Tests: add helper for form-data and multipart.

test/unit/http.py

@@ -1,3 +1,6 @@
+import binascii
+import io
+import os
 import re
 import time
 import json
@@ -68,6 +71,10 @@ class TestHTTP(TestUnit):
             if body != b'':
                 if isinstance(body, str):
                     body = body.encode()
+                elif isinstance(body, dict):
+                    body, content_type = self.form_encode(body)
+
+                    headers['Content-Type'] = content_type
 
                 if 'Content-Length' not in headers:
                     headers['Content-Length'] = len(body)
@@ -266,3 +273,69 @@ class TestHTTP(TestUnit):
         sock.close()
 
         self.assertTrue(ret, 'socket connected')
+
+    def form_encode(self, fields):
+        is_multipart = False
+
+        for _, value in fields.items():
+            if isinstance(value, dict):
+                is_multipart = True
+                break
+
+        if is_multipart:
+            body, content_type = self.multipart_encode(fields)
+
+        else:
+            body, content_type = self.form_url_encode(fields)
+
+        return body, content_type
+
+    def form_url_encode(self, fields):
+        data = "&".join("%s=%s" % (name, value)
+                        for name, value in fields.items()).encode()
+        return data, 'application/x-www-form-urlencoded'
+
+    def multipart_encode(self, fields):
+        boundary = binascii.hexlify(os.urandom(16)).decode('ascii')
+
+        body = ''
+
+        for field, value in fields.items():
+            filename = ''
+            datatype = ''
+
+            if isinstance(value, dict):
+                datatype = 'text/plain'
+                filename = value['filename']
+
+                if value.get('type'):
+                    datatype = value['type']
+
+                if not isinstance(value['data'], io.IOBase):
+                    self.fail('multipart encoding of file requires a stream.')
+
+                data = value['data'].read()
+
+            elif isinstance(value, str):
+                data = value
+
+            else:
+                self.fail('multipart requires a string or stream data')
+
+            body += (
+                "--%s\r\nContent-Disposition: form-data; name=\"%s\""
+            ) % (boundary, field)
+
+            if filename != '':
+                body += "; filename=\"%s\"" % filename
+
+            body += "\r\n"
+
+            if datatype != '':
+                body += "Content-Type: %s\r\n" % datatype
+
+            body += "\r\n%s\r\n" % data
+
+        body += "--%s--\r\n" % boundary
+
+        return body.encode(), "multipart/form-data; boundary=%s" % boundary