test(protocols,skills): add 90 tests for MCP types + skill loader/runner

zclaw-protocols: +43 tests covering mcp_types serde, ContentBlock
variants, transport config builders, and domain type roundtrips.

zclaw-skills: +47 tests covering SKILL.md/TOML parsing, auto-classify,
PromptOnlySkill execution, and SkillManifest/SkillResult roundtrips.

Batch 8 of audit plan (plans/stateless-petting-rossum.md).

crates/zclaw-protocols/tests/mcp_transport_tests.rs

@@ -0,0 +1,55 @@
+//! Tests for MCP Transport configuration (McpServerConfig)
+//!
+//! These tests cover McpServerConfig builder methods without spawning processes.
+
+use std::collections::HashMap;
+use zclaw_protocols::McpServerConfig;
+
+#[test]
+fn npx_config_creates_correct_command() {
+    let config = McpServerConfig::npx("@modelcontextprotocol/server-memory");
+    assert_eq!(config.command, "npx");
+    assert_eq!(config.args, vec!["-y", "@modelcontextprotocol/server-memory"]);
+    assert!(config.env.is_empty());
+    assert!(config.cwd.is_none());
+}
+
+#[test]
+fn node_config_creates_correct_command() {
+    let config = McpServerConfig::node("/path/to/server.js");
+    assert_eq!(config.command, "node");
+    assert_eq!(config.args, vec!["/path/to/server.js"]);
+}
+
+#[test]
+fn python_config_creates_correct_command() {
+    let config = McpServerConfig::python("mcp_server.py");
+    assert_eq!(config.command, "python");
+    assert_eq!(config.args, vec!["mcp_server.py"]);
+}
+
+#[test]
+fn env_adds_variables() {
+    let config = McpServerConfig::node("server.js")
+        .env("API_KEY", "secret123")
+        .env("DEBUG", "true");
+    assert_eq!(config.env.get("API_KEY").unwrap(), "secret123");
+    assert_eq!(config.env.get("DEBUG").unwrap(), "true");
+}
+
+#[test]
+fn cwd_sets_working_directory() {
+    let config = McpServerConfig::node("server.js").cwd("/tmp/work");
+    assert_eq!(config.cwd.unwrap(), "/tmp/work");
+}
+
+#[test]
+fn combined_builder_pattern() {
+    let config = McpServerConfig::npx("@scope/server")
+        .env("PORT", "3000")
+        .cwd("/app");
+    assert_eq!(config.command, "npx");
+    assert_eq!(config.args.len(), 2);
+    assert_eq!(config.env.len(), 1);
+    assert_eq!(config.cwd.unwrap(), "/app");
+}

