rust(fix): allow partial sift-cli config updates (#556)

Author: wei-qlu

rust/crates/sift_cli/src/cmd/config.rs …st/crates/sift_cli/src/cmd/config/mod.rsrust/crates/sift_cli/src/cmd/config.rs renamed to rust/crates/sift_cli/src/cmd/config/mod.rs rust/crates/sift_cli/src/cmd/config.rs renamed to rust/crates/sift_cli/src/cmd/config/mod.rs

@@ -1,3 +1,6 @@
+#[cfg(test)]
+mod tests;
+
 use crate::BIN_NAME;
 use anyhow::{Context, Result, anyhow};
 use crossterm::style::Stylize;
@@ -205,6 +208,6 @@ fn is_update_empty(args: &ConfigUpdateArgs) -> bool {
         ..
     } = args;
     grpc_uri.as_ref().is_none_or(|s| s.is_empty())
-        || rest_uri.as_ref().is_none_or(|s| s.is_empty())
-        || api_key.as_ref().is_none_or(|s| s.is_empty())
+        && rest_uri.as_ref().is_none_or(|s| s.is_empty())
+        && api_key.as_ref().is_none_or(|s| s.is_empty())
 }

rust/crates/sift_cli/src/cmd/config/tests.rs

@@ -0,0 +1,39 @@
+mod test_is_update_empty {
+    use super::super::is_update_empty;
+    use crate::cli::ConfigUpdateArgs;
+
+    fn args(
+        grpc_uri: Option<&str>,
+        rest_uri: Option<&str>,
+        api_key: Option<&str>,
+    ) -> ConfigUpdateArgs {
+        ConfigUpdateArgs {
+            interactive: false,
+            grpc_uri: grpc_uri.map(String::from),
+            rest_uri: rest_uri.map(String::from),
+            api_key: api_key.map(String::from),
+        }
+    }
+
+    #[test]
+    fn no_flags_is_empty() {
+        assert!(is_update_empty(&args(None, None, None)));
+    }
+
+    #[test]
+    fn all_empty_strings_is_empty() {
+        assert!(is_update_empty(&args(Some(""), Some(""), Some(""))));
+    }
+
+    #[test]
+    fn any_single_flag_is_not_empty() {
+        assert!(!is_update_empty(&args(Some("g"), None, None)));
+        assert!(!is_update_empty(&args(None, Some("r"), None)));
+        assert!(!is_update_empty(&args(None, None, Some("k"))));
+    }
+
+    #[test]
+    fn all_flags_set_is_not_empty() {
+        assert!(!is_update_empty(&args(Some("g"), Some("r"), Some("k"))));
+    }
+}