fix(search): initialize options in NewDropIndexBuilder to prevent panic (#4105)

Signed-off-by: Pragalva Sapkota <sapkotapragalva@gmail.com>

search_builders.go

@@ -562,10 +562,10 @@ type DropIndexBuilder struct {
 // NewDropIndexBuilder creates a new DropIndexBuilder for FT.DROPINDEX commands.
 // EXPERIMENTAL: this API is subject to change, use with caution.
 func (c *Client) NewDropIndexBuilder(ctx context.Context, index string) *DropIndexBuilder {
-	return &DropIndexBuilder{c: c, ctx: ctx, index: index}
+	return &DropIndexBuilder{c: c, ctx: ctx, index: index, options: &FTDropIndexOptions{}}
 }
 
-// DeleteRuncs includes DD.
+// DeleteDocs includes DD.
 func (b *DropIndexBuilder) DeleteDocs() *DropIndexBuilder { b.options.DeleteDocs = true; return b }
 
 // Run executes FT.DROPINDEX.

search_commands_unit_test.go

@@ -698,3 +698,13 @@ func TestParseFTHybridWarnings(t *testing.T) {
 		})
 	}
 }
+
+func TestDropIndexBuilderDeleteDocs(t *testing.T) {
+	client := NewClient(&Options{Addr: "localhost:6379"})
+	defer client.Close()
+
+	builder := client.NewDropIndexBuilder(context.Background(), "idx").DeleteDocs()
+	if builder.options == nil || !builder.options.DeleteDocs {
+		t.Fatal("expected DeleteDocs to be true")
+	}
+}