crates/zclaw-protocols/tests/mcp_types_domain_tests.rs

@@ -0,0 +1,186 @@
+//! Tests for MCP domain types (mcp.rs) — McpTool, McpContent, McpResource, etc.
+
+use std::collections::HashMap;
+use zclaw_protocols::*;
+
+// === McpTool ===
+
+#[test]
+fn mcp_tool_roundtrip() {
+    let tool = McpTool {
+        name: "search".to_string(),
+        description: "Search documents".to_string(),
+        input_schema: serde_json::json!({"type": "object", "properties": {"query": {"type": "string"}}}),
+    };
+    let json = serde_json::to_string(&tool).unwrap();
+    let parsed: McpTool = serde_json::from_str(&json).unwrap();
+    assert_eq!(parsed.name, "search");
+    assert_eq!(parsed.description, "Search documents");
+}
+
+#[test]
+fn mcp_tool_empty_description() {
+    let tool = McpTool {
+        name: "ping".to_string(),
+        description: String::new(),
+        input_schema: serde_json::json!({}),
+    };
+    let parsed: McpTool = serde_json::from_str(&serde_json::to_string(&tool).unwrap()).unwrap();
+    assert!(parsed.description.is_empty());
+}
+
+// === McpContent ===
+
+#[test]
+fn mcp_content_text_roundtrip() {
+    let content = McpContent::Text { text: "hello".to_string() };
+    let json = serde_json::to_string(&content).unwrap();
+    let parsed: McpContent = serde_json::from_str(&json).unwrap();
+    match parsed {
+        McpContent::Text { text } => assert_eq!(text, "hello"),
+        _ => panic!("Expected Text"),
+    }
+}
+
+#[test]
+fn mcp_content_image_roundtrip() {
+    let content = McpContent::Image {
+        data: "base64==".to_string(),
+        mime_type: "image/png".to_string(),
+    };
+    let json = serde_json::to_string(&content).unwrap();
+    let parsed: McpContent = serde_json::from_str(&json).unwrap();
+    match parsed {
+        McpContent::Image { data, mime_type } => {
+            assert_eq!(data, "base64==");
+            assert_eq!(mime_type, "image/png");
+        }
+        _ => panic!("Expected Image"),
+    }
+}
+
+#[test]
+fn mcp_content_resource_roundtrip() {
+    let content = McpContent::Resource {
+        resource: McpResourceContent {
+            uri: "file:///test.txt".to_string(),
+            mime_type: Some("text/plain".to_string()),
+            text: Some("content".to_string()),
+            blob: None,
+        },
+    };
+    let json = serde_json::to_string(&content).unwrap();
+    let parsed: McpContent = serde_json::from_str(&json).unwrap();
+    match parsed {
+        McpContent::Resource { resource } => {
+            assert_eq!(resource.uri, "file:///test.txt");
+            assert_eq!(resource.text.unwrap(), "content");
+        }
+        _ => panic!("Expected Resource"),
+    }
+}
+
+// === McpToolCallRequest ===
+
+#[test]
+fn mcp_tool_call_request_serialization() {
+    let mut args = HashMap::new();
+    args.insert("query".to_string(), serde_json::json!("test"));
+    let req = McpToolCallRequest {
+        name: "search".to_string(),
+        arguments: args,
+    };
+    let json = serde_json::to_string(&req).unwrap();
+    assert!(json.contains("\"name\":\"search\""));
+    assert!(json.contains("\"query\":\"test\""));
+}
+
+// === McpToolCallResponse ===
+
+#[test]
+fn mcp_tool_call_response_parse_success() {
+    let json = r#"{"content":[{"type":"text","text":"found 3 results"}],"is_error":false}"#;
+    let resp: McpToolCallResponse = serde_json::from_str(json).unwrap();
+    assert!(!resp.is_error);
+    assert_eq!(resp.content.len(), 1);
+}
+
+#[test]
+fn mcp_tool_call_response_parse_error() {
+    let json = r#"{"content":[{"type":"text","text":"tool not found"}],"is_error":true}"#;
+    let resp: McpToolCallResponse = serde_json::from_str(json).unwrap();
+    assert!(resp.is_error);
+}
+
+// === McpResource ===
+
+#[test]
+fn mcp_resource_roundtrip() {
+    let res = McpResource {
+        uri: "file:///doc.md".to_string(),
+        name: "Documentation".to_string(),
+        description: Some("Project docs".to_string()),
+        mime_type: Some("text/markdown".to_string()),
+    };
+    let json = serde_json::to_string(&res).unwrap();
+    let parsed: McpResource = serde_json::from_str(&json).unwrap();
+    assert_eq!(parsed.uri, "file:///doc.md");
+    assert_eq!(parsed.description.unwrap(), "Project docs");
+}
+
+// === McpPrompt ===
+
+#[test]
+fn mcp_prompt_roundtrip() {
+    let prompt = McpPrompt {
+        name: "summarize".to_string(),
+        description: "Summarize text".to_string(),
+        arguments: vec![
+            McpPromptArgument {
+                name: "length".to_string(),
+                description: "Target length".to_string(),
+                required: false,
+            },
+        ],
+    };
+    let json = serde_json::to_string(&prompt).unwrap();
+    let parsed: McpPrompt = serde_json::from_str(&json).unwrap();
+    assert_eq!(parsed.arguments.len(), 1);
+    assert!(!parsed.arguments[0].required);
+}
+
+// === McpServerInfo ===
+
+#[test]
+fn mcp_server_info_roundtrip() {
+    let info = McpServerInfo {
+        name: "test-mcp".to_string(),
+        version: "2.0.0".to_string(),
+        protocol_version: "2024-11-05".to_string(),
+    };
+    let json = serde_json::to_string(&info).unwrap();
+    let parsed: McpServerInfo = serde_json::from_str(&json).unwrap();
+    assert_eq!(parsed.name, "test-mcp");
+    assert_eq!(parsed.protocol_version, "2024-11-05");
+}
+
+// === McpCapabilities ===
+
+#[test]
+fn mcp_capabilities_default_empty() {
+    let caps = McpCapabilities::default();
+    assert!(caps.tools.is_none());
+    assert!(caps.resources.is_none());
+    assert!(caps.prompts.is_none());
+}
+
+#[test]
+fn mcp_capabilities_with_tools() {
+    let caps = McpCapabilities {
+        tools: Some(McpToolCapabilities { list_changed: true }),
+        resources: None,
+        prompts: None,
+    };
+    let json = serde_json::to_string(&caps).unwrap();
+    assert!(json.contains("\"list_changed\":true"));
+}

