Refactor tests, add compression test

This is implemented in JavaScript, because for implementing it in
Python, the concept of creating the directory listing view would have to
be changed.

servefile

@@ -407,9 +407,9 @@ class DirListingHandler(FileBaseHandler):
 	<table summary="Directory Listing">
 		<thead>
 			<tr>
-				<th class="name">Name</th>
-				<th class="lastModified">Last Modified</th>
-				<th class="size">Size</th>
+				<th class="name"><a onclick="sort('name');">Name</a></th>
+				<th class="last-modified"><a onclick="sort('last-modified');">Last Modified</a></th>
+				<th class="size"><a onclick="sort('size');">Size</a></th>
 				<th class="type">Type</th>
 			</tr>
 		</thead>
@@ -417,6 +417,82 @@ class DirListingHandler(FileBaseHandler):
 		""" % {'path': os.path.normpath(urllib.unquote(self.path))}
 		footer = """</tbody></table></div>
 <div class="footer"><a href="http://seba-geek.de/stuff/servefile/">servefile %(version)s</a></div>
+<script>
+    function unhumanize(text){
+        var powers = {'K': 1, 'M': 2, 'G': 3, 'T': 4};
+        var number = parseFloat(text.slice(0, text.length - 1));
+        var unit = text.slice(text.length - 1);
+        return number * Math.pow(1024, powers[unit]);
+    }
+
+
+    function compare_class(cls, modifier, a, b){
+        var atext = a.getElementsByClassName(cls).item(0).textContent,
+            btext = b.getElementsByClassName(cls).item(0).textContent,
+            atype = a.getElementsByClassName("type").item(0).innerHTML,
+            btype = b.getElementsByClassName("type").item(0).innerHTML;
+
+        // always keep directories on top
+        if (atype !== btype) {
+            if (atype === "Directory")
+                return -1
+            if (btype === "Directory")
+                return 1
+        }
+
+        if (cls === "name"){
+            if (atype === "Directory")
+                atext = atext.slice(0, atext.length - 1);
+
+            if (btype === "Directory")
+                btext = btext.slice(0, btext.length - 1);
+        }
+
+        if (cls === "size"){
+            aint = unhumanize(atext);
+            bint = unhumanize(btext);
+            // don't change the order of same-size objects
+            if (aint === bint)
+                return 1;
+            return aint > bint ? modifier : -modifier;
+        }
+        else
+            return atext.localeCompare(btext) * modifier;
+    }
+
+
+    function move_rows(e, i, a){
+        if (i === a.length - 1)
+            return;
+        var par = e.parentNode,
+            next = e.nextSibling;
+        if (next === a[i+1])
+            return;
+        par.removeChild(a[i+1]);
+        if (next)
+            par.insertBefore(a[i+1], next);
+        else
+            par.appendChild(a[i+1]);
+    }
+
+    function sort(cls){
+        var arr = Array.prototype.slice.call(document.getElementsByTagName("tr"));
+        var e = arr.shift();
+        if (!e.sort_modifier || e.sort_cls !== cls)
+            if (cls === "name")
+                e.sort_modifier = -1;
+            else
+                e.sort_modifier = 1;
+        e.sort_cls = cls;
+        e.sort_modifier = -1 * e.sort_modifier;
+        arr = arr.sort(function (a, b) { return compare_class(cls, e.sort_modifier, a, b); });
+        arr.forEach(move_rows);
+    }
+
+    var e = document.getElementsByTagName("tr").item(0);
+    e.sort_modifier = 1;
+    e.sort_cls = "name";
+</script>
 </body>
 </html>""" % {'version': __version__}
 		content = []

tests/test_servefile.py

@@ -1,4 +1,5 @@
 import io
+import os
 import pytest
 import requests
 import subprocess
@@ -51,21 +52,6 @@ def datadir(tmp_path):
     return _datadir
 
