prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  Unsupported testlist versions should trigger an error
  #2316 (included in [cime5.4.0-alpha.25](https://github.com/ESMCI/cime/releases/tag/cime5.4.0-alpha.25)) dropped support for v1 of the testlist XML file, but trying to run a test suite from a v1.0 testlist file results in no tests being run instead of a traceable error.
  
  For example, POP's test list in both `cesm2_0_alpha10b` and `cesm2_0_alpha10c` is still v1.0, and running `aux_pop` on cheyenne results in:
  
  ```
  $ qcmd -- ./create_test --parallel-jobs 4 --proc-pool 36 --xml-machine cheyenne --xml-compiler intel --xml-category aux_pop --queue economy --walltime 2:00 --project P93300070 --test-root /glade/scratch/mlevy/tests/empty_testlist
  Submitting command to PBS using account P93300070:
      ./create_test --parallel-jobs 4 --proc-pool 36 --xml-machine cheyenne --xml-compiler intel --xml-category aux_pop --queue economy --walltime 2:00 --project P93300070 --test-root /glade/scratch/mlevy/tests/empty_testlist
  
  Waiting for job 7572427.chadmin1 to start ...
  
  
  Testnames: []
  RUNNING TESTS:
  Due to presence of batch system, create_test will exit before tests are complete.
  To force create_test to wait for full completion, use --wait
  At test-scheduler close, state is:
  test-scheduler took 0.01305103302 seconds
  ```
  
  Even though there are 35 tests defined in the no-longer-supported XML format.
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `scripts/lib/CIME/XML/testlist.py`
  Content:
  ```
  1 """
  2 Interface to the config_files.xml file.  This class inherits from generic_xml.py
  3 It supports version 2.0 of the testlist.xml file
  4 
  5 In version 2 of the file options can be specified to further refine a test or
  6 set of tests. They can be specified either at the top level, in which case they
  7 apply to all machines/compilers for this test:
  8 
  9 <test ...>
  10   <options>
  11     <option name="wallclock">00:20</option>
  12   </options>
  13   ...
  14 </test>
  15 
  16 or at the level of a particular machine/compiler:
  17 
  18 <test ...>
  19   <machines>
  20     <machine ...>
  21       <options>
  22         <option name="wallclock">00:20</option>
  23       </options>
  24     </machine>
  25   </machines>
  26 </test>
  27 
  28 Currently supported options are:
  29 
  30 - walltime: sets the wallclock limit in the queuing system
  31 
  32 - memleak_tolerance: specifies the relative memory growth expected for this test
  33 
  34 - comment: has no effect, but is written out when printing the test list
  35 
  36 """
  37 from CIME.XML.standard_module_setup import *
  38 
  39 from CIME.XML.generic_xml import GenericXML
  40 from CIME.XML.files import Files
  41 
  42 logger = logging.getLogger(__name__)
  43 
  44 class Testlist(GenericXML):
  45 
  46     def __init__(self,infile, files=None):
  47         """
  48         initialize an object
  49         """
  50         schema = None
  51         if files is None:
  52             files = Files()
  53         schema = files.get_schema("TESTS_SPEC_FILE")
  54         GenericXML.__init__(self, infile, schema=schema)
  55 
  56     def get_tests(self, machine=None, category=None, compiler=None, compset=None, grid=None, supported_only=False):
  57         tests = []
  58         attributes = {}
  59         if compset is not None:
  60             attributes['compset'] = compset
  61         if grid is not None:
  62             attributes['grid'] = grid
  63 
  64         testnodes = self.get_children("test", attributes=attributes)
  65 
  66         machatts = {}
  67         if machine is not None:
  68             machatts["name"]      = machine
  69         if category is not None:
  70             machatts["category"]  = category
  71         if compiler is not None:
  72             machatts["compiler"]  = compiler
  73 
  74 
  75         for tnode in testnodes:
  76             if supported_only and self.has(tnode, "supported") and self.get(tnode, "supported") == 'false':
  77                 continue
  78 
  79             machnode = self.get_optional_child("machines", root=tnode)
  80             machnodes = None if machnode is None else self.get_children("machine",machatts,root=machnode)
  81             if machnodes:
  82                 this_test_node = {}