crates/zclaw-protocols/tests/mcp_types_tests.rs

@@ -0,0 +1,267 @@
+//! Tests for MCP JSON-RPC types (mcp_types.rs)
+//!
+//! Covers: serialization, deserialization, builder patterns, edge cases.
+
+use serde_json;
+use zclaw_protocols::*;
+
+// === JsonRpcRequest ===
+
+#[test]
+fn jsonrpc_request_new_has_correct_defaults() {
+    let req = JsonRpcRequest::new(42, "tools/list");
+    assert_eq!(req.jsonrpc, "2.0");
+    assert_eq!(req.id, 42);
+    assert_eq!(req.method, "tools/list");
+    assert!(req.params.is_none());
+}
+
+#[test]
+fn jsonrpc_request_with_params() {
+    let req = JsonRpcRequest::new(1, "tools/call")
+        .with_params(serde_json::json!({"name": "search"}));
+    let serialized = serde_json::to_string(&req).unwrap();
+    assert!(serialized.contains("\"params\""));
+    assert!(serialized.contains("\"name\":\"search\""));
+}
+
+#[test]
+fn jsonrpc_request_skip_null_params() {
+    let req = JsonRpcRequest::new(1, "ping");
+    let serialized = serde_json::to_string(&req).unwrap();
+    // params is None, should be skipped
+    assert!(!serialized.contains("\"params\""));
+}
+
+// === JsonRpcResponse ===
+
+#[test]
+fn jsonrpc_response_parse_success() {
+    let json = r#"{"jsonrpc":"2.0","id":1,"result":{"tools":[]}}"#;
+    let resp: JsonRpcResponse = serde_json::from_str(json).unwrap();
+    assert_eq!(resp.id, 1);
+    assert!(resp.result.is_some());
+    assert!(resp.error.is_none());
+}
+
+#[test]
+fn jsonrpc_response_parse_error() {
+    let json = r#"{"jsonrpc":"2.0","id":2,"error":{"code":-32600,"message":"Invalid Request"}}"#;
+    let resp: JsonRpcResponse = serde_json::from_str(json).unwrap();
+    assert_eq!(resp.id, 2);
+    assert!(resp.result.is_none());
+    let err = resp.error.unwrap();
+    assert_eq!(err.code, -32600);
+    assert_eq!(err.message, "Invalid Request");
+}
+
+#[test]
+fn jsonrpc_response_parse_error_with_data() {
+    let json = r#"{"jsonrpc":"2.0","id":3,"error":{"code":-32602,"message":"Bad params","data":{"field":"uri"}}}"#;
+    let resp: JsonRpcResponse = serde_json::from_str(json).unwrap();
+    let err = resp.error.unwrap();
+    assert!(err.data.is_some());
+    assert_eq!(err.data.unwrap()["field"], "uri");
+}
+
+// === InitializeRequest ===
+
+#[test]
+fn initialize_request_default() {
+    let req = InitializeRequest::default();
+    assert_eq!(req.protocol_version, "2024-11-05");
+    assert_eq!(req.client_info.name, "zclaw");
+    assert!(!req.client_info.version.is_empty());
+}
+
+#[test]
+fn initialize_request_serializes() {
+    let req = InitializeRequest::default();
+    let json = serde_json::to_string(&req).unwrap();
+    assert!(json.contains("\"protocol_version\":\"2024-11-05\""));
+    assert!(json.contains("\"client_info\""));
+}
+
+// === ServerCapabilities ===
+
+#[test]
+fn server_capabilities_empty() {
+    let json = r#"{"protocol_version":"2024-11-05","capabilities":{},"server_info":{"name":"test","version":"1.0"}}"#;
+    let result: InitializeResult = serde_json::from_str(json).unwrap();
+    assert!(result.capabilities.tools.is_none());
+    assert!(result.capabilities.resources.is_none());
+}
+
+#[test]
+fn server_capabilities_with_tools() {
+    let json = r#"{"protocol_version":"2024-11-05","capabilities":{"tools":{"list_changed":true}},"server_info":{"name":"test","version":"1.0"}}"#;
+    let result: InitializeResult = serde_json::from_str(json).unwrap();
+    let tools = result.capabilities.tools.unwrap();
+    assert!(tools.list_changed);
+}
+
+// === ContentBlock ===
+
+#[test]
+fn content_block_text() {
+    let json = r#"{"type":"text","text":"hello world"}"#;
+    let block: ContentBlock = serde_json::from_str(json).unwrap();
+    match block {
+        ContentBlock::Text { text } => assert_eq!(text, "hello world"),
+        _ => panic!("Expected Text variant"),
+    }
+}
+
+#[test]
+fn content_block_image() {
+    let json = r#"{"type":"image","data":"base64data","mime_type":"image/png"}"#;
+    let block: ContentBlock = serde_json::from_str(json).unwrap();
+    match block {
+        ContentBlock::Image { data, mime_type } => {
+            assert_eq!(data, "base64data");
+            assert_eq!(mime_type, "image/png");
+        }
+        _ => panic!("Expected Image variant"),
+    }
+}
+
+#[test]
+fn content_block_resource() {
+    let json = r#"{"type":"resource","resource":{"uri":"file:///test.txt","text":"content"}}"#;
+    let block: ContentBlock = serde_json::from_str(json).unwrap();
