Accept a list for the requires attribute

conans/model/conan_file.py

@@ -42,7 +42,7 @@ def create_requirements(conanfile):
         else:
             if not conanfile.requires:
                 return Requirements()
-            if isinstance(conanfile.requires, tuple):
+            if isinstance(conanfile.requires, (tuple, list)):
                 return Requirements(*conanfile.requires)
             else:
                 return Requirements(conanfile.requires, )

conans/test/unittests/model/conan_file/create_requirements_test.py

@@ -0,0 +1,49 @@
+# coding=utf-8
+
+import unittest
+from collections import namedtuple
+
+from conans.model.conan_file import create_requirements
+
+MockConanFile = namedtuple("MockConanFile", ["requires", ])
+
+
+class TupleTest(unittest.TestCase):
+
+    def test_implicit_tuple(self):
+        requires = "req/1.0@user/version", "req2/1.0@user/version"
+        self.assertEqual(type(requires), tuple)
+        conanfile = MockConanFile(requires=requires)
+        r = create_requirements(conanfile)
+        self.assertListEqual(list(r.keys()), ["req", "req2"])
+
+    def test_tuple(self):
+        requires = ("req/1.0@user/version", "req2/1.0@user/version")
+        self.assertEqual(type(requires), tuple)
+        conanfile = MockConanFile(requires=requires)
+        r = create_requirements(conanfile)
+        self.assertListEqual(list(r.keys()), ["req", "req2"])
+
+    def test_config_tuple(self):
+        requires = (("req/1.0@user/version", "private"), )
+        self.assertEqual(type(requires), tuple)
+        conanfile = MockConanFile(requires=requires)
+        r = create_requirements(conanfile)
+        self.assertListEqual(list(r.keys()), ["req", ])
+
+
+class ListTest(unittest.TestCase):
+
+    def test_list(self):
+        requires = ["req/1.0@user/version", "req2/1.0@user/version"]
+        self.assertEqual(type(requires), list)
+        conanfile = MockConanFile(requires=requires)
+        r = create_requirements(conanfile)
+        self.assertListEqual(list(r.keys()), ["req", "req2"])
+
+    def test_config_list(self):
+        requires = [("req/1.0@user/version", "private"), ]
+        self.assertEqual(type(requires), list)
+        conanfile = MockConanFile(requires=requires)
+        r = create_requirements(conanfile)
+        self.assertListEqual(list(r.keys()), ["req", ])