Add unified request pipeline stages

test/provider-adapter-contract.test.mjs

@@ -0,0 +1,83 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+
+const {
+    extractOpenAiToolCalls,
+    extractOpenAiStreamingToolCalls,
+    extractOpenAiTextDelta,
+    extractMistralToolCalls,
+    extractMistralTextDelta,
+    extractOllamaToolCalls,
+    extractOllamaTextDelta,
+} = await import("../dist/ai/provider-adapter-contract.js");
+
+test("openai contract extracts text delta and function calls", () => {
+    assert.equal(extractOpenAiTextDelta({type: "response.output_text.delta", delta: "hello"}), "hello");
+
+    const calls = extractOpenAiToolCalls({
+        output: [{
+            type: "function_call",
+            call_id: "call-1",
+            name: "read_file",
+            arguments: "{\"path\":\"src/index.ts\"}",
+        }],
+    });
+
+    assert.equal(calls.length, 1);
+    assert.equal(calls[0].id, "call-1");
+    assert.equal(calls[0].name, "read_file");
+
+    const streamed = extractOpenAiStreamingToolCalls({
+        type: "response.output_item.added",
+        item: {
+            type: "function_call",
+            id: "call-2",
+            name: "search_files",
+            arguments: "{\"query\":\"sendMessage\"}",
+        },
+    });
+
+    assert.equal(streamed.length, 1);
+    assert.equal(streamed[0].id, "call-2");
+    assert.equal(streamed[0].name, "search_files");
+});
+
+test("mistral contract extracts content and tool calls", () => {
+    assert.equal(extractMistralTextDelta({
+        content: [{text: "hello"}, {text: " world"}],
+    }), "hello world");
+
+    const calls = extractMistralToolCalls({
+        toolCalls: [{
+            id: "m-1",
+            function: {
+                name: "get_weather",
+                arguments: {location: "Moscow"},
+            },
+        }],
+    });
+
+    assert.equal(calls.length, 1);
+    assert.equal(calls[0].id, "m-1");
+    assert.equal(calls[0].name, "get_weather");
+});
+
+test("ollama contract extracts content and tool calls", () => {
+    assert.equal(extractOllamaTextDelta({
+        message: {content: "hello from ollama"},
+    }), "hello from ollama");
+
+    const calls = extractOllamaToolCalls({
+        tool_calls: [{
+            id: "o-1",
+            function: {
+                name: "web_search",
+                arguments: {query: "openai docs"},
+            },
+        }],
+    });
+
+    assert.equal(calls.length, 1);
+    assert.equal(calls[0].id, "o-1");
+    assert.equal(calls[0].name, "web_search");
+});