+    match block {
+        ContentBlock::Resource { resource } => {
+            assert_eq!(resource.uri, "file:///test.txt");
+            assert_eq!(resource.text.unwrap(), "content");
+        }
+        _ => panic!("Expected Resource variant"),
+    }
+}
+
+// === CallToolResult ===
+
+#[test]
+fn call_tool_result_parse() {
+    let json = r#"{"content":[{"type":"text","text":"result"}],"is_error":false}"#;
+    let result: CallToolResult = serde_json::from_str(json).unwrap();
+    assert!(!result.is_error);
+    assert_eq!(result.content.len(), 1);
+}
+
+#[test]
+fn call_tool_result_error() {
+    let json = r#"{"content":[{"type":"text","text":"something went wrong"}],"is_error":true}"#;
+    let result: CallToolResult = serde_json::from_str(json).unwrap();
+    assert!(result.is_error);
+}
+
+// === ListToolsResult ===
+
+#[test]
+fn list_tools_result_with_cursor() {
+    let json = r#"{"tools":[{"name":"search","input_schema":{"type":"object"}}],"next_cursor":"abc123"}"#;
+    let result: ListToolsResult = serde_json::from_str(json).unwrap();
+    assert_eq!(result.tools.len(), 1);
+    assert_eq!(result.tools[0].name, "search");
+    assert_eq!(result.next_cursor.unwrap(), "abc123");
+}
+
+#[test]
+fn list_tools_result_without_cursor() {
+    let json = r#"{"tools":[]}"#;
+    let result: ListToolsResult = serde_json::from_str(json).unwrap();
+    assert!(result.tools.is_empty());
+    assert!(result.next_cursor.is_none());
+}
+
+// === Resource types ===
+
+#[test]
+fn resource_parse_with_optional_fields() {
+    let json = r#"{"uri":"file:///doc.txt","name":"doc","description":"A doc","mime_type":"text/plain"}"#;
+    let res: Resource = serde_json::from_str(json).unwrap();
+    assert_eq!(res.uri, "file:///doc.txt");
+    assert_eq!(res.name, "doc");
+    assert_eq!(res.description.unwrap(), "A doc");
+    assert_eq!(res.mime_type.unwrap(), "text/plain");
+}
+
+#[test]
+fn resource_parse_minimal() {
+    let json = r#"{"uri":"file:///x","name":"x"}"#;
+    let res: Resource = serde_json::from_str(json).unwrap();
+    assert!(res.description.is_none());
+    assert!(res.mime_type.is_none());
+}
+
+// === LoggingLevel ===
+
+#[test]
+fn logging_level_serialize_roundtrip() {
+    let levels = vec![
+        LoggingLevel::Debug,
+        LoggingLevel::Info,
+        LoggingLevel::Warning,
+        LoggingLevel::Error,
+        LoggingLevel::Critical,
+        LoggingLevel::Emergency,
+    ];
+    for level in levels {
+        let json = serde_json::to_string(&level).unwrap();
+        let parsed: LoggingLevel = serde_json::from_str(&json).unwrap();
+        assert_eq!(std::mem::discriminant(&level), std::mem::discriminant(&parsed));
+    }
+}
+
+// === InitializedNotification ===
+
+#[test]
+fn initialized_notification_fields() {
+    let n = InitializedNotification::new();
+    assert_eq!(n.jsonrpc, "2.0");
+    assert_eq!(n.method, "notifications/initialized");
+}
+
+#[test]
+fn initialized_notification_serializes() {
+    let n = InitializedNotification::default();
+    let json = serde_json::to_string(&n).unwrap();
+    assert!(json.contains("\"notifications/initialized\""));
+}
+
+// === Prompt types ===
+
+#[test]
+fn prompt_parse_with_arguments() {
+    let json = r#"{"name":"greet","description":"Greeting","arguments":[{"name":"lang","description":"Language","required":true}]}"#;
+    let prompt: Prompt = serde_json::from_str(json).unwrap();
+    assert_eq!(prompt.name, "greet");
+    assert_eq!(prompt.arguments.len(), 1);
+    assert!(prompt.arguments[0].required);
+}
+
+#[test]
+fn prompt_message_parse() {
+    let json = r#"{"role":"user","content":{"type":"text","text":"hello"}}"#;
+    let msg: PromptMessage = serde_json::from_str(json).unwrap();
+    assert_eq!(msg.role, "user");
+}
+
+// === McpClientConfig ===
+
+#[test]
+fn mcp_client_config_roundtrip() {
+    let config = McpClientConfig {
+        server_url: "http://localhost:3000".to_string(),
+        server_info: McpServerInfo {
+            name: "test-server".to_string(),
+            version: "1.0.0".to_string(),
+            protocol_version: "2024-11-05".to_string(),
+        },
+        capabilities: McpCapabilities::default(),
+    };
+    let json = serde_json::to_string(&config).unwrap();
+    let parsed: McpClientConfig = serde_json::from_str(&json).unwrap();
+    assert_eq!(parsed.server_url, config.server_url);
+    assert_eq!(parsed.server_info.name, "test-server");
+}

