diff --git a/test/calculateAction.02_FetchDifferentCSV.test.js b/test/calculateAction.02_FetchDifferentCSV.test.js
index 120907f..b295918 100755
--- a/test/calculateAction.02_FetchDifferentCSV.test.js
+++ b/test/calculateAction.02_FetchDifferentCSV.test.js
@@ -89,7 +89,8 @@ describe("calculate() Snapshot Tests", () => {
 
         var valueDeg = result.features["forearm.angleZ"].valueDeg
 
-        //expect(valueDeg).toBeCloseTo(0, 10); // Erwartet ca. -137.28° mit 1 Dezimalstelle Genauigkeit
+        // expect(valueDeg).toBeCloseTo(7.4595, 1); // Erwartet ca. -137.28° mit 1 Dezimalstelle Genauigkeit
+
         //expect(logValue).toMatch(/Starte Berechnung/);
         //expect(logValue).toMatch(/CSV-Daten geladen/);
     });
diff --git a/test/calculateAction.03_EasyCSV.test.js b/test/calculateAction.03_EasyCSV.test.js
new file mode 100644
index 0000000..64fa65e
--- /dev/null
+++ b/test/calculateAction.03_EasyCSV.test.js
@@ -0,0 +1,53 @@
+/**
+ * @jest-environment jsdom
+ */
+
+const fs = require("fs");
+const path = require("path");
+
+describe("calculate() Snapshot Tests", () => {
+
+    let calculate;
+    let snapshotFile;
+
+    beforeEach(() => {
+
+        // Standard: irgendeine Datei setzen, falls Test nichts setzt
+        snapshotFile = "snapshot_default.csv";
+
+        // DOM erzeugen
+        document.body.innerHTML = `
+            <textarea id="analysis-log"></textarea>
+        `;
+
+        // Fetch dynamisch mocken
+        global.fetch = jest.fn(async () => {
+
+            const csvPath = path.join(__dirname, "snapshots", snapshotFile);
+            const csvContent = fs.readFileSync(csvPath, "utf8");
+
+            return {
+                ok: true,
+                headers: { get: () => "text/csv" },
+                text: async () => csvContent
+            };
+        });
+
+        // Modul erst JETZT laden (DOM existiert)
+        ({ calculate } = require("../public/calculateActions.js"));
+    });
+
+    // ✅ Beispiel 1: Die Datei aus deiner Frage
+    test("Snapshot 1775406055428 wird korrekt geladen", async () => {
+
+        snapshotFile = "snapshot_video0_1775406055428_two_cam.csv";
+
+        var result = await calculate();
+
+        expect(global.fetch).toHaveBeenCalledWith("/api/latest-snapshot");
+
+        //console.log("Berechnungsergebnis:", result.features["forearm.angleZ"].valueDeg);
+        const r = result.features["forearm.angleZ"].valueDeg
+        expect(r).toBeCloseTo(131.3436, 1);
+    });
+});
\ No newline at end of file
diff --git a/test/snapshots/snapshot_video0_1775406055428.jpg b/test/snapshots/snapshot_video0_1775406055428.jpg
new file mode 100644
index 0000000..1d070bc
Binary files /dev/null and b/test/snapshots/snapshot_video0_1775406055428.jpg differ
diff --git a/test/snapshots/snapshot_video0_1775406055428_two_cam.csv b/test/snapshots/snapshot_video0_1775406055428_two_cam.csv
new file mode 100644
index 0000000..4cf4328
--- /dev/null
+++ b/test/snapshots/snapshot_video0_1775406055428_two_cam.csv
@@ -0,0 +1,20 @@
+id,x_mm,y_mm,z_mm,roll_deg,pitch_deg,yaw_deg,seen_by
+camera 0,20.57,-610.52,589.07,-122.982,0.983,-21.216
+camera 1,285.64,-323.91,1175.28,-163.532,-2.871,-2.320
+197,294.33,-107.10,42.66,24.178,87.583,-153.262,1
+198,322.36,-51.62,105.51,-4.006,2.569,0.264,3
+200,253.83,-32.23,119.85,1.613,0.280,1.853,3
+201,229.66,88.35,77.42,54.528,62.860,30.165,1
+204,255.24,119.60,126.69,0.415,2.861,0.328,3
+205,853.43,-61.26,-149.90,20.853,-37.717,-9.272,2
+207,847.45,33.87,-129.33,1.040,-7.604,-2.451,2
+208,506.94,-73.83,-90.70,22.575,-11.879,-0.931,2
+210,-2.98,-0.29,-1.22,-1.583,0.163,0.432,3
+211,199.83,-0.12,-0.03,0.528,1.427,-0.276,3
+215,199.72,-90.28,-0.47,-0.349,-0.487,-0.415,3
+217,593.42,4.85,-8.36,115.523,-38.198,-61.266,3
+218,392.41,-89.81,171.69,-56.876,7.958,168.535,3
+219,397.44,-21.62,249.19,-58.657,26.538,137.623,3
+222,411.95,-166.81,94.12,-51.900,-3.795,-176.339,3
+229,324.14,-141.95,110.20,-4.029,2.223,0.193,3
+243,341.92,-141.96,39.90,89.294,1.545,1.379,1
diff --git a/test/snapshots/snapshot_video0_1775406055428_two_cam.json b/test/snapshots/snapshot_video0_1775406055428_two_cam.json
new file mode 100644
index 0000000..e3f6398
--- /dev/null
+++ b/test/snapshots/snapshot_video0_1775406055428_two_cam.json
@@ -0,0 +1,266 @@
+{
+    "metadata": {
+        "timestamp": "2026-04-05 16:20:55",
+        "reference_markers": [
+            210,
+            211,
+            215
+        ],
+        "dict": "DICT_4X4_250",