  83                 for key, value in self.attrib(tnode).items():
  84                     if key == "name":
  85                         this_test_node["testname"] = value
  86                     else:
  87                         this_test_node[key] = value
  88 
  89 
  90 
  91                 # Get options that apply to all machines/compilers for this test
  92                 options = self.get_children("options", root=tnode)
  93                 if len(options) > 0:
  94                     optionnodes = self.get_children("option", root=options[0])
  95                 else:
  96                     optionnodes = []
  97                 for mach in machnodes:
  98                     # this_test_node can include multiple tests
  99                     this_test = dict(this_test_node)
  100                     for key, value in self.attrib(mach).items():
  101                         if key == "name":
  102                             this_test["machine"] = value
  103                         else:
  104                             this_test[key] = value
  105                     this_test["options"] = {}
  106 
  107                     for onode in optionnodes:
  108                         this_test['options'][self.get(onode, 'name')] = self.text(onode)
  109 
  110                     # Now get options specific to this machine/compiler
  111                     options = self.get_optional_child("options", root=mach)
  112                     optionnodes = [] if options is None else self.get_children("option", root=options)
  113                     for onode in optionnodes:
  114                         this_test['options'][self.get(onode, 'name')] = self.text(onode)
  115 
  116                     tests.append(this_test)
  117 
  118         return tests
  119
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/scripts/lib/CIME/XML/testlist.py b/scripts/lib/CIME/XML/testlist.py
  --- a/scripts/lib/CIME/XML/testlist.py
  +++ b/scripts/lib/CIME/XML/testlist.py
  @@ -52,6 +52,8 @@
               files = Files()
           schema = files.get_schema("TESTS_SPEC_FILE")
           GenericXML.__init__(self, infile, schema=schema)
  +        expect(self.get_version() >= 2.0,
  +               "{} is an unsupported version of the testfile format and will be ignored".format(infile))
   
       def get_tests(self, machine=None, category=None, compiler=None, compset=None, grid=None, supported_only=False):
           tests = []
  
verification_info: {"golden_diff": "diff --git a/scripts/lib/CIME/XML/testlist.py b/scripts/lib/CIME/XML/testlist.py\n--- a/scripts/lib/CIME/XML/testlist.py\n+++ b/scripts/lib/CIME/XML/testlist.py\n@@ -52,6 +52,8 @@\n             files = Files()\n         schema = files.get_schema(\"TESTS_SPEC_FILE\")\n         GenericXML.__init__(self, infile, schema=schema)\n+        expect(self.get_version() >= 2.0,\n+               \"{} is an unsupported version of the testfile format and will be ignored\".format(infile))\n \n     def get_tests(self, machine=None, category=None, compiler=None, compset=None, grid=None, supported_only=False):\n         tests = []\n", "issue": "Unsupported testlist versions should trigger an error\n#2316 (included in [cime5.4.0-alpha.25](https://github.com/ESMCI/cime/releases/tag/cime5.4.0-alpha.25)) dropped support for v1 of the testlist XML file, but trying to run a test suite from a v1.0 testlist file results in no tests being run instead of a traceable error.\r\n\r\nFor example, POP's test list in both `cesm2_0_alpha10b` and `cesm2_0_alpha10c` is still v1.0, and running `aux_pop` on cheyenne results in:\r\n\r\n```\r\n$ qcmd -- ./create_test --parallel-jobs 4 --proc-pool 36 --xml-machine cheyenne --xml-compiler intel --xml-category aux_pop --queue economy --walltime 2:00 --project P93300070 --test-root /glade/scratch/mlevy/tests/empty_testlist\r\nSubmitting command to PBS using account P93300070:\r\n    ./create_test --parallel-jobs 4 --proc-pool 36 --xml-machine cheyenne --xml-compiler intel --xml-category aux_pop --queue economy --walltime 2:00 --project P93300070 --test-root /glade/scratch/mlevy/tests/empty_testlist\r\n\r\nWaiting for job 7572427.chadmin1 to start ...\r\n\r\n\r\nTestnames: []\r\nRUNNING TESTS:\r\nDue to presence of batch system, create_test will exit before tests are complete.