crates/zclaw-skills/tests/loader_tests.rs

@@ -0,0 +1,247 @@
+//! Tests for skill loader — SKILL.md and TOML parsing
+
+use zclaw_skills::*;
+
+// === parse_skill_md ===
+
+#[test]
+fn parse_skill_md_basic_frontmatter() {
+    let content = r#"---
+name: "Code Reviewer"
+description: "Reviews code"
+version: "1.0.0"
+mode: prompt-only
+tags: coding, review
+---
+# Code Reviewer
+Reviews code for quality.
+"#;
+    let manifest = parse_skill_md(content).unwrap();
+    assert_eq!(manifest.name, "Code Reviewer");
+    assert_eq!(manifest.description, "Reviews code");
+    assert_eq!(manifest.version, "1.0.0");
+    assert_eq!(manifest.mode, zclaw_skills::SkillMode::PromptOnly);
+    assert_eq!(manifest.tags, vec!["coding", "review"]);
+}
+
+#[test]
+fn parse_skill_md_with_triggers_list() {
+    let content = r#"---
+name: "Translator"
+description: "Translates text"
+version: "1.0.0"
+mode: prompt-only
+triggers:
+  - "翻译"
+  - "translate"
+  - "中译英"
+---
+# Translator
+"#;
+    let manifest = parse_skill_md(content).unwrap();
+    assert_eq!(manifest.triggers, vec!["翻译", "translate", "中译英"]);
+}
+
+#[test]
+fn parse_skill_md_with_tools_list() {
+    let content = r#"---
+name: "Builder"
+description: "Builds projects"
+version: "1.0.0"
+mode: shell
+tools:
+  - "bash"
+  - "cargo"
+---
+# Builder
+"#;
+    let manifest = parse_skill_md(content).unwrap();
+    assert_eq!(manifest.tools, vec!["bash", "cargo"]);
+    assert_eq!(manifest.mode, zclaw_skills::SkillMode::Shell);
+}
+
+#[test]
+fn parse_skill_md_with_category() {
+    let content = r#"---
+name: "Math Solver"
+description: "Solves math problems"
+version: "1.0.0"
+mode: prompt-only
+category: "math"
+---
+# Math Solver
+"#;
+    let manifest = parse_skill_md(content).unwrap();
+    assert_eq!(manifest.category.unwrap(), "math");
+}
+
+#[test]
+fn parse_skill_md_auto_classify_coding() {
+    let content = r#"---
+name: "Code Helper"
+description: "Helps with programming and debugging"
+version: "1.0.0"
+mode: prompt-only
+---
+# Code Helper
+"#;
+    let manifest = parse_skill_md(content).unwrap();
+    // Should auto-classify as "coding" based on description
+    assert_eq!(manifest.category.unwrap(), "coding");
+}
+
+#[test]
+fn parse_skill_md_auto_classify_translation() {
+    let content = r#"---
+name: "Translator"
+description: "Helps with translation between languages"
+version: "1.0.0"
+mode: prompt-only
+---
+# Translator
+"#;
+    let manifest = parse_skill_md(content).unwrap();
+    // Should auto-classify based on "translat" keyword
+    assert!(manifest.category.is_some(), "Should auto-classify translation skill");
+}
+
+#[test]
+fn parse_skill_md_no_frontmatter_extracts_name() {
+    let content = "# My Skill\n\nThis is a cool skill.";
+    let manifest = parse_skill_md(content).unwrap();
+    assert_eq!(manifest.name, "My Skill");
+}
+
+#[test]
+fn parse_skill_md_fallback_name() {
+    let content = "Just some text without structure.";
+    let manifest = parse_skill_md(content).unwrap();
+    assert_eq!(manifest.name, "unnamed-skill");
+}
+
+#[test]
+fn parse_skill_md_id_generation() {
+    let content = "---\nname: \"Hello World\"\n---\n";
+    let manifest = parse_skill_md(content).unwrap();
+    assert_eq!(manifest.id.as_str(), "hello-world");
