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| | 1 | package amp |
| | 2 | |
| | 3 | import ( |
| | 4 | "testing" |
| | 5 | ) |
| | 6 | |
| | 7 | func TestRewriteModelInResponse_TopLevel(t *testing.T) { |
| | 8 | rw := &ResponseRewriter{originalModel: "gpt-5.2-codex"} |
| | 9 | |
| | 10 | input := []byte(`{"id":"resp_1","model":"gpt-5.3-codex","output":[]}`) |
| | 11 | result := rw.rewriteModelInResponse(input) |
| | 12 | |
| | 13 | expected := `{"id":"resp_1","model":"gpt-5.2-codex","output":[]}` |
| | 14 | if string(result) != expected { |
| | 15 | t.Errorf("expected %s, got %s", expected, string(result)) |
| | 16 | } |
| | 17 | } |
| | 18 | |
| | 19 | func TestRewriteModelInResponse_ResponseModel(t *testing.T) { |
| | 20 | rw := &ResponseRewriter{originalModel: "gpt-5.2-codex"} |
| | 21 | |
| | 22 | input := []byte(`{"type":"response.completed","response":{"id":"resp_1","model":"gpt-5.3-codex","status":"completed"}}`) |
| | 23 | result := rw.rewriteModelInResponse(input) |
| | 24 | |
| | 25 | expected := `{"type":"response.completed","response":{"id":"resp_1","model":"gpt-5.2-codex","status":"completed"}}` |
| | 26 | if string(result) != expected { |
| | 27 | t.Errorf("expected %s, got %s", expected, string(result)) |
| | 28 | } |
| | 29 | } |
| | 30 | |
| | 31 | func TestRewriteModelInResponse_ResponseCreated(t *testing.T) { |
| | 32 | rw := &ResponseRewriter{originalModel: "gpt-5.2-codex"} |
| | 33 | |
| | 34 | input := []byte(`{"type":"response.created","response":{"id":"resp_1","model":"gpt-5.3-codex","status":"in_progress"}}`) |
| | 35 | result := rw.rewriteModelInResponse(input) |
| | 36 | |
| | 37 | expected := `{"type":"response.created","response":{"id":"resp_1","model":"gpt-5.2-codex","status":"in_progress"}}` |
| | 38 | if string(result) != expected { |
| | 39 | t.Errorf("expected %s, got %s", expected, string(result)) |
| | 40 | } |
| | 41 | } |
| | 42 | |
| | 43 | func TestRewriteModelInResponse_NoModelField(t *testing.T) { |
| | 44 | rw := &ResponseRewriter{originalModel: "gpt-5.2-codex"} |
| | 45 | |
| | 46 | input := []byte(`{"type":"response.output_item.added","item":{"id":"item_1","type":"message"}}`) |
| | 47 | result := rw.rewriteModelInResponse(input) |
| | 48 | |
| | 49 | if string(result) != string(input) { |
| | 50 | t.Errorf("expected no modification, got %s", string(result)) |
| | 51 | } |
| | 52 | } |
| | 53 | |
| | 54 | func TestRewriteModelInResponse_EmptyOriginalModel(t *testing.T) { |
| | 55 | rw := &ResponseRewriter{originalModel: ""} |
| | 56 | |
| | 57 | input := []byte(`{"model":"gpt-5.3-codex"}`) |
| | 58 | result := rw.rewriteModelInResponse(input) |
| | 59 | |
| | 60 | if string(result) != string(input) { |
| | 61 | t.Errorf("expected no modification when originalModel is empty, got %s", string(result)) |
| | 62 | } |
| | 63 | } |
| | 64 | |
| | 65 | func TestRewriteStreamChunk_SSEWithResponseModel(t *testing.T) { |
| | 66 | rw := &ResponseRewriter{originalModel: "gpt-5.2-codex"} |
| | 67 | |
| | 68 | chunk := []byte("data: {\"type\":\"response.completed\",\"response\":{\"id\":\"resp_1\",\"model\":\"gpt-5.3-codex\",\"status\":\"completed\"}}\n\n") |
| | 69 | result := rw.rewriteStreamChunk(chunk) |
| | 70 | |
| | 71 | expected := "data: {\"type\":\"response.completed\",\"response\":{\"id\":\"resp_1\",\"model\":\"gpt-5.2-codex\",\"status\":\"completed\"}}\n\n" |
| | 72 | if string(result) != expected { |
| | 73 | t.Errorf("expected %s, got %s", expected, string(result)) |
| | 74 | } |
| | 75 | } |
| | 76 | |
| | 77 | func TestRewriteStreamChunk_MultipleEvents(t *testing.T) { |
| | 78 | rw := &ResponseRewriter{originalModel: "gpt-5.2-codex"} |
| | 79 | |
| | 80 | chunk := []byte("data: {\"type\":\"response.created\",\"response\":{\"model\":\"gpt-5.3-codex\"}}\n\ndata: {\"type\":\"response.output_item.added\",\"item\":{\"id\":\"item_1\"}}\n\n") |
| | 81 | result := rw.rewriteStreamChunk(chunk) |
| | 82 | |
| | 83 | if string(result) == string(chunk) { |
| | 84 | t.Error("expected response.model to be rewritten in SSE stream") |
| | 85 | } |
| | 86 | if !contains(result, []byte(`"model":"gpt-5.2-codex"`)) { |
| | 87 | t.Errorf("expected rewritten model in output, got %s", string(result)) |
| | 88 | } |
| | 89 | } |
| | 90 | |
| | 91 | func TestRewriteStreamChunk_MessageModel(t *testing.T) { |
| | 92 | rw := &ResponseRewriter{originalModel: "claude-opus-4.5"} |
| | 93 | |
| | 94 | chunk := []byte("data: {\"message\":{\"model\":\"claude-sonnet-4\",\"role\":\"assistant\"}}\n\n") |
| | 95 | result := rw.rewriteStreamChunk(chunk) |
| | 96 | |
| | 97 | expected := "data: {\"message\":{\"model\":\"claude-opus-4.5\",\"role\":\"assistant\"}}\n\n" |
| | 98 | if string(result) != expected { |
| | 99 | t.Errorf("expected %s, got %s", expected, string(result)) |
| | 100 | } |
| | 101 | } |
| | 102 | |
| | 103 | func contains(data, substr []byte) bool { |
| | 104 | for i := 0; i <= len(data)-len(substr); i++ { |
| | 105 | if string(data[i:i+len(substr)]) == string(substr) { |
| | 106 | return true |
| | 107 | } |
| | 108 | } |
| | 109 | return false |
| | 110 | } |