Allow floating number for console timeout

Two new steps per language: function returning nothing and function
returning explicit nil/None. Both tagged $(test)_PASS — they would
have failed before the lua nil fix (Lua side reported nil result as
error). Python side already worked but is covered for parity.

doc/manual/sphinx/source/test_items/let_test_item.rst

@@ -9,9 +9,9 @@ This element is of the following form:
     - let:
         name: Let Item
         values:
-            key1: value1
-            key2: value2
-            key3: <| $(variable)[$(loop_index)] |>
+            - key1: value1
+            - key2: value2
+            - key3: <| $(variable)[$(loop_index)] |>
 
 The ``let`` element is used to set values in the global directory.
 

doc/manual/sphinx/source/tum_syntax.rst

@@ -51,8 +51,8 @@ The parameter file can be specified in the `.tum` file root:
     :caption: configuration files definition in the main `.tum` test file
 
     config_file:
-        config1.yaml
-        config2.yaml
+        - config1.yaml
+        - config2.yaml
 
     main:
         name: Test example

src/testium/interpreter/test_items/test_item_console.py

@@ -300,7 +300,7 @@ class TestItemConsoleReadUntil(TestItemConsoleAction):
     def execute(self):
         cons = self.get_console()
         ru = self._prms.expanse(self._read_until)
-        read_timeout = int(self._prms.getParam("timeout", default=-1, processed=True))
+        read_timeout = float(self._prms.getParam("timeout", default=-1, processed=True))
         mute = self._prms.getParam("mute", default=False, processed=True)
         if read_timeout < 0:
             read_timeout = None

src/testium/lua_func/json-rpc.lua

@@ -41,8 +41,7 @@ end
 --- INTERNAL: Handle requests from the client
 function JSONRPC:_handle_request(req)
     local method = self.methods[req.method]
-    local ok, ret
-    local res, err
+    local ok, ret, err
     if not method then
         if req.id then self:_send_error(req.id, string.format("Method '%s' not registered in lua server")) end
         return
@@ -52,15 +51,18 @@ function JSONRPC:_handle_request(req)
 
     -- Only send response if it's not a Notification (notifications have no ID)
     if req.id then
-        if ok then
-            res = ret
-            if res == nil then
-                self:_send_error(req.id, tostring(err))
-            else
-                self:_send({ jsonrpc = "2.0", result = { returned_value = res }, id = req.id })
-            end
-        else
+        if not ok then
+            -- pcall trapped a runtime error in the method itself.
+            self:_send_error(req.id, tostring(ret))
+        elseif err ~= nil then
+            -- Method ran but signaled a logical error via its 2nd return.
             self:_send_error(req.id, tostring(err))
+        else
+            -- Success. A user function returning nothing yields ret==nil;
+            -- encode it as JSON null so "returned_value" stays present.
+            local val = ret
+            if val == nil then val = json.null end
+            self:_send({ jsonrpc = "2.0", result = { returned_value = val }, id = req.id })
         end
     end
 end

test/validation/items/console/test.tum

@@ -84,7 +84,18 @@
         - read_until: {expected: HelloConsole, timeout: 1, mute: true}
 
 - console:
-    name: Console read_until muted
+    name: Console read_until float timeout
+    console_name: term
+    key: $(test)_PASS
+    steps:
+        - writeln: echo "HelloConsole"
+{% if os == "Windows" %}
+        - read_until: {expected: echo "HelloConsole", timeout: 0.2}
+{% endif %}
+        - read_until: {expected: HelloConsole, timeout: 0.2}
+
+- console:
+    name: Console read_until process result
     console_name: term
     key: $(test)_PASS
     steps:

test/validation/items/let/test.tum

@@ -11,8 +11,8 @@
         - let:
             name:  Let it be
             values:
-                it: $(loop_param)
-                be: <| $(loop_param) == $(it) |>
+                - it: $(loop_param)
+                - be: <| $(loop_param) == $(it) |>
 
 - loop:
     name: Cycle iterating on list

test/validation/items/lua_func/lua_func.lua

@@ -49,4 +49,12 @@ function module.test_delgd()
     return 0
 end
 
+function module.return_nothing()
+    -- Returns no value: ret is nil but no error.
+end
+
+function module.return_explicit_nil()
+    return nil
+end
+
 return module

test/validation/items/lua_func/test.tum

@@ -1,7 +1,7 @@
 - let:
     name: lua_func test constants,
     values:
-      lua_func test parameter: test parameter lua_func
+      - lua_func test parameter: test parameter lua_func
 
 - lua_func:
     name: fail lua_func
@@ -186,6 +186,18 @@
     file: $(test_path)$(psep)lua_func.lua
     func_name: test_delgd
 
+- lua_func:
+    name: function returning nothing should succeed
+    key: $(test)_PASS
+    file: $(test_path)$(psep)lua_func.lua
+    func_name: return_nothing
+
+- lua_func:
+    name: function returning explicit nil should succeed
+    key: $(test)_PASS
+    file: $(test_path)$(psep)lua_func.lua
+    func_name: return_explicit_nil
+
 - group:
     name: context_id tests
     steps:

test/validation/items/py_func/py_func.py

@@ -54,3 +54,10 @@ def test_delgd():
     tm.delgd("_py_delgd_test")
     assert tm.gd("_py_delgd_test", None) is None
     return 0
+
+def return_nothing():
+    # Falls off the end: implicit None return, no error.
+    pass
+
+def return_explicit_none():
+    return None

test/validation/items/py_func/test.tum

@@ -1,7 +1,7 @@
 - let:
     name: py_func test constants,
     values:
-      py_func test parameter: test parameter
+      - py_func test parameter: test parameter
 
 - py_func:
     name: pass py_func
@@ -196,6 +196,18 @@
     file: $(test_path)$(psep)py_func.py
     func_name: test_delgd
 
+- py_func:
+    name: function returning nothing should succeed
+    key: $(test)_PASS
+    file: $(test_path)$(psep)py_func.py
+    func_name: return_nothing
+
+- py_func:
+    name: function returning explicit None should succeed
+    key: $(test)_PASS
+    file: $(test_path)$(psep)py_func.py
+    func_name: return_explicit_none
+
 - group:
     name: context_id tests
     steps:

test/validation/main.tum

@@ -31,7 +31,11 @@ main:
 
 {% for item in items %}
                 # item test
-                - let: {name: {{ item }} test constants, values: {test: {{ item }}, test_path: items/$(test)}}
+                - let: 
+                    name: {{ item }} test constants
+                    values: 
+                        - test: {{ item }}
+                        - test_path: items/$(test)
                 - group:
                     name: {{ item }} test
                     steps: