Added PullRequestLabelFilterImplTest.java (#109)

Author: Puffy1215

src/test/java/com/gitee/jenkins/trigger/filter/PullRequestLabelFilterImplTest.java

@@ -0,0 +1,46 @@
+package com.gitee.jenkins.trigger.filter;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.MatcherAssert.assertThat;
+
+import java.util.Arrays;
+import java.util.Collections;
+import org.junit.jupiter.api.Test;
+
+/**
+ * @author Robin Müller
+ */
+class PullRequestLabelFilterImplTest {
+
+    @Test
+    void includeLabels() {
+        PullRequestLabelFilterImpl pullRequestLabelFilter = new PullRequestLabelFilterImpl("include, include2", "");
+
+        assertThat(pullRequestLabelFilter.isPullRequestAllowed(Collections.singleton("include")), is(true));
+        assertThat(pullRequestLabelFilter.isPullRequestAllowed(Collections.singleton("include2")), is(true));
+        assertThat(pullRequestLabelFilter.isPullRequestAllowed(Collections.singleton("other-label")), is(false));
+    }
+
+    @Test
+    void excludeLabels() {
+        PullRequestLabelFilterImpl pullRequestLabelFilter = new PullRequestLabelFilterImpl("", "exclude, exclude2");
+
+        assertThat(pullRequestLabelFilter.isPullRequestAllowed(Collections.singleton("exclude")), is(false));
+        assertThat(pullRequestLabelFilter.isPullRequestAllowed(Collections.singleton("exclude2")), is(false));
+        assertThat(pullRequestLabelFilter.isPullRequestAllowed(Collections.singleton("other-label")), is(true));
+        assertThat(pullRequestLabelFilter.isPullRequestAllowed(Collections.emptySet()), is(true));
+    }
+
+    @Test
+    void includeAndExcludeLabels() {
+        PullRequestLabelFilterImpl pullRequestLabelFilter =
+                new PullRequestLabelFilterImpl("include, include2", "exclude, exclude2");
+
+        assertThat(pullRequestLabelFilter.isPullRequestAllowed(Collections.singleton("include")), is(true));
+        assertThat(pullRequestLabelFilter.isPullRequestAllowed(Collections.singleton("include2")), is(true));
+        assertThat(pullRequestLabelFilter.isPullRequestAllowed(Collections.singleton("exclude")), is(false));
+        assertThat(pullRequestLabelFilter.isPullRequestAllowed(Collections.singleton("exclude2")), is(false));
+        assertThat(pullRequestLabelFilter.isPullRequestAllowed(Collections.singleton("other-label")), is(false));
+        assertThat(pullRequestLabelFilter.isPullRequestAllowed(Arrays.asList("include", "exclude")), is(false));
+    }
+}