Add janus processing unit tests

tests/models/janus/test_processor_janus.js

@@ -0,0 +1,47 @@
+import { AutoProcessor, VLChatProcessor } from "../../../src/transformers.js";
+
+import { MAX_PROCESSOR_LOAD_TIME, MAX_TEST_EXECUTION_TIME } from "../../init.js";
+
+export default () => {
+  describe("VLChatProcessor", () => {
+    const model_id = "onnx-community/Janus-1.3B-ONNX";
+
+    /** @type {VLChatProcessor} */
+    let processor;
+    beforeAll(async () => {
+      processor = await AutoProcessor.from_pretrained(model_id);
+    }, MAX_PROCESSOR_LOAD_TIME);
+
+    it(
+      "Image and text",
+      async () => {
+        // Prepare inputs
+        const conversation = [
+          {
+            role: "User",
+            content: "<image_placeholder>\nConvert the formula into latex code.",
+            images: ["https://huggingface.co/datasets/Xenova/transformers.js-docs/resolve/main/quadratic_formula.png"],
+          },
+        ];
+
+        const { input_ids, attention_mask, images_seq_mask, images_emb_mask, pixel_values, original_sizes, reshaped_input_sizes } = await processor(conversation);
+        const num_tokens = 631;
+        const { num_image_tokens } = processor.config; // 576
+        const { image_size } = processor.image_processor.config; // 384
+
+        expect(input_ids.dims).toEqual([1, num_tokens]);
+        expect(attention_mask.dims).toEqual([1, num_tokens]);
+        expect(images_seq_mask.dims).toEqual([1, num_tokens]);
+        expect(images_seq_mask.to("float32").mean().item()).toBeCloseTo(num_image_tokens / num_tokens, 6);
+        expect(images_emb_mask.dims).toEqual([1, 1, num_image_tokens]);
+        expect(images_emb_mask.to("float32").mean().item()).toBeCloseTo(1);
+        expect(pixel_values.dims).toEqual([1, 1, 3, image_size, image_size]);
+        expect(pixel_values.mean().item()).toBeCloseTo(0.5999642610549927, 6);
+
+        expect(original_sizes).toEqual([[206, 767]]);
+        expect(reshaped_input_sizes).toEqual([[103, image_size]]);
+      },
+      MAX_TEST_EXECUTION_TIME,
+    );
+  });
+};