refactor(test): move tools, evals, datasetio, scoring and post training tests (#1401)

All of the tests from `llama_stack/providers/tests/` are now moved to
`tests/integration`.

I converted the `tools`, `scoring` and `datasetio` tests to use API.
However, `eval` and `post_training` proved to be a bit challenging to
leaving those. I think `post_training` should be relatively
straightforward also.

As part of this, I noticed that `wolfram_alpha` tool wasn't added to
some of our commonly used distros so I added it. I am going to remove a
lot of code duplication from distros next so while this looks like a
one-off right now, it will go away and be there uniformly for all
distros.

tests/integration/tool_runtime/test_builtin_tools.py

@@ -0,0 +1,66 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the terms described in the LICENSE file in
+# the root directory of this source tree.
+
+import json
+import os
+
+import pytest
+
+
+@pytest.fixture
+def sample_search_query():
+    return "What are the latest developments in quantum computing?"
+
+
+@pytest.fixture
+def sample_wolfram_alpha_query():
+    return "What is the square root of 16?"
+
+
+def test_web_search_tool(llama_stack_client, sample_search_query):
+    """Test the web search tool functionality."""
+    if "TAVILY_SEARCH_API_KEY" not in os.environ:
+        pytest.skip("TAVILY_SEARCH_API_KEY not set, skipping test")
+
+    response = llama_stack_client.tool_runtime.invoke_tool(
+        tool_name="web_search", kwargs={"query": sample_search_query}
+    )
+
+    # Verify the response
+    assert response.content is not None
+    assert len(response.content) > 0
+    assert isinstance(response.content, str)
+
+    content = json.loads(response.content)
+    assert "query" in content
+    assert "top_k" in content
+    assert len(content["top_k"]) > 0
+
+    first = content["top_k"][0]
+    assert "title" in first
+    assert "url" in first
+
+
+def test_wolfram_alpha_tool(llama_stack_client, sample_wolfram_alpha_query):
+    """Test the wolfram alpha tool functionality."""
+    if "WOLFRAM_ALPHA_API_KEY" not in os.environ:
+        pytest.skip("WOLFRAM_ALPHA_API_KEY not set, skipping test")
+
+    response = llama_stack_client.tool_runtime.invoke_tool(
+        tool_name="wolfram_alpha", kwargs={"query": sample_wolfram_alpha_query}
+    )
+
+    print(response.content)
+    assert response.content is not None
+    assert len(response.content) > 0
+    assert isinstance(response.content, str)
+
+    content = json.loads(response.content)
+    result = content["queryresult"]
+    assert "success" in result
+    assert result["success"]
+    assert "pods" in result
+    assert len(result["pods"]) > 0