prereq tests for issue #8235 (yaml without lists) and error message difference in no-list mode

tests/integration/files/file/base/requisites/prereq_error_nolist.sls

@@ -0,0 +1,7 @@
+# will fail with 'Cannot extend ID Z (...) not part of the high state.'
+# and not "The following requisites were not found" like in yaml list syntax
+I:
+  cmd.run:
+    - name: echo I
+    - prereq:
+        cmd: Z

tests/integration/files/file/base/requisites/prereq_simple_nolist.sls

@@ -0,0 +1,27 @@
+# B --+
+#     |
+# C <-+ ----+
+#           |
+# A <-------+
+
+# runs after C
+A:
+  cmd.run:
+    - name: echo A third
+    # is running in test mode before C
+    # C gets executed first if this states modify something
+    - prereq_in:
+       cmd: C
+
+# runs before C
+B:
+  cmd.run:
+    - name: echo B first
+    # will test C and be applied only if C changes,
+    # and then will run before C
+    - prereq:
+        cmd: C
+C:
+  cmd.run:
+    - name: echo C second
+

tests/integration/modules/state.py

@@ -676,6 +676,22 @@ fi
             }
         self.assertEqual(expected_result_simple, result)
 
+        # same test, but not using lists in yaml syntax
+        # TODO: issue #8235, prereq ignored when not used in list syntax
+        # Currently fails badly with :
+        # TypeError encountered executing state.sls: string indices must be integers, not str.
+        #result={}
+        #expected_result_simple.pop('cmd_|-I_|-echo I_|-run')
+        #expected_result_simple.pop('cmd_|-J_|-echo J_|-run')
+        #ret = self.run_function('state.sls', mods='requisites.prereq_simple_nolist')
+        #for item,descr in ret.iteritems():
+        #    result[item] = {
+        #        '__run_num__': descr['__run_num__'],
+        #        'comment':descr['comment'],
+        #        'result':descr['result']
+        #    }
+        #self.assertEqual(expected_result_simple, result)
+
         result={}
         ret = self.run_function('state.sls', mods='requisites.prereq_simple2')
         for item,descr in ret.iteritems():
@@ -686,6 +702,13 @@ fi
             }
         self.assertEqual(expected_result_simple2, result)
 
+        ret = self.run_function('state.sls', mods='requisites.prereq_error_nolist')
+        self.assertEqual(
+            ret,
+            ['Cannot extend ID Z in "base:requisites.prereq_error_nolist".'
+            + ' It is not part of the high state.']
+        )
+
         ret = self.run_function('state.sls', mods='requisites.prereq_compile_error1')
         self.assertEqual(
             ret['cmd_|-B_|-echo B_|-run']['comment'],