Merge pull request jenkinsci#662 from naveennvrgup/MatrixBridge-tests

Unittest for MatrixBridge

plugin/src/test/java/io/jenkins/plugins/analysis/core/steps/MatrixBridgeTest.java

@@ -0,0 +1,59 @@
+package io.jenkins.plugins.analysis.core.steps;
+
+import org.junit.jupiter.api.Test;
+
+import hudson.Launcher;
+import hudson.matrix.MatrixAggregator;
+import hudson.matrix.MatrixBuild;
+import hudson.matrix.MatrixProject;
+import hudson.model.BuildListener;
+import hudson.util.DescribableList;
+
+import static org.assertj.core.api.Assertions.*;
+import static org.mockito.Mockito.*;
+
+/**
+ * Tests the class {@link MatrixBridge}.
+ *
+ * @author Naveen Sundar
+ */
+class MatrixBridgeTest {
+
+    @Test
+    void constructMatrixAggregatorWithoutRecorder() {
+        MatrixBuild build = createBuild(false);
+        MatrixAggregator aggregator = createAggregator(build);
+
+        assertThat(aggregator).isNull();
+    }
+
+    @Test
+    void constructMatrixAggregatorWithRecorder() {
+        MatrixBuild build = createBuild(true);
+        MatrixAggregator aggregator = createAggregator(build);
+
+        assertThat(aggregator).isNotNull();
+    }
+
+    private MatrixBuild createBuild(final boolean withIssueRecorder) {
+        MatrixBuild build = mock(MatrixBuild.class);
+        MatrixProject matrixProject = mock(MatrixProject.class);
+        DescribableList describableList = mock(DescribableList.class);
+
+        when(build.getParent()).thenReturn(matrixProject);
+        when(matrixProject.getPublishersList()).thenReturn(describableList);
+
+        if (withIssueRecorder) {
+            when(describableList.get(IssuesRecorder.class)).thenReturn(mock(IssuesRecorder.class));
+        }
+        else {
+            when(describableList.get(IssuesRecorder.class)).thenReturn(null);
+        }
+
+        return build;
+    }
+
+    private MatrixAggregator createAggregator(final MatrixBuild build) {
+        return new MatrixBridge().createAggregator(build, mock(Launcher.class), mock(BuildListener.class));
+    }
+}