test: e2e with workflow

.github/workflows/e2e-test.yml

@@ -0,0 +1,36 @@
+name: E2E tests
+
+on:
+  push:
+    branches: ['develop']
+  pull_request:
+    branches: ['develop']
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [18.x]
+        # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: 'npm'
+
+      - name: Install Dependencies
+        run: npm install
+
+      - name: Install Cosma
+        run: npm install . --global
+
+      - name: Build cosmoscopes
+        run: sh ./e2e/exec-modelize.sh
+
+      - name: Run E2E tests
+        run: npm run test:e2e

.gitignore

@@ -2,4 +2,4 @@
 **/temp
 .DS_Store
 /build
-config.yml
+cosmoscope.html

core/models/graph.js

@@ -91,8 +91,7 @@ module.exports = class Graph {
     const [begin, end] = extent(dates);
     return {
       begin,
-      // Add margin of one second to display oldest node at end of timeline
-      end: end + 1,
+      end: end,
     };
   }