Add automated validation of animations (#45)

* Add automated validation of animations

This runs ajv js validation library using the generated schema and any
lottie animations in directories. This will help ensure the schema
definition is consistent with what we expect.

Monitored directories are-
* tests/animations/valid
* tests/animations/invalid
* docs/static/examples

Only including a few test files in initial commit, more can be added
as needed/wanted.

.github/workflows/test-animations.yml

@@ -0,0 +1,22 @@
+name: Test Animations
+on:
+    - push
+    - pull_request
+jobs:
+  schema:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v4
+      -
+        name: Setup
+        run: |
+            sudo apt update -q
+            sudo apt install -yy python3 python3-pip graphviz
+            pip install -r tools/requirements.txt
+            npm install
+      -
+        name: Validate Animations
+        run: |
+            make validate_animations

.gitignore

@@ -1,6 +1,7 @@
 docs/lottie.schema.json
 site/
 __pycache__
+node_modules
 
 # Operating system
 .DS_Store

Makefile

@@ -8,7 +8,7 @@ SOURCE_DIR = $(dir $(abspath $(lastword $(MAKEFILE_LIST))))
 OUTPUT_DIR ?= $(CURDIR)/site
 
 .SUFFIXES:
-.PHONY: all install_dependencies docs docs_serve lottie.schema.json validate validate_full
+.PHONY: all install_dependencies docs docs_serve lottie.schema.json validate validate_full validate_animations
 
 
 all: docs
@@ -38,3 +38,9 @@ validate: $(SOURCE_DIR)/docs/lottie.schema.json
 
 validate_full:$(OUTPUT_DIR)/index.html
 	$(SOURCE_DIR)/tools/schema-validate.py --html $(OUTPUT_DIR)/specs
+
+validate_animations: $(SOURCE_DIR)/docs/lottie.schema.json
+validate_animations: $(SOURCE_DIR)/tests/validate_animations.test.js
+validate_animations: $(wildcard $(SOURCE_DIR)/tests/**/*.json)
+validate_animations: $(wildcard $(SOURCE_DIR)/docs/static/examples/**/*.json)
+	npm test