add test file for files with absolute file names (which are not allowed

according to the specifications)

Author: armijnhemel

testdata/absolute-name.zip

@@ -0,0 +1,54 @@
+The use of absolute paths in file names is not allowed according to the
+specifications (section 4.4.17):
+
+```
+The path stored MUST NOT contain a drive or
+device letter, or a leading slash.
+```
+
+In `unzip` it is not possible to create a file with absolute paths, but
+creating a file with a leading slash (or even multiple) is absolutely no
+problem using Python's `zipfile` module:
+
+```
+>>> import zipfile
+>>> z = zipfile.ZipInfo('/tmp/absolute')
+>>> contents = 10*b'c'
+>>> bla = zipfile.ZipFile('/tmp/absolute-name.zip', mode='w')
+>>> bla.writestr(z, contents)
+>>> bla.close()
+```
+
+`unzip` will unpack this to a relative path but also issue a warning:
+
+```
+$ unzip /tmp/bla.zip
+Archive:  /tmp/bla.zip
+warning:  stripped absolute path spec from /tmp/absolute
+ extracting: tmp/absolute
+```
+
+`p7zip` will also correctly unpack the file, but not issue a warning:
+
+```
+$ 7z x /tmp/bla.zip
+
+7-Zip [64] 16.02 : Copyright (c) 1999-2016 Igor Pavlov : 2016-05-21
+p7zip Version 16.02 (locale=en_US.UTF-8,Utf16=on,HugeFiles=on,64 bits,8 CPUs Intel(R) Core(TM) i7-6770HQ CPU @ 2.60GHz (506E3),ASM,AES-NI)
+
+Scanning the drive for archives:
+1 file, 134 bytes (1 KiB)
+
+Extracting archive: /tmp/bla.zip
+--
+Path = /tmp/bla.zip
+Type = zip
+Physical Size = 134
+
+Everything is Ok
+
+Size:       10
+Compressed: 134
+```
+
+Python's `zipfile` will also correctly unpack the file, but issue no warning.

testdata/readme.absolutefilename

@@ -0,0 +1,98 @@
+---
+source: ziplinter/src/lib.rs
+expression: result
+---
+{
+  "comment": "",
+  "contents": [
+    {
+      "central": {
+        "comment": "",
+        "compressed_size": 10,
+        "crc32": 4044738111,
+        "creator_version": {
+          "host_system": "Unix",
+          "version": 20
+        },
+        "disk_nbr_start": 0,
+        "external_attrs": 25165824,
+        "extra": [],
+        "flags": 0,
+        "header_offset": 0,
+        "internal_attrs": 0,
+        "method": "Store",
+        "mode": 384,
+        "modified": "1980-01-01T00:00:00Z",
+        "name": "/tmp/absolute",
+        "reader_version": {
+          "host_system": "MsDos",
+          "version": 20
+        },
+        "uncompressed_size": 10
+      },
+      "local": {
+        "accessed": null,
+        "compressed_size": 10,
+        "crc32": 4044738111,
+        "created": null,
+        "extra": [],
+        "flags": 0,
+        "gid": null,
+        "header_offset": 0,
+        "method": "Store",
+        "method_specific": "None",
+        "mode": 0,
+        "modified": "1980-01-01T00:00:00Z",
+        "name": "/tmp/absolute",
+        "reader_version": {
+          "host_system": "MsDos",
+          "version": 20
+        },
+        "uid": null,
+        "uncompressed_size": 10
+      }
+    }
+  ],
+  "encoding": "Utf8",
+  "eocd": {
+    "dir": {
+      "inner": {
+        "dir_disk_nbr": 0,
+        "dir_records_this_disk": 1,
+        "directory_offset": 53,
+        "directory_records": 1,
+        "directory_size": 59,
+        "disk_nbr": 0
+      },
+      "offset": 112
+    },
+    "dir64": null,
+    "global_offset": 0
+  },
+  "parsed_ranges": [
+    {
+      "contains": "end of central directory record",
+      "end": 134,
+      "start": 112
+    },
+    {
+      "contains": "central directory header",
+      "end": 112,
+      "filename": "/tmp/absolute",
+      "start": 53
+    },
+    {
+      "contains": "local file header",
+      "end": 43,
+      "filename": "/tmp/absolute",
+      "start": 0
+    },
+    {
+      "contains": "file data",
+      "end": 53,
+      "filename": "/tmp/absolute",
+      "start": 43
+    }
+  ],
+  "size": 134
+}