Only support simple WINDOW clause in Spark

Author: nene

src/languages/spark.formatter.ts

@@ -665,7 +665,6 @@ const reservedCommands = [
   'WITH',
   'CLUSTER BY',
   'DISTRIBUTE BY',
-  'PARTITION BY', // verify
   'GROUP BY',
   'HAVING',
   'VALUES',
@@ -711,7 +710,7 @@ const reservedCommands = [
   'INSERT',
   'LATERAL VIEW',
   'UPDATE',
-  'WINDOW', // verify
+  'WINDOW',
 ];
 
 const reservedBinaryCommands = [

test/spark.test.ts

@@ -14,7 +14,6 @@ import supportsStrings from './features/strings';
 import supportsArrayAndMapAccessors from './features/arrayAndMapAccessors';
 import supportsComments from './features/comments';
 import supportsIdentifiers from './features/identifiers';
-import supportsWindow from './features/window';
 
 describe('SparkFormatter', () => {
   const language = 'spark';
@@ -50,7 +49,22 @@ describe('SparkFormatter', () => {
       'NATURAL SEMI JOIN',
     ],
   });
-  supportsWindow(format);
+
+  it('formats basic WINDOW clause', () => {
+    const result = format(`SELECT * FROM tbl WINDOW win1, WINDOW win2, WINDOW win3;`);
+    expect(result).toBe(dedent`
+      SELECT
+        *
+      FROM
+        tbl
+      WINDOW
+        win1,
+      WINDOW
+        win2,
+      WINDOW
+        win3;
+    `);
+  });
 
   it('formats window function and end as inline', () => {
     const result = format(