\r\nTo force create_test to wait for full completion, use --wait\r\nAt test-scheduler close, state is:\r\ntest-scheduler took 0.01305103302 seconds\r\n```\r\n\r\nEven though there are 35 tests defined in the no-longer-supported XML format.\n", "before_files": [{"content": "\"\"\"\nInterface to the config_files.xml file.  This class inherits from generic_xml.py\nIt supports version 2.0 of the testlist.xml file\n\nIn version 2 of the file options can be specified to further refine a test or\nset of tests. They can be specified either at the top level, in which case they\napply to all machines/compilers for this test:\n\n<test ...>\n  <options>\n    <option name=\"wallclock\">00:20</option>\n  </options>\n  ...\n</test>\n\nor at the level of a particular machine/compiler:\n\n<test ...>\n  <machines>\n    <machine ...>\n      <options>\n        <option name=\"wallclock\">00:20</option>\n      </options>\n    </machine>\n  </machines>\n</test>\n\nCurrently supported options are:\n\n- walltime: sets the wallclock limit in the queuing system\n\n- memleak_tolerance: specifies the relative memory growth expected for this test\n\n- comment: has no effect, but is written out when printing the test list\n\n\"\"\"\nfrom CIME.XML.standard_module_setup import *\n\nfrom CIME.XML.generic_xml import GenericXML\nfrom CIME.XML.files import Files\n\nlogger = logging.getLogger(__name__)\n\nclass Testlist(GenericXML):\n\n    def __init__(self,infile, files=None):\n        \"\"\"\n        initialize an object\n        \"\"\"\n        schema = None\n        if files is None:\n            files = Files()\n        schema = files.get_schema(\"TESTS_SPEC_FILE\")\n        GenericXML.__init__(self, infile, schema=schema)\n\n    def get_tests(self, machine=None, category=None, compiler=None, compset=None, grid=None, supported_only=False):\n        tests = []\n        attributes = {}\n        if compset is not None:\n            attributes['compset'] = compset\n        if grid is not None:\n            attributes['grid'] = grid\n\n        testnodes = self.get_children(\"test\", attributes=attributes)\n\n        machatts = {}\n        if machine is not None:\n            machatts[\"name\"]      = machine\n        if category is not None:\n            machatts[\"category\"]  = category\n        if compiler is not None:\n            machatts[\"compiler\"]  = compiler\n\n\n        for tnode in testnodes:\n            if supported_only and self.has(tnode, \"supported\") and self.get(tnode, \"supported\") == 'false':\n                continue\n\n            machnode = self.get_optional_child(\"machines\", root=tnode)\n            machnodes = None if machnode is None else self.get_children(\"machine\",machatts,root=machnode)\n            if machnodes:\n                this_test_node = {}\n                for key, value in self.attrib(tnode).items():\n                    if key == \"name\":\n                        this_test_node[\"testname\"] = value\n                    else:\n                        this_test_node[key] = value\n\n\n\n                # Get options that apply to all machines/compilers for this test\n                options = self.get_children(\"options\", root=tnode)\n                if len(options) > 0:\n                    optionnodes = self.get_children(\"option\", root=options[0])\n                else:\n                    optionnodes = []\n                for mach in machnodes:\n                    # this_test_node can include multiple tests\n                    this_test = dict(this_test_node)\n                    for key, value in self.attrib(mach).items():\n                        if key == \"name\":\n                            this_test[\"machine\"] = value\n                        else:\n                            this_test[key] = value\n                    this_test[\"options\"] = {}\n\n                    for onode in optionnodes:\n                        this_test['options'][self.get(onode, 'name')] = self.text(onode)\n\n                    # Now get options specific to this machine/compiler\n                    options = self.get_optional_child(\"options\", root=mach)\n                    optionnodes = [] if options is None else self.get_children(\"option\", root=options)\n                    for onode in optionnodes:\n                        this_test['options'][self.get(onode, 'name')] = self.text(onode)\n\n                    tests.append(this_test)\n\n        return tests\n", "path": "scripts/lib/CIME/XML/testlist.py"}], "after_files": [{"content": "\"\"\"\nInterface to the config_files.xml file.  