="line-count quiet">1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+11
+12
+13
+14
+15
+16
+17
+18
+19
+20
+21
+22
+23
+24
+25
+26</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-yes">1x</span>
+<span class="cline-any cline-yes">2x</span>
+<span class="cline-any cline-yes">2x</span>
+<span class="cline-any cline-yes">2x</span>
+<span class="cline-any cline-yes">2x</span>
+<span class="cline-any cline-no">&nbsp;</span>
+<span class="cline-any cline-no">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-yes">2x</span>
+<span class="cline-any cline-yes">2x</span>
+<span class="cline-any cline-yes">2x</span>
+<span class="cline-any cline-yes">2x</span>
+<span class="cline-any cline-no">&nbsp;</span>
+<span class="cline-any cline-no">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-yes">2x</span>
+<span class="cline-any cline-yes">2x</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-neutral">&nbsp;</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">var mysql = require("mysql");
+var fs = require("fs");
+&nbsp;
+module.exports = function run(filename, pool, done) {
+  console.log("runsqlfile: reading file " + filename);
+  let sql = fs.readFileSync(filename, "utf8");
+  pool.getConnection((err, connection) =&gt; {
+    <span class="missing-if-branch" title="if path not taken" >I</span>if (err) {
+<span class="cstat-no" title="statement not covered" >      console.log("runsqlfile: error connecting");</span>
+<span class="cstat-no" title="statement not covered" >      done();</span>
+    } else {
+      console.log("runsqlfile: connected");
+      connection.query(sql, (err, rows) =&gt; {
+        connection.release();
+        <span class="missing-if-branch" title="if path not taken" >I</span>if (err) {
+<span class="cstat-no" title="statement not covered" >          console.log(err);</span>
+<span class="cstat-no" title="statement not covered" >          done();</span>
+        } else {
+          console.log("runsqlfile: run ok");
+          done();
+        }
+      });
+    }
+  });
+};
+&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 Tue Sep 24 2019 15:12:37 GMT+0200 (GMT+02:00)
+</div>
+</div>
+<script src="prettify.js"></script>
+<script>
+window.onload = function () {
+        if (typeof prettyPrint === 'function') {
+            prettyPrint();
+        }
+};
+</script>
+<script src="sorter.js"></script>
+</body>
+</html>
diff --git a/coverage/sort-arrow-sprite.png b/coverage/sort-arrow-sprite.png
new file mode 100644
index 0000000000000000000000000000000000000000..03f704a609c6fd0dbfdac63466a7d7c958b5cbf3
Binary files /dev/null and b/coverage/sort-arrow-sprite.png differ
diff --git a/coverage/sorter.js b/coverage/sorter.js
new file mode 100644
index 0000000000000000000000000000000000000000..6c5034e403c70935ae766bfb940f945b04b2595b
--- /dev/null
+++ b/coverage/sorter.js
@@ -0,0 +1,158 @@
+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(cols);
+        addSortIndicators();
+        enableUI();
+    };
+})();
+
+window.addEventListener('load', addSorting);
diff --git a/coverage/sum.js.html b/coverage/sum.js.html
new file mode 100644
index 0000000000000000000000000000000000000000..8e0824637bf32e60a0f481873f3d3e5cad67d39a
--- /dev/null
+++ b/coverage/sum.js.html
@@ -0,0 +1,74 @@
+<!doctype html>
+<html lang="en">
+<head>
+    <title>Code coverage report for sum.js</title>
+    <meta charset="utf-8" />
+    <link rel="stylesheet" href="prettify.css" />
+    <link rel="stylesheet" href="base.css" />
+    <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> sum.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>
+  </div>
+  <div class='status-line high'></div>
+<pre><table class="coverage">
+<tr><td class="line-count quiet">1
+2
+3
+4</td><td class="line-coverage quiet"><span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-yes">1x</span>
+<span class="cline-any cline-neutral">&nbsp;</span>
+<span class="cline-any cline-yes">1x</span></td><td class="text"><pre class="prettyprint lang-js">function sum(a, b) {
+  return a + b;
+}
+module.exports = sum;</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 Tue Sep 24 2019 15:12:37 GMT+0200 (GMT+02:00)
+</div>
+</div>
+<script src="prettify.js"></script>
+<script>
+window.onload = function () {
+        if (typeof prettyPrint === 'function') {
+            prettyPrint();
+        }
+};
+</script>
+<script src="sorter.js"></script>
+</body>
+</html>
diff --git a/dao/persondao.test.js b/dao/persondao.test.js
index 500bccd32aee01d89ed3f54dd34fe1e613a3e2e5..f1f843fb703578252540d939c1095db77439ac3c 100644
--- a/dao/persondao.test.js
+++ b/dao/persondao.test.js
@@ -14,6 +14,8 @@ var pool = mysql.createPool({
   multipleStatements: true
 });
 
+
+
 let personDao = new PersonDao(pool);
 
 beforeAll(done => {