Support lists of values (#15)

docs/plugins/wev-echo.md

@@ -10,9 +10,10 @@
 
 ## Configuration
 
-| Property | Required | Description          |
-|----------|----------|----------------------|
-| value    | ✔️        | Value to resolve to. |
+| Property  | Required | Description                                                                     |
+|-----------|----------|---------------------------------------------------------------------------------|
+| separator | ⨯        | Separator to insert between values when `value` is a list. Defaults to a space. |
+| value     | ✔️        | Value to resolve to. String or list of strings.                                 |
 
 ## Examples
 

wev/wev_echo/plugin.py

@@ -1,6 +1,6 @@
 from datetime import datetime, timedelta
 from logging import Logger
-from typing import List
+from typing import List, Union
 
 from wev.sdk import PluginBase, Resolution, ResolutionSupport
 from wev.sdk.exceptions import MissingConfigurationError
@@ -34,16 +34,27 @@ def resolve(self, support: ResolutionSupport) -> Resolution:
         Returns:
             Resolution.
         """
-        expires_at = datetime.now() + timedelta(seconds=60)
-        support.logger.debug("Calculated expiry date: %s", expires_at)
-        return Resolution.make(value=self.value, expires_at=expires_at)
+        value = (
+            self.value
+            if isinstance(self.value, str)
+            else self.separator.join(self.value)
+        )
+        return Resolution.make(
+            value=value,
+            expires_at=datetime.now() + timedelta(seconds=60),
+        )
 
     @property
-    def value(self) -> str:
-        """
-        Gets the hard-coded value from the configuration.
-        """
+    def separator(self) -> str:
+        """ Gets the single value to return. """
+        return self.get("separator", " ")
+
+    @property
+    def value(self) -> Union[str, List[str]]:
+        """ Gets the single value or list of values to return. """
         try:
+            if isinstance(self["value"], list):
+                return self["value"]
             return str(self["value"])
         except KeyError as ex:
             raise MissingConfigurationError(

wev/wev_echo/test_plugin.py

@@ -1,6 +1,7 @@
 from logging import Logger
+from typing import Any, Dict
 
-from pytest import raises
+from pytest import mark, raises
 
 from wev.sdk import ResolutionSupport
 from wev.sdk.exceptions import MissingConfigurationError
@@ -13,9 +14,20 @@ def test_explain(logger: Logger) -> None:
     ]
 
 
-def test_resolve(resolution_support: ResolutionSupport) -> None:
-    resolution = Plugin({"value": "foo"}).resolve(support=resolution_support)
-    assert resolution.values == ("foo",)
+@mark.parametrize(
+    "d, expect",
+    [
+        ({"value": "foo"}, ("foo",)),
+        ({"value": ["foo", "bar"]}, ("foo bar",)),
+        ({"separator": ".", "value": ["foo", "bar"]}, ("foo.bar",)),
+    ],
+)
+def test_resolve(
+    d: Dict[str, Any],
+    expect: str,
+    resolution_support: ResolutionSupport,
+) -> None:
+    assert Plugin(d).resolve(support=resolution_support).values == expect
 
 
 def test_resolve__missing_config(resolution_support: ResolutionSupport) -> None: