更新

server/tests/PrescriptionAiUpstreamContractTest.php

@@ -186,6 +186,80 @@ expectSame([], $plan[1]['files'], 'the fallback attempt sends no attachments');
 expectSame(9, count($plan[1]['omitted']), 'the fallback attempt declares every attachment');
 expectSame(1, count(callPrivate('buildAttemptPlan', [[], []])), 'a request without attachments is attempted once');
 
+$inputPlan = callPrivate('buildInputAttemptPlan', [['prompt_version' => 'v2']]);
+expectSame(2, count($inputPlan), 'structured Dify inputs get one compatibility fallback');
+expectSame([], $inputPlan[1], 'the compatibility fallback uses an empty inputs object');
+expectSame([[]], callPrivate('buildInputAttemptPlan', [[]]), 'empty inputs are not retried twice');
+
+$difyInputSpec = ['protocol' => 'dify'];
+$openAiInputSpec = ['protocol' => 'openai'];
+expectSame(
+    true,
+    callPrivate('isInputRejection', [
+        ['errno' => 0, 'http_code' => 400, 'body' => '{"code":"invalid_param"}'],
+        $difyInputSpec,
+        ['prompt_version' => 'v2'],
+    ]),
+    'Dify invalid_param retries with query-only input'
+);
+expectSame(
+    false,
+    callPrivate('isInputRejection', [
+        ['errno' => 0, 'http_code' => 400, 'body' => '{"code":"invalid_param"}'],
+        $difyInputSpec,
+        [],
+    ]),
+    'an already empty inputs object is never retried'
+);
+expectSame(
+    false,
+    callPrivate('isInputRejection', [
+        ['errno' => 0, 'http_code' => 400, 'body' => '{"code":"invalid_param"}'],
+        $openAiInputSpec,
+        ['prompt_version' => 'v2'],
+    ]),
+    'OpenAI protocol does not use the Dify input fallback'
+);
+expectSame(
+    false,
+    callPrivate('isInputRejection', [
+        ['errno' => 0, 'http_code' => 400, 'body' => '{"code":"provider_quota_exceeded"}'],
+        $difyInputSpec,
+        ['prompt_version' => 'v2'],
+    ]),
+    'quota and provider failures are not submitted twice'
+);
+expectSame(
+    true,
+    callPrivate('isInputRejection', [
+        [
+            'errno' => 0,
+            'http_code' => 200,
+            'upstream_error' => true,
+            'upstream_code' => 'invalid_param',
+            'emitted' => false,
+        ],
+        $difyInputSpec,
+        ['prompt_version' => 'v2'],
+    ]),
+    'a streaming invalid_param before any delta also retries without inputs'
+);
+expectSame(
+    false,
+    callPrivate('isInputRejection', [
+        [
+            'errno' => 0,
+            'http_code' => 200,
+            'upstream_error' => true,
+            'upstream_code' => 'invalid_param',
+            'emitted' => true,
+        ],
+        $difyInputSpec,
+        ['prompt_version' => 'v2'],
+    ]),
+    'a stream that already emitted content is never replayed'
+);
+
 expectSame(true, callPrivate('shouldRetryWithoutFiles', [400, $capped['kept']]), 'invalid_param retries without attachments');
 expectSame(true, callPrivate('shouldRetryWithoutFiles', [413, $capped['kept']]), 'oversized attachments retry without attachments');
 expectSame(false, callPrivate('shouldRetryWithoutFiles', [400, []]), 'a text-only rejection is not retried');