         XCTAssertEqual(term("a^1.9.0").relation(with: "a@2.0.0"), .disjoint)
         XCTAssertEqual(term("a^2.0.0").relation(with: "a@1.0.0"), .disjoint)
         XCTAssertEqual(term("a@1.0.0").relation(with: "a@master"), .disjoint)
+        XCTAssertEqual(term("a^1.0.0").relation(with: "a@master"), .disjoint)
+        XCTAssertEqual(term("a@master").relation(with: "a@1.0.0"), .disjoint)
         XCTAssertEqual(term("a@master").relation(with: "a^1.0.0"), .disjoint)
         XCTAssertEqual(term("a@master").relation(with: "a@master"), .subset)
         XCTAssertEqual(term("a@master").relation(with: "a@develop"), .disjoint)

        XCTAssertEqual(term("¬a^2.0.0").relation(with: "¬a^1.0.0"), .overlap)
        XCTAssertEqual(term("¬a^1.5.0").relation(with: "¬a^1.0.0"), .overlap)
        XCTAssertEqual(term("¬a@1.0.0").relation(with: "¬a@master"), .disjoint)
        XCTAssertEqual(term("¬a@master").relation(with: "¬a^1.0.0"), .disjoint)
        XCTAssertEqual(term("¬a@master").relation(with: "¬a@master"), .subset)
        XCTAssertEqual(term("¬a@master").relation(with: "¬a@develop"), .disjoint)

        XCTAssertEqual(term("¬a^1.5.0").relation(with: "a^1.0.0"), .overlap)
        XCTAssertEqual(term("¬a^2.0.0").relation(with: "a^1.5.0"), .overlap)
        XCTAssertEqual(term("¬a@1.0.0").relation(with: "a@master"), .disjoint)
        XCTAssertEqual(term("¬a^1.0.0").relation(with: "a@master"), .disjoint)
        XCTAssertEqual(term("¬a@master").relation(with: "a@1.0.0"), .disjoint)
        XCTAssertEqual(term("¬a@master").relation(with: "a^1.0.0"), .disjoint)
        XCTAssertEqual(term("¬a@master").relation(with: "a@master"), .disjoint)
        XCTAssertEqual(term("¬a@master").relation(with: "a@develop"), .disjoint)