+        "marker_size_mm": 25.0,
+        "rms_refs_px_cam1": 3.254055063488035,
+        "rms_refs_px_cam2": 2.329978520523634,
+        "description": "Two-camera joint optimization with triangulation"
+    },
+    "cameras": [
+        {
+            "id": "camera1",
+            "position_mm": [
+                20.567992853963712,
+                -610.5178800181857,
+                589.0698645481658
+            ],
+            "orientation_deg": {
+                "roll": -122.98164282878035,
+                "pitch": 0.9825995865612873,
+                "yaw": -21.215599879804127
+            }
+        },
+        {
+            "id": "camera2",
+            "position_mm": [
+                285.63593460306214,
+                -323.91360133208565,
+                1175.2847066246202
+            ],
+            "orientation_deg": {
+                "roll": -163.5318691962207,
+                "pitch": -2.8712676709036873,
+                "yaw": -2.319894538293139
+            }
+        }
+    ],
+    "markers": [
+        {
+            "id": 197,
+            "position_mm": [
+                294.33174809359764,
+                -107.09776686381556,
+                42.657521092593576
+            ],
+            "orientation_deg": {
+                "roll": 24.177685786502696,
+                "pitch": 87.58261710989703,
+                "yaw": -153.26161785260203
+            }
+        },
+        {
+            "id": 198,
+            "position_mm": [
+                322.35528564453125,
+                -51.62440872192383,
+                105.50933074951172
+            ],
+            "orientation_deg": {
+                "roll": -4.0056133311584,
+                "pitch": 2.5694651141051086,
+                "yaw": 0.2642697205016838
+            }
+        },
+        {
+            "id": 200,
+            "position_mm": [
+                253.8253936767578,
+                -32.23002624511719,
+                119.85144805908203
+            ],
+            "orientation_deg": {
+                "roll": 1.6127513507983577,
+                "pitch": 0.28021370340515495,
+                "yaw": 1.8527495496984367
+            }
+        },
+        {
+            "id": 201,
+            "position_mm": [
+                229.66471968685903,
+                88.34733189894173,
+                77.41605123374995
+            ],
+            "orientation_deg": {
+                "roll": 54.52810378585272,
+                "pitch": 62.8599359935973,
+                "yaw": 30.165344197733074
+            }
+        },
+        {
+            "id": 204,
+            "position_mm": [
+                255.2445831298828,
+                119.60195922851562,
+                126.68728637695312
+            ],
+            "orientation_deg": {
+                "roll": 0.4145305769690522,
+                "pitch": 2.860736864204838,
+                "yaw": 0.32845819664980447
+            }
+        },
+        {
+            "id": 205,
+            "position_mm": [
+                853.431005136878,
+                -61.25721442245891,
+                -149.89679670473998
+            ],
+            "orientation_deg": {
+                "roll": 20.852865291435734,
+                "pitch": -37.71692833356208,
+                "yaw": -9.272061737418596
+            }
+        },
+        {
+            "id": 207,
+            "position_mm": [
+                847.4521233610369,
+                33.873936675138275,
+                -129.32930925154884
+            ],
+            "orientation_deg": {
+                "roll": 1.0401371636363885,
+                "pitch": -7.6044864818447975,
+                "yaw": -2.450876228459906
+            }
+        },
+        {
+            "id": 208,
+            "position_mm": [
+                506.93763250636556,
+                -73.82927207192274,
+                -90.70161319207948
+            ],
+            "orientation_deg": {
+                "roll": 22.574697007159163,
+                "pitch": -11.878815029635385,
+                "yaw": -0.930861116435157
+            }
+        },
+        {
+            "id": 210,
+            "position_mm": [
+                -2.9841384887695312,
+                -0.2894434630870819,
+                -1.2217036485671997
+            ],
+            "orientation_deg": {
+                "roll": -1.5829030552869041,
+                "pitch": 0.16287337882520173,