 
-@pytest.fixture(scope='class')
-def servefile_simple(run_servefile, datadir):
-    data = "NOOT NOOT"
-    p = datadir({'testfile': data}) / 'testfile'
-
-    run_servefile(str(p))
-
-    return dict(host='localhost', port=8080, protocol='http')
-
-
-def download_ok(r, expected_data, expected_code=200):
-    assert r.status_code == expected_code
-    assert r.text == expected_data
-
-
 def make_request(path='/', host='localhost', port=8080, method='get', protocol='http', **kwargs):
     url = '{}://{}:{}{}'.format(protocol, host, port, path)
     print('Calling {} on {} with {}'.format(method, url, kwargs))
@@ -74,12 +60,15 @@ def make_request(path='/', host='localhost', port=8080, method='get', protocol='
     return r
 
 
-def check_download(expected_data=None, path='/', status_code=200, **kwargs):
+def check_download(expected_data=None, path='/', fname=None, status_code=200, **kwargs):
+    if fname is None:
+        fname = os.path.basename(path)
     r = make_request(path, **kwargs)
     assert r.status_code == 200
     assert r.text == expected_data
     assert r.headers.get('Content-Type') == 'application/octet-stream'
-    # assert r.headers.get('Content-Disposition') == 'attachment; filename=""'
+    if fname:
+        assert r.headers.get('Content-Disposition') == 'attachment; filename="{}"'.format(fname)
     assert r.headers.get('Content-Transfer-Encoding') == 'binary'
 
     return r  # for additional tests
@@ -97,6 +86,7 @@ def test_correct_headers(run_servefile, datadir):
     data = "NOOT NOOT"
     p = datadir({'testfile': data}) / 'testfile'
     run_servefile(str(p))
+
     r = make_request()
     assert r.status_code == 200
     assert r.headers.get('Content-Type') == 'application/octet-stream'
@@ -107,33 +97,32 @@ def test_correct_headers(run_servefile, datadir):
 def test_redirect_and_download(run_servefile, datadir):
     data = "NOOT NOOT"
     p = datadir({'testfile': data}) / 'testfile'
-
     run_servefile(str(p))
 
+    # redirect
     r = make_request(allow_redirects=False)
     assert r.status_code == 302
     assert r.headers.get('Location') == '/testfile'
 
-    r = requests.get("http://127.0.0.1:8080")
-    download_ok(r, data)
+    # normal download
+    check_download(data, fname='testfile')
 
 
 def test_specify_port(run_servefile, datadir):
     data = "NOOT NOOT"
     p = datadir({'testfile': data}) / 'testfile'
     run_servefile([str(p), '-p', '8081'])
-    r = make_request(port=8081)
-    download_ok(r, data)
+
+    check_download(data, fname='testfile', port=8081)
 
 
 def test_big_download(run_servefile, datadir):
     # test with about 10 mb of data
     data = "x" * (10 * 1024 ** 2)
     p = datadir({'testfile': data}) / 'testfile'
-
     run_servefile(str(p))
-    r = make_request()
-    download_ok(r, data)
+
+    check_download(data, fname='testfile')
 
 
 def test_authentication(run_servefile, datadir):
@@ -146,8 +135,7 @@ def test_authentication(run_servefile, datadir):
         assert '401 - Unauthorized' in r.text
         assert r.status_code == 401
 
-    r = make_request(auth=('user', 'password'))
-    download_ok(r, data)
+    check_download(data, fname='testfile', auth=('user', 'password'))
 
 
 def test_serve_directory(run_servefile, datadir):
@@ -244,7 +232,7 @@ def test_tar_mode(run_servefile, datadir):
     # test contents of tar file
     r = make_request()
     assert r.status_code == 200
-    tar = tarfile.open(fileobj=io.BytesIO(r.text.encode()))
+    tar = tarfile.open(fileobj=io.BytesIO(r.content))
     assert len(tar.getmembers()) == 3
     assert tar.getmember('foo').isdir()
     for filename, content in d['foo'].items():
@@ -254,7 +242,14 @@ def test_tar_mode(run_servefile, datadir):
 
 
 def test_tar_compression(run_servefile, datadir):
-    pass
+    d = {'foo': 'blubb'}
+    p = datadir(d)
+    run_servefile(['-c', 'gzip', '-t', str(p / 'foo')])
+
+    r = make_request()
+    assert r.status_code == 200
+    tar = tarfile.open(fileobj=io.BytesIO(r.content), mode='r:gz')
+    assert len(tar.getmembers()) == 1
 
 
 def test_https(run_servefile, datadir):