test(objectionary#1385): add test for DcsNoOneHashTransitive

eo-maven-plugin/src/test/java/org/eolang/maven/DcsNoOneHasTransitiveTest.java

@@ -0,0 +1,46 @@
+package org.eolang.maven;
+
+import java.util.Collections;
+import org.apache.maven.model.Dependency;
+import org.cactoos.scalar.LengthOf;
+import org.hamcrest.MatcherAssert;
+import org.hamcrest.Matchers;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+class DcsNoOneHasTransitiveTest {
+
+    @Test
+    void checksAllDependenciesWithoutTransitive() throws Exception {
+        MatcherAssert.assertThat(
+            new LengthOf(
+                new DcsNoOneHasTransitive(single("eo-collections"), d -> empty())).value(),
+            Matchers.equalTo(1L)
+        );
+    }
+
+    @Test
+    void checksAllDependenciesWithTransitive() {
+        Assertions.assertThrows(
+            IllegalStateException.class,
+            new DcsNoOneHasTransitive(single("eo-foo"), d -> single("eo-bar"))::iterator
+        );
+    }
+
+    private Dependencies empty() {
+        return Collections::emptyIterator;
+    }
+
+    private Dependencies single(final String artifact) {
+        return () -> Collections.singletonList(dependency(artifact)).iterator();
+    }
+
+    private Dependency dependency(final String artifact) {
+        final Dependency dependency = new Dependency();
+        dependency.setGroupId("org.eolang");
+        dependency.setArtifactId(artifact);
+        dependency.setVersion("0.1.0");
+        dependency.setScope("compile");
+        return dependency;
+    }
+}