+                "yaw": 0.4319764191460346
+            }
+        },
+        {
+            "id": 211,
+            "position_mm": [
+                199.83383178710938,
+                -0.11946921795606613,
+                -0.029889743775129318
+            ],
+            "orientation_deg": {
+                "roll": 0.5280528898583173,
+                "pitch": 1.42715303979363,
+                "yaw": -0.2762037188762131
+            }
+        },
+        {
+            "id": 215,
+            "position_mm": [
+                199.71726989746094,
+                -90.28231048583984,
+                -0.47207993268966675
+            ],
+            "orientation_deg": {
+                "roll": -0.34887731639439074,
+                "pitch": -0.4866200044208423,
+                "yaw": -0.4154891149763061
+            }
+        },
+        {
+            "id": 217,
+            "position_mm": [
+                593.4248657226562,
+                4.84699010848999,
+                -8.357927322387695
+            ],
+            "orientation_deg": {
+                "roll": 115.52338058003483,
+                "pitch": -38.1982958889267,
+                "yaw": -61.26648945435826
+            }
+        },
+        {
+            "id": 218,
+            "position_mm": [
+                392.41168212890625,
+                -89.81021881103516,
+                171.6865997314453
+            ],
+            "orientation_deg": {
+                "roll": -56.87609794413502,
+                "pitch": 7.9576512305228695,
+                "yaw": 168.53487924220425
+            }
+        },
+        {
+            "id": 219,
+            "position_mm": [
+                397.4364013671875,
+                -21.623811721801758,
+                249.1935577392578
+            ],
+            "orientation_deg": {
+                "roll": -58.65730680858089,
+                "pitch": 26.538451116793357,
+                "yaw": 137.6231555522311
+            }
+        },
+        {
+            "id": 222,
+            "position_mm": [
+                411.9534606933594,
+                -166.8076629638672,
+                94.11588287353516
+            ],
+            "orientation_deg": {
+                "roll": -51.89961208258986,
+                "pitch": -3.794728013253899,
+                "yaw": -176.3389557230221
+            }
+        },
+        {
+            "id": 229,
+            "position_mm": [
+                324.13897705078125,
+                -141.9525909423828,
+                110.19646453857422
+            ],
+            "orientation_deg": {
+                "roll": -4.029478015347812,
+                "pitch": 2.2227848455796204,
+                "yaw": 0.19265697941371004
+            }
+        },
+        {
+            "id": 243,
+            "position_mm": [
+                341.92465540725135,
+                -141.9580916788701,
+                39.89962774242517
+            ],
+            "orientation_deg": {
+                "roll": 89.29427272560588,
+                "pitch": 1.545160298154013,
+                "yaw": 1.3793023005400504
+            }
+        }
+    ]
+}
\ No newline at end of file
diff --git a/test/snapshots/snapshot_video0_1775406055428_two_cam_annotated.jpg b/test/snapshots/snapshot_video0_1775406055428_two_cam_annotated.jpg
new file mode 100644
index 0000000..ebf02b5
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diff --git a/test/snapshots/snapshot_video0_1775406055428_two_cam_overlay.png b/test/snapshots/snapshot_video0_1775406055428_two_cam_overlay.png
new file mode 100644
index 0000000..9b7af29
Binary files /dev/null and b/test/snapshots/snapshot_video0_1775406055428_two_cam_overlay.png differ
diff --git a/test/snapshots/snapshot_video1_1775406055428.jpg b/test/snapshots/snapshot_video1_1775406055428.jpg
new file mode 100644
index 0000000..bfb9668
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diff --git a/test/snapshots/snapshot_video1_1775406055428_two_cam_annotated.jpg b/test/snapshots/snapshot_video1_1775406055428_two_cam_annotated.jpg
new file mode 100644
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Binary files /dev/null and b/test/snapshots/snapshot_video1_1775406055428_two_cam_annotated.jpg differ
diff --git a/test/snapshots/snapshot_video1_1775406055428_two_cam_overlay.png b/test/snapshots/snapshot_video1_1775406055428_two_cam_overlay.png
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