diff --git a/src/test/java/org/flag4j/sparse_tensor/RealComplexCooTensorBinOpsTests.java b/src/test/java/org/flag4j/sparse_tensor/RealComplexCooTensorBinOpsTests.java
new file mode 100644
index 000000000..4c5e763e3
--- /dev/null
+++ b/src/test/java/org/flag4j/sparse_tensor/RealComplexCooTensorBinOpsTests.java
@@ -0,0 +1,141 @@
+package org.flag4j.sparse_tensor;
+
+import org.flag4j.arrays.sparse.CooCTensor;
+import org.flag4j.arrays.sparse.CooTensor;
+import org.flag4j.complex_numbers.CNumber;
+import org.flag4j.core.Shape;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class RealComplexCooTensorBinOpsTests {
+
+    CooTensor A;
+    Shape aShape;
+    double[] aEntries;
+    int[][] aIndices;
+
+    CooCTensor B;
+    Shape bShape;
+    CNumber[] bEntries;
+    int[][] bIndices;
+
+    CooCTensor exp;
+    Shape expShape;
+    CNumber[] expEntries;
+    int[][] expIndices;
+
+    @Test
+    void addTests() {
+        // -------------------------- Sub-case 1 --------------------------
+        aShape = new Shape(3, 16);
+        aEntries = new double[]{1.7463475926857943, -1.130295792343086, -1.4629436086045846, -0.3100760165046801, -0.09665657433974414, 0.13476509808719928, -0.0638077132075331};
+        aIndices = new int[][]{
+                {0, 2},
+                {0, 13},
+                {0, 15},
+                {1, 5},
+                {1, 13},
+                {2, 1},
+                {2, 3}};
+        A = new CooTensor(aShape, aEntries, aIndices);
+
+        bShape = new Shape(3, 16);
+        bEntries = new CNumber[]{new CNumber(0.318, 0.9927), new CNumber(0.3394, 0.6087), new CNumber(0.2087, 0.4036), new CNumber(0.8053, 0.9675), new CNumber(0.474, 0.0026), new CNumber(0.1479, 0.0052), new CNumber(0.0073, 0.7328)};
+        bIndices = new int[][]{
+                {0, 9},
+                {0, 12},
+                {1, 3},
+                {1, 4},
+                {2, 6},
+                {2, 9},
+                {2, 11}};
+        B = new CooCTensor(bShape, bEntries, bIndices);
+
+        expShape = new Shape(3, 16);
+        expEntries = new CNumber[]{new CNumber(1.7463475926857943, 0.0), new CNumber(0.318, 0.9927), new CNumber(0.3394, 0.6087), new CNumber(-1.130295792343086, 0.0), new CNumber(-1.4629436086045846, 0.0), new CNumber(0.2087, 0.4036), new CNumber(0.8053, 0.9675), new CNumber(-0.3100760165046801, 0.0), new CNumber(-0.09665657433974414, 0.0), new CNumber(0.13476509808719928, 0.0), new CNumber(-0.0638077132075331, 0.0), new CNumber(0.474, 0.0026), new CNumber(0.1479, 0.0052), new CNumber(0.0073, 0.7328)};
+        expIndices = new int[][]{
+                {0, 2},
+                {0, 9},
+                {0, 12},
+                {0, 13},
+                {0, 15},
+                {1, 3},
+                {1, 4},
+                {1, 5},
+                {1, 13},
+                {2, 1},
+                {2, 3},
+                {2, 6},
+                {2, 9},
+                {2, 11}};
+        exp = new CooCTensor(expShape, expEntries, expIndices);
+
+        assertEquals(exp, A.add(B));
+
+        // -------------------------- Sub-case 1 --------------------------
+        aShape = new Shape(5, 3, 2, 1, 8);
+        aEntries = new double[]{1.605979015236944, -1.2944465840036907, 0.18895750482591192, -0.7307330521229386, -0.4500047202309869, -0.2760206404103061, -0.05495875438029267, 0.4398947793476673, 1.485028116781792, 2.0853070263385405, -1.295509717819037, -0.19473190000656226};
+        aIndices = new int[][]{
+                {0, 0, 0, 0, 2},
+                {1, 0, 0, 0, 6},
+                {1, 1, 1, 0, 1},
+                {2, 1, 1, 0, 5},
+                {2, 2, 0, 0, 2},
+                {2, 2, 0, 0, 4},
+                {2, 2, 1, 0, 1},
+                {3, 0, 0, 0, 6},
+                {3, 1, 0, 0, 6},
+                {3, 1, 1, 0, 0},
+                {3, 2, 0, 0, 0},
+                {4, 2, 0, 0, 0}};
+        A = new CooTensor(aShape, aEntries, aIndices);
+
+        bShape = new Shape(5, 3, 2, 1, 8);
+        bEntries = new CNumber[]{new CNumber(0.2165, 0.1597), new CNumber(0.2, 0.8495), new CNumber(0.6178, 0.9117), new CNumber(0.7567, 0.522), new CNumber(0.5328, 0.1192), new CNumber(0.0001, 0.3608), new CNumber(0.8431, 0.8437), new CNumber(0.9877, 0.5206), new CNumber(0.2649, 0.8721), new CNumber(0.1699, 0.1777), new CNumber(0.1255, 0.0734), new CNumber(0.0357, 0.9614)};
+        bIndices = new int[][]{
+                {0, 1, 0, 0, 0},
+                {0, 1, 0, 0, 2},
+                {0, 1, 1, 0, 1},
+                {1, 2, 1, 0, 5},
+                {2, 1, 0, 0, 5},
+                {3, 1, 0, 0, 5},
+                {3, 1, 0, 0, 7},
+                {3, 1, 1, 0, 3},
+                {3, 2, 1, 0, 7},
+                {4, 1, 0, 0, 7},
+                {4, 2, 1, 0, 2},
+                {4, 2, 1, 0, 3}};
+        B = new CooCTensor(bShape, bEntries, bIndices);
+
+        expShape = new Shape(5, 3, 2, 1, 8);
+        expEntries = new CNumber[]{new CNumber(1.605979015236944, 0.0), new CNumber(0.2165, 0.1597), new CNumber(0.2, 0.8495), new CNumber(0.6178, 0.9117), new CNumber(-1.2944465840036907, 0.0), new CNumber(0.18895750482591192, 0.0), new CNumber(0.7567, 0.522), new CNumber(0.5328, 0.1192), new CNumber(-0.7307330521229386, 0.0), new CNumber(-0.4500047202309869, 0.0), new CNumber(-0.2760206404103061, 0.0), new CNumber(-0.05495