remove ppl agg func snippets and update ppl field name test

Signed-off-by: Paul Sebastian <[email protected]>

src/plugins/data/public/antlr/opensearch_ppl/code_completion.ts

@@ -65,18 +65,10 @@ export const getSuggestions = async ({
         ...PPL_AGGREGATE_FUNCTIONS.map((af) => ({
           text: `${af}()`,
           type: monaco.languages.CompletionItemKind.Function,
-          insertText: af + '(${1:expr}) ',
+          insertText: af + ' ',
           detail: SuggestionItemDetailsTags.AggregateFunction,
-          insertTextRules: monaco.languages.CompletionItemInsertTextRule.InsertAsSnippet,
         }))
       );
-      // separately include count as there will be nothing within the parens
-      finalSuggestions.push({
-        text: `count()`,
-        type: monaco.languages.CompletionItemKind.Function,
-        insertText: 'count() ',
-        detail: SuggestionItemDetailsTags.AggregateFunction,
-      });
     }
 
     if (suggestions.suggestSourcesOrTables) {

src/plugins/data/public/antlr/opensearch_ppl/constants.ts

@@ -7,6 +7,7 @@ import { OpenSearchPPLParser } from './.generated/OpenSearchPPLParser';
 
 export const PPL_AGGREGATE_FUNCTIONS = [
   'avg',
+  'count',
   'sum',
   'min',
   'max',

src/plugins/data/public/antlr/opensearch_ppl/opensearch_ppl_autocomplete.test.ts

@@ -48,7 +48,10 @@ describe('processVisitedRules', () => {
     const mockRules = new Map();
     mockRules.set(OpenSearchPPLParser.RULE_statsFunctionName, {});
     mockRules.set(OpenSearchPPLParser.RULE_fieldExpression, {});
-    const tokenStream = createTokenStream([1]);
+    const tokenStream = createTokenStream([
+      { type: 1, text: 'SPACE' },
+      { type: 1, text: 'SPACE' },
+    ]);
 
     const result = processVisitedRules(mockRules, 2, tokenStream);
     expect(result.suggestAggregateFunctions).toBeDefined();