+}
+
+#[test]
+fn parse_skill_md_all_modes() {
+    for (mode_str, expected) in &[
+        ("prompt-only", zclaw_skills::SkillMode::PromptOnly),
+        ("python", zclaw_skills::SkillMode::Python),
+        ("shell", zclaw_skills::SkillMode::Shell),
+        ("wasm", zclaw_skills::SkillMode::Wasm),
+        ("native", zclaw_skills::SkillMode::Native),
+    ] {
+        let content = format!("---\nname: \"Test\"\nmode: {}\n---\n", mode_str);
+        let manifest = parse_skill_md(&content).unwrap();
+        assert_eq!(&manifest.mode, expected, "Failed for mode: {}", mode_str);
+    }
+}
+
+#[test]
+fn parse_skill_md_capabilities_csv() {
+    let content = "---\nname: \"Multi\"\ncapabilities: llm, web, file\n---\n";
+    let manifest = parse_skill_md(content).unwrap();
+    assert_eq!(manifest.capabilities, vec!["llm", "web", "file"]);
+}
+
+// === parse_skill_toml ===
+
+#[test]
+fn parse_skill_toml_basic() {
+    let content = r#"
+name = "Calculator"
+description = "Performs calculations"
+version = "2.0.0"
+mode = "prompt_only"
+"#;
+    let manifest = parse_skill_toml(content).unwrap();
+    assert_eq!(manifest.name, "Calculator");
+    assert_eq!(manifest.description, "Performs calculations");
+    assert_eq!(manifest.version, "2.0.0");
+}
+
+#[test]
+fn parse_skill_toml_with_id() {
+    let content = r#"
+id = "my-calc"
+name = "Calculator"
+description = "Calc"
+"#;
+    let manifest = parse_skill_toml(content).unwrap();
+    assert_eq!(manifest.id.as_str(), "my-calc");
+}
+
+#[test]
+fn parse_skill_toml_generates_id_from_name() {
+    let content = "name = \"Hello World\"\ndescription = \"x\"";
+    let manifest = parse_skill_toml(content).unwrap();
+    assert_eq!(manifest.id.as_str(), "hello-world");
+}
+
+#[test]
+fn parse_skill_toml_requires_name() {
+    let content = r#"description = "no name""#;
+    let result = parse_skill_toml(content);
+    assert!(result.is_err());
+}
+
+#[test]
+fn parse_skill_toml_arrays() {
+    let content = r#"
+name = "X"
+description = "x"
+tags = ["a", "b", "c"]
+capabilities = ["llm"]
+triggers = ["go", "run"]
+"#;
+    let manifest = parse_skill_toml(content).unwrap();
+    assert_eq!(manifest.tags, vec!["a", "b", "c"]);
+    assert_eq!(manifest.capabilities, vec!["llm"]);
+    assert_eq!(manifest.triggers, vec!["go", "run"]);
+}
+
+#[test]
+fn parse_skill_toml_category() {
+    let content = r#"
+name = "X"
+description = "x"
+category = "data"
+"#;
+    let manifest = parse_skill_toml(content).unwrap();
+    assert_eq!(manifest.category.unwrap(), "data");
+}
+
+#[test]
+fn parse_skill_toml_tools() {
+    let content = r#"
+name = "X"
+description = "x"
+tools = ["bash", "cargo"]
+"#;
+    let manifest = parse_skill_toml(content).unwrap();
+    assert_eq!(manifest.tools, vec!["bash", "cargo"]);
+}
+
+#[test]
+fn parse_skill_toml_ignores_comments_and_sections() {
+    let content = r#"
+# This is a comment
+[section]
+name = "X"
+description = "x"
+"#;
+    let manifest = parse_skill_toml(content).unwrap();
+    assert_eq!(manifest.name, "X");
+}
+
+// === discover_skills ===
+
+#[test]
+fn discover_skills_nonexistent_dir() {
+    let result = discover_skills(std::path::Path::new("/nonexistent/path")).unwrap();
+    assert!(result.is_empty());
+}

