refactor(all): add test file

data/reports/contour/contour_style1.json

+[
+  {
+    "x": [
+      -9,
+      -6,
+      -5,
+      -3,
+      -1
+    ],
+    "y": [
+      0,
+      1,
+      4,
+      5,
+      7
+    ]
+  }
+]
\ No newline at end of file