diff --git a/src/services/reputation/reputation/citation.spec.ts b/src/services/reputation/reputation/citation.spec.ts
new file mode 100644
index 0000000..5e20adb
--- /dev/null
+++ b/src/services/reputation/reputation/citation.spec.ts
@@ -0,0 +1,102 @@
+import { Edge } from "../graph.interface";
+import { Citation } from "./citation";
+import { Member } from "./member";
+import { Post } from "./post";
+
+
+describe('Reputation Service Citation', () => {
+
+    let testingPostA: Post;
+    let testingPostB: Post;
+    let testingCitation: Citation;
+
+    const TEST_AUTHOR_A = new Member("testAuthorA");
+    const TEST_TITLE_A = "The Hitchhiker's Guide to the Galaxy";
+    const TEST_CONTENT_A = "The ships hung in the sky in much the same way that bricks don't.";
+
+    const TEST_AUTHOR_B = new Member("testAuthorB");
+    const TEST_TITLE_B = "The Restaurant at the End of the Universe";
+    const TEST_CONTENT_B = "The story so far: In the beginning the Universe was created. This has made a lot of people very angry and been widely regarded as a bad move.";
+
+    beforeEach(() => {
+        testingPostA = new Post("testingPostA", TEST_TITLE_A, TEST_CONTENT_A, TEST_AUTHOR_A);
+        testingPostB = new Post("testingPostB", TEST_TITLE_B, TEST_CONTENT_B, TEST_AUTHOR_B);
+        testingCitation = new Citation("testingCitation", testingPostA, testingPostB, 10);
+    });
+
+    it('should be able to get all citations', () => {
+        const citations = Citation.getAllCitations();
+        expect(citations.length).toBe(1);
+    });
+
+    it('should be able to get a specific citation', () => {
+        const citation = Citation.getCitation("testingCitation");
+        expect(citation).toBeDefined();
+        expect(citation?.id).toBe("testingCitation");
+    });
+
+    it('should be able to create a new citation with random id', () => {
+        const citation = new Citation(null, testingPostA, testingPostB, 10);
+        expect(typeof citation.id).toBe("string");
+        expect(citation.id.length).toBeGreaterThan(5);
+    });
+
+    it('should be able to create a new citation with specific id', () => {
+        const citation = new Citation("testing", testingPostA, testingPostB, 10);
+        expect(citation.id).toBe("testing");
+    });
+
+    it('should be able to get the id of a citation', () => {
+        expect(testingCitation.id).toBe("testingCitation");
+    });
+
+    it('should be able to get if the citation is directional', () => {
+        expect(testingCitation.directional).toBe(true);
+    });
+
+    it('should be able to get the sourcePost from a citation', () => {
+        expect(testingCitation.sourcePost).toBe(testingPostA);
+    });
+
+    it('should be able to get the citedPost from a citation', () => {
+        expect(testingCitation.citedPost).toBe(testingPostB);
+    });
+
+    it('should be able to get the impact of a citation', () => {
+        expect(testingCitation.impact).toBe(10);
+    });
+
+    it('should be able to get if a citation is neutral', () => {
+        const citation = new Citation("testing", testingPostA, testingPostB, 0);
+        expect(citation.isNeutral()).toBe(true);
+    });
+
+    it('should be able to get if a citation is positive', () => {
+        const citation = new Citation("testing", testingPostA, testingPostB, 10);
+        expect(citation.isPositive()).toBe(true);
+    });
+
+    it('should be able to get if a citation is negative', () => {
+        const citation = new Citation("testing", testingPostA, testingPostB, -10);
+        expect(citation.isNegative()).toBe(true);
+    });
+
+    it('should be able to get the parentVertex from Citation as an Edge', () => {
+        const edge = testingCitation as Edge;
+        expect(edge.parentVertex).toBeDefined();
+        expect(edge.parentVertex).toBe(testingPostB);
+    });
+
+    it('should be able to get the childVertex from Citation as an Edge', () => {
+        const edge = testingCitation as Edge;
+        expect(edge.childVertex).toBeDefined();
+        expect(edge.childVertex).toBe(testingPostA);
+    });
+
+    it('should be able to get the adjacent Vertex from Citation as an Edge', () => {
+        const edge = testingCitation as Edge;
+        expect(edge.getAdjacent(testingPostA)).toBe(testingPostB);
+        expect(edge.getAdjacent(testingPostB)).toBe(testingPostA);
+    });
+    
+});
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