This class inherits from generic_xml.py\nIt supports version 2.0 of the testlist.xml file\n\nIn version 2 of the file options can be specified to further refine a test or\nset of tests. They can be specified either at the top level, in which case they\napply to all machines/compilers for this test:\n\n<test ...>\n  <options>\n    <option name=\"wallclock\">00:20</option>\n  </options>\n  ...\n</test>\n\nor at the level of a particular machine/compiler:\n\n<test ...>\n  <machines>\n    <machine ...>\n      <options>\n        <option name=\"wallclock\">00:20</option>\n      </options>\n    </machine>\n  </machines>\n</test>\n\nCurrently supported options are:\n\n- walltime: sets the wallclock limit in the queuing system\n\n- memleak_tolerance: specifies the relative memory growth expected for this test\n\n- comment: has no effect, but is written out when printing the test list\n\n\"\"\"\nfrom CIME.XML.standard_module_setup import *\n\nfrom CIME.XML.generic_xml import GenericXML\nfrom CIME.XML.files import Files\n\nlogger = logging.getLogger(__name__)\n\nclass Testlist(GenericXML):\n\n    def __init__(self,infile, files=None):\n        \"\"\"\n        initialize an object\n        \"\"\"\n        schema = None\n        if files is None:\n            files = Files()\n        schema = files.get_schema(\"TESTS_SPEC_FILE\")\n        GenericXML.__init__(self, infile, schema=schema)\n        expect(self.get_version() >= 2.0,\n               \"{} is an unsupported version of the testfile format and will be ignored\".format(infile))\n\n    def get_tests(self, machine=None, category=None, compiler=None, compset=None, grid=None, supported_only=False):\n        tests = []\n        attributes = {}\n        if compset is not None:\n            attributes['compset'] = compset\n        if grid is not None:\n            attributes['grid'] = grid\n\n        testnodes = self.get_children(\"test\", attributes=attributes)\n\n        machatts = {}\n        if machine is not None:\n            machatts[\"name\"]      = machine\n        if category is not None:\n            machatts[\"category\"]  = category\n        if compiler is not None:\n            machatts[\"compiler\"]  = compiler\n\n\n        for tnode in testnodes:\n            if supported_only and self.has(tnode, \"supported\") and self.get(tnode, \"supported\") == 'false':\n                continue\n\n            machnode = self.get_optional_child(\"machines\", root=tnode)\n            machnodes = None if machnode is None else self.get_children(\"machine\",machatts,root=machnode)\n            if machnodes:\n                this_test_node = {}\n                for key, value in self.attrib(tnode).items():\n                    if key == \"name\":\n                        this_test_node[\"testname\"] = value\n                    else:\n                        this_test_node[key] = value\n\n\n\n                # Get options that apply to all machines/compilers for this test\n                options = self.get_children(\"options\", root=tnode)\n                if len(options) > 0:\n                    optionnodes = self.get_children(\"option\", root=options[0])\n                else:\n                    optionnodes = []\n                for mach in machnodes:\n                    # this_test_node can include multiple tests\n                    this_test = dict(this_test_node)\n                    for key, value in self.attrib(mach).items():\n                        if key == \"name\":\n                            this_test[\"machine\"] = value\n                        else:\n                            this_test[key] = value\n                    this_test[\"options\"] = {}\n\n                    for onode in optionnodes:\n                        this_test['options'][self.get(onode, 'name')] = self.text(onode)\n\n                    # Now get options specific to this machine/compiler\n                    options = self.get_optional_child(\"options\", root=mach)\n                    optionnodes = [] if options is None else self.get_children(\"option\", root=options)\n                    for onode in optionnodes:\n                        this_test['options'][self.get(onode, 'name')] = self.text(onode)\n\n                    tests.append(this_test)\n\n        return tests\n", "path": "scripts/lib/CIME/XML/testlist.py"}]}