crates/zclaw-skills/tests/runner_tests.rs

@@ -0,0 +1,78 @@
+//! Tests for PromptOnlySkill runner
+
+use zclaw_skills::*;
+use zclaw_types::SkillId;
+
+/// Helper to create a minimal manifest
+fn test_manifest(mode: SkillMode) -> SkillManifest {
+    SkillManifest {
+        id: SkillId::new("test-prompt-skill"),
+        name: "Test Prompt Skill".to_string(),
+        description: "A test prompt skill".to_string(),
+        version: "1.0.0".to_string(),
+        author: None,
+        mode,
+        capabilities: vec![],
+        input_schema: None,
+        output_schema: None,
+        tags: vec![],
+        category: None,
+        triggers: vec![],
+        tools: vec![],
+        enabled: true,
+    }
+}
+
+#[tokio::test]
+async fn prompt_only_skill_returns_formatted_prompt() {
+    let manifest = test_manifest(SkillMode::PromptOnly);
+    let template = "Hello {{input}}, welcome!".to_string();
+    let skill = PromptOnlySkill::new(manifest, template);
+
+    let ctx = SkillContext::default();
+    let skill_ref: &dyn Skill = &skill;
+    let result = skill_ref.execute(&ctx, serde_json::json!("World")).await.unwrap();
+
+    assert!(result.success);
+    let output = result.output.as_str().unwrap();
+    assert_eq!(output, "Hello World, welcome!");
+}
+
+#[tokio::test]
+async fn prompt_only_skill_json_input() {
+    let manifest = test_manifest(SkillMode::PromptOnly);
+    let template = "Input: {{input}}".to_string();
+    let skill = PromptOnlySkill::new(manifest, template);
+
+    let ctx = SkillContext::default();
+    let input = serde_json::json!({"key": "value"});
+    let skill_ref: &dyn Skill = &skill;
+    let result = skill_ref.execute(&ctx, input).await.unwrap();
+
+    assert!(result.success);
+    let output = result.output.as_str().unwrap();
+    assert!(output.contains("key"));
+    assert!(output.contains("value"));
+}
+
+#[tokio::test]
+async fn prompt_only_skill_no_placeholder() {
+    let manifest = test_manifest(SkillMode::PromptOnly);
+    let template = "Static prompt content".to_string();
+    let skill = PromptOnlySkill::new(manifest, template);
+
+    let ctx = SkillContext::default();
+    let skill_ref: &dyn Skill = &skill;
+    let result = skill_ref.execute(&ctx, serde_json::json!("ignored")).await.unwrap();
+
+    assert!(result.success);
+    assert_eq!(result.output.as_str().unwrap(), "Static prompt content");
+}
+
+#[tokio::test]
+async fn prompt_only_skill_manifest() {
+    let manifest = test_manifest(SkillMode::PromptOnly);
+    let skill = PromptOnlySkill::new(manifest.clone(), "prompt".to_string());
+    assert_eq!(skill.manifest().id.as_str(), "test-prompt-skill");
+    assert_eq!(skill.manifest().name, "Test Prompt Skill");
+}

