Add test for span gaps

see #381

Author: AB-xdev

chartjs-java-model/src/test/java/software/xdev/chartjs/model/LineChartTest.java

@@ -0,0 +1,58 @@
+/*
+ * Copyright © 2023 XDEV Software (https://xdev.software)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package software.xdev.chartjs.model;
+
+import org.junit.jupiter.api.Test;
+
+import software.xdev.chartjs.model.charts.LineChart;
+import software.xdev.chartjs.model.data.LineData;
+import software.xdev.chartjs.model.dataset.LineDataset;
+import software.xdev.chartjs.model.options.LineOptions;
+
+
+@SuppressWarnings("java:S2699") // Done in custom method
+class LineChartTest extends AbstractChartTest
+{
+	@Test
+	void testWithSpanGaps()
+	{
+		final LineDataset dataset1 = new LineDataset()
+			.setLabel("A")
+			.setData(65, 59, null, 45, 80)
+			.setBorderColor("blue")
+			.setBackgroundColor("rgba(0, 0, 255, 0.2)");
+		
+		final LineDataset dataset2 = new LineDataset()
+			.setLabel("B")
+			.setData(28, 45, null, 45, 10)
+			.setBorderColor("gray");
+		
+		final LineData data = new LineData()
+			.addLabels("1", "2", "3", "4", "5")
+			.addDataset(dataset1)
+			.addDataset(dataset2);
+		
+		final LineOptions options = new LineOptions()
+			.setAnimation(false)
+			.setSpanGaps(true);
+		
+		this.createScreenshotAndCompare(
+			new LineChart(data, options),
+			this.getWebContainer(),
+			"SpanGaps"
+		);
+	}
+}