fix(gemini,anthropic): base64 validation, escaped model paths, prompt-block mapping, unified unsupported-param semantics

testdata/gemini/chat_images_nonbase64_in.json

@@ -0,0 +1,11 @@
+{
+  "model": "gemini-2.5-pro",
+  "messages": [
+    {
+      "role": "user",
+      "content": [
+        {"type": "image_url", "image_url": {"url": "data:text/plain,Hello"}}
+      ]
+    }
+  ]
+}

testdata/gemini/chat_images_nonbase64_wanterr.json

@@ -0,0 +1 @@
+{"errContains": "must be base64-encoded", "notSupported": false}

testdata/gemini/chat_logit_bias_empty_in.json

@@ -0,0 +1,5 @@
+{
+  "model": "gemini-2.5-pro",
+  "messages": [{"role": "user", "content": "hi"}],
+  "logit_bias": {}
+}

testdata/gemini/chat_logit_bias_empty_want.json

@@ -0,0 +1,5 @@
+{
+  "contents": [
+    {"role": "user", "parts": [{"text": "hi"}]}
+  ]
+}

testdata/gemini/chat_logprobs_false_in.json

@@ -0,0 +1,5 @@
+{
+  "model": "gemini-2.5-pro",
+  "messages": [{"role": "user", "content": "hi"}],
+  "logprobs": false
+}

testdata/gemini/chat_logprobs_false_want.json

@@ -0,0 +1,5 @@
+{
+  "contents": [
+    {"role": "user", "parts": [{"text": "hi"}]}
+  ]
+}

testdata/gemini/chat_logprobs_truthy_in.json

@@ -0,0 +1,5 @@
+{
+  "model": "gemini-2.5-pro",
+  "messages": [{"role": "user", "content": "hi"}],
+  "logprobs": true
+}

testdata/gemini/chat_logprobs_truthy_wanterr.json

@@ -0,0 +1 @@
+{"errContains": "logprobs is not supported for gemini models", "notSupported": false}

testdata/gemini/resp_no_id_in.json

@@ -0,0 +1,9 @@
+{
+  "candidates": [
+    {
+      "content": {"role": "model", "parts": [{"text": "ok"}]},
+      "finishReason": "STOP"
+    }
+  ],
+  "usageMetadata": {"promptTokenCount": 2, "candidatesTokenCount": 1}
+}

testdata/gemini/resp_no_id_want.json

@@ -0,0 +1,14 @@
+{
+  "id": "chatcmpl-gemini-1734000000",
+  "object": "chat.completion",
+  "created": 1734000000,
+  "model": "gw-gemini-model",
+  "choices": [
+    {
+      "index": 0,
+      "message": {"role": "assistant", "content": "ok"},
+      "finish_reason": "stop"
+    }
+  ],
+  "usage": {"prompt_tokens": 2, "completion_tokens": 1, "total_tokens": 3}
+}

testdata/gemini/resp_prompt_blocked_in.json

@@ -0,0 +1,5 @@
+{
+  "promptFeedback": {"blockReason": "SAFETY"},
+  "usageMetadata": {"promptTokenCount": 15, "candidatesTokenCount": 0},
+  "responseId": "resp_BLOCKED1"
+}

testdata/gemini/resp_prompt_blocked_want.json

@@ -0,0 +1,14 @@
+{
+  "id": "chatcmpl-resp_BLOCKED1",
+  "object": "chat.completion",
+  "created": 1734000000,
+  "model": "gw-gemini-model",
+  "choices": [
+    {
+      "index": 0,
+      "message": {"role": "assistant", "content": null},
+      "finish_reason": "content_filter"
+    }
+  ],
+  "usage": {"prompt_tokens": 15, "completion_tokens": 0, "total_tokens": 15}
+}

testdata/gemini/stream_prompt_blocked.sse

@@ -0,0 +1,2 @@
+data: {"promptFeedback":{"blockReason":"SAFETY"},"usageMetadata":{"promptTokenCount":9,"candidatesTokenCount":0},"responseId":"resp_BLOCKSTREAM"}
+

testdata/gemini/stream_prompt_blocked_usage.json

@@ -0,0 +1 @@
+{"prompt": 9, "completion": 0}

testdata/gemini/stream_prompt_blocked_want.json

@@ -0,0 +1,4 @@
+[
+  {"id":"chatcmpl-resp_BLOCKSTREAM","object":"chat.completion.chunk","created":1734000000,"model":"gw-gemini-model","choices":[{"index":0,"delta":{"role":"assistant"},"finish_reason":null}]},
+  {"id":"chatcmpl-resp_BLOCKSTREAM","object":"chat.completion.chunk","created":1734000000,"model":"gw-gemini-model","choices":[{"index":0,"delta":{},"finish_reason":"content_filter"}]}
+]