fix: Update mocks to use specific date strings

Author: camdecoster

test/image/mocks/axes_breaks.json

@@ -74,35 +74,35 @@
     "shapes": [
       {
         "type": "rect",
-        "y0": 11,
-        "y1": 89,
+        "y0": "1970-01-01 00:00:00.011",
+        "y1": "1970-01-01 00:00:00.089",
         "yref": "y2",
         "x0": 0.56,
         "x1": 1,
         "xref": "paper"
       },
       {
         "type": "rect",
-        "y0": 101,
-        "y1": 189,
+        "y0": "1970-01-01 00:00:00.101",
+        "y1": "1970-01-01 00:00:00.189",
         "yref": "y2",
         "x0": 0.56,
         "x1": 1,
         "xref": "paper"
       },
       {
         "type": "rect",
-        "x0": 11,
-        "x1": 89,
+        "x0": "1970-01-01 00:00:00.011",
+        "x1": "1970-01-01 00:00:00.089",
         "xref": "x4",
         "y0": 0,
         "y1": 0.5,
         "yref": "paper"
       },
       {
         "type": "rect",
-        "x0": 101,
-        "x1": 189,
+        "x0": "1970-01-01 00:00:00.101",
+        "x1": "1970-01-01 00:00:00.189",
         "xref": "x4",
         "y0": 0,
         "y1": 0.5,

test/image/mocks/domain_ref_axis_types.json

@@ -16,7 +16,7 @@
     },
     {
       "type": "bar",
-      "x": [0, 86400000, 172800000, 259200000],
+      "x": ["1970-01-01", "1970-01-02", "1970-01-03", "1970-01-04"],
       "xaxis": "x3",
       "y": [3, 1, 6, 10],
       "yaxis": "y3"
@@ -56,7 +56,7 @@
       "type": "bar",
       "x": [3, 1, 6, 10],
       "xaxis": "x8",
-      "y": [0, 86400000, 172800000, 259200000],
+      "y": ["1970-01-01", "1970-01-02", "1970-01-03", "1970-01-04"],
       "yaxis": "y8"
     },
     {
@@ -237,17 +237,17 @@
       },
       {
         "type": "line",
-        "x0": 172800000,
-        "x1": 172800000,
+        "x0": "1970-01-03",
+        "x1": "1970-01-03",
         "xref": "x3",
         "y0": 0,
         "y1": 1,
         "yref": "y3 domain"
       },
       {
         "type": "line",
-        "x0": 259200000,
-        "x1": 259200000,
+        "x0": "1970-01-04",
+        "x1": "1970-01-04",
         "xref": "x3",
         "y0": 0,
         "y1": 1,
@@ -264,8 +264,8 @@
       },
       {
         "type": "rect",
-        "x0": 0,
-        "x1": 86400000,
+        "x0": "1970-01-01",
+        "x1": "1970-01-02",
         "xref": "x3",
         "y0": 0,
         "y1": 1,
@@ -465,17 +465,17 @@
         "x0": 0,
         "x1": 1,
         "xref": "x8 domain",
-        "y0": 172800000,
-        "y1": 172800000,
+        "y0": "1970-01-03",
+        "y1": "1970-01-03",
         "yref": "y8"
       },
       {
         "type": "line",
         "x0": 0,
         "x1": 1,
         "xref": "x8 domain",
-        "y0": 259200000,
-        "y1": 259200000,
+        "y0": "1970-01-04",
+        "y1": "1970-01-04",
         "yref": "y8"
       },
       {
@@ -492,8 +492,8 @@
         "x0": 0,
         "x1": 1,
         "xref": "x8 domain",
-        "y0": 0,
-        "y1": 86400000,
+        "y0": "1970-01-01",
+        "y1": "1970-01-02",
         "yref": "y8"
       },
       {