crates/zclaw-skills/tests/skill_types_tests.rs

@@ -0,0 +1,148 @@
+//! Tests for zclaw-skills types: SkillManifest, SkillMode, SkillResult, SkillContext
+
+use serde_json;
+use zclaw_skills::*;
+use zclaw_types::SkillId;
+
+// === SkillMode ===
+
+#[test]
+fn skill_mode_serialization_roundtrip() {
+    let modes = vec![
+        SkillMode::PromptOnly,
+        SkillMode::Python,
+        SkillMode::Shell,
+        SkillMode::Wasm,
+        SkillMode::Native,
+    ];
+    for mode in modes {
+        let json = serde_json::to_string(&mode).unwrap();
+        let parsed: SkillMode = serde_json::from_str(&json).unwrap();
+        assert_eq!(mode, parsed);
+    }
+}
+
+#[test]
+fn skill_mode_snake_case_serialization() {
+    let json = serde_json::to_string(&SkillMode::PromptOnly).unwrap();
+    assert!(json.contains("prompt_only"));
+}
+
+// === SkillResult ===
+
+#[test]
+fn skill_result_success() {
+    let result = SkillResult::success(serde_json::json!({"answer": 42}));
+    assert!(result.success);
+    assert!(result.error.is_none());
+    assert_eq!(result.output["answer"], 42);
+}
+
+#[test]
+fn skill_result_error() {
+    let result = SkillResult::error("execution failed");
+    assert!(!result.success);
+    assert_eq!(result.error.unwrap(), "execution failed");
+    assert!(result.output.is_null());
+}
+
+#[test]
+fn skill_result_roundtrip() {
+    let result = SkillResult {
+        success: true,
+        output: serde_json::json!("hello"),
+        error: None,
+        duration_ms: Some(150),
+        tokens_used: Some(42),
+    };
+    let json = serde_json::to_string(&result).unwrap();
+    let parsed: SkillResult = serde_json::from_str(&json).unwrap();
+    assert!(parsed.success);
+    assert_eq!(parsed.duration_ms.unwrap(), 150);
+    assert_eq!(parsed.tokens_used.unwrap(), 42);
+}
+
+// === SkillManifest ===
+
+#[test]
+fn skill_manifest_full_roundtrip() {
+    let manifest = SkillManifest {
+        id: SkillId::new("test-skill"),
+        name: "Test Skill".to_string(),
+        description: "A test skill".to_string(),
+        version: "2.0.0".to_string(),
+        author: Some("tester".to_string()),
+        mode: SkillMode::PromptOnly,
+        capabilities: vec!["llm".to_string()],
+        input_schema: Some(serde_json::json!({"type": "object"})),
+        output_schema: None,
+        tags: vec!["test".to_string()],
+        category: Some("coding".to_string()),
+        triggers: vec!["test trigger".to_string()],
+        tools: vec!["bash".to_string()],
+        enabled: true,
+    };
+    let json = serde_json::to_string(&manifest).unwrap();
+    let parsed: SkillManifest = serde_json::from_str(&json).unwrap();
+    assert_eq!(parsed.id.as_str(), "test-skill");
+    assert_eq!(parsed.name, "Test Skill");
+    assert_eq!(parsed.mode, SkillMode::PromptOnly);
+    assert_eq!(parsed.capabilities.len(), 1);
+    assert_eq!(parsed.triggers.len(), 1);
+    assert_eq!(parsed.tools.len(), 1);
+    assert_eq!(parsed.category.unwrap(), "coding");
+    assert!(parsed.enabled);
+}
+
+#[test]
+fn skill_manifest_default_enabled() {
+    let json = r#"{"id":"x","name":"X","description":"x","version":"1.0","mode":"prompt_only"}"#;
+    let manifest: SkillManifest = serde_json::from_str(json).unwrap();
+    assert!(manifest.enabled, "enabled should default to true");
+}
+
+#[test]
+fn skill_manifest_disabled() {
+    let json = r#"{"id":"x","name":"X","description":"x","version":"1.0","mode":"prompt_only","enabled":false}"#;
+    let manifest: SkillManifest = serde_json::from_str(json).unwrap();
+    assert!(!manifest.enabled);
+}
+
+#[test]
+fn skill_manifest_all_modes_roundtrip() {
+    for mode in &[SkillMode::PromptOnly, SkillMode::Python, SkillMode::Shell, SkillMode::Wasm] {
+        let manifest = SkillManifest {
+            id: SkillId::new("m"),
+            name: "M".into(),
+            description: "d".into(),
+            version: "1.0".into(),
+            author: None,
+            mode: mode.clone(),
+            capabilities: vec![],
+            input_schema: None,
+            output_schema: None,
+            tags: vec![],
+            category: None,
+            triggers: vec![],
+            tools: vec![],
+            enabled: true,
+        };
+        let json = serde_json::to_string(&manifest).unwrap();
+        let parsed: SkillManifest = serde_json::from_str(&json).unwrap();
+        assert_eq!(*mode, parsed.mode);
+    }
+}
+
+// === SkillContext ===
+
+#[test]
+fn skill_context_default() {
+    let ctx = SkillContext::default();
+    assert!(ctx.agent_id.is_empty());
+    assert!(ctx.session_id.is_empty());
+    assert!(ctx.working_dir.is_none());
+    assert_eq!(ctx.timeout_secs, 60);
+    assert!(!ctx.network_allowed);
+    assert!(!ctx.file_access_allowed);
+    assert!(ctx.llm.is_none());
+}