Add pytest, node, github action

Author: sittingthyme

.github/workflows/tests.yml

@@ -3,7 +3,7 @@
   "version": "1.0.0",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "node --test"
   },
   "keywords": [],
   "author": "",

schemaTest/package-lock.json package-lock.jsonschemaTest/package-lock.json renamed to package-lock.json

@@ -0,0 +1,78 @@
+import json
+from builder import layout, visualization, encoding
+
+
+def build_test1_spec():
+    test1 = (
+        visualization()
+        .mark("bar")
+        .add_encoding(
+            encoding()
+            .channel("x").field("x")
+            .channel("y").field("y")
+            .channel("color").field("grey")
+        )
+    )
+
+    test1 = test1.visualization
+    test1["encoding"] = test1["encoding"].encoding
+
+    return test1
+
+def build_test2_spec():
+    
+    test2 = layout().direction("vertical").gap("5px").add_child(
+            visualization()
+            .mark("line")
+            .add_encoding(
+                encoding()
+                .channel("x").field("x")
+                .channel("y").field("y")
+                .channel("color").field("blue")
+            )
+        ).add_child(
+            layout().direction("horizontal").gap("5px")
+            .add_child(
+                visualization()
+                .mark("point")
+                .add_encoding(
+                    encoding()
+                    .channel("x").field("x")
+                    .channel("y").field("y")
+                    .channel("color").field("green")
+                )
+            ).add_child(
+                visualization()
+                .mark("area")
+                .add_encoding(
+                    encoding()
+                    .channel("x").field("x")
+                    .channel("y").field("y")
+                    .channel("color").field("purple")
+                )
+            )
+        )
+    test2 = test2.layout
+    test2["children"][0] = test2["children"][0].visualization
+    test2["children"][0]["encoding"] = test2["children"][0]["encoding"].encoding
+    test2["children"][1] = test2["children"][1].layout
+    test2["children"][1]["children"][0] = test2["children"][1]["children"][0].visualization
+    test2["children"][1]["children"][0]["encoding"] = test2["children"][1]["children"][0]["encoding"].encoding
+    test2["children"][1]["children"][1] = test2["children"][1]["children"][1].visualization
+    test2["children"][1]["children"][1]["encoding"] = test2["children"][1]["children"][1]["encoding"].encoding
+
+    return test2
+
+def test_example1_matches_json():
+    test1 = build_test1_spec()
+    with open("schemaExamples/example1.json", "r") as f:
+        example1 = json.load(f)
+    assert test1 == example1
+
+
+def test_example2_matches_json():
+    test2 = build_test2_spec()
+    with open("schemaExamples/example2.json", "r") as f:
+        example2 = json.load(f)
+    assert test2 == example2
+

schemaTest/package.json package.jsonschemaTest/package.json renamed to package.json

@@ -0,0 +1,38 @@
+const test = require('node:test');
+const assert = require('assert');
+const fs = require('fs');
+const Ajv = require('ajv');
+
+const ajv = new Ajv({ allErrors: true });
+
+const schema = JSON.parse(
+  fs.readFileSync('schema/visualization.schema.json', 'utf8')
+);
+
+const example1 = JSON.parse(
+  fs.readFileSync('schemaExamples/example1.json', 'utf8')
+);
+
+const example2 = JSON.parse(
+  fs.readFileSync('schemaExamples/example2.json', 'utf8')
+);
+
+test('example1 is valid', () => {
+  const validate = ajv.compile(schema);
+  const valid = validate(example1);
+  assert.ok(
+    valid,
+    'example1.json should be valid. Errors:\n' +
+      JSON.stringify(validate.errors, null, 2)
+  );
+});
+
+test('example2 is valid', () => {
+  const validate = ajv.compile(schema);
+  const valid = validate(example2);
+  assert.ok(
+    valid,
+    'example2.json should be valid. Errors:\n' +
+      JSON.stringify(validate.errors, null, 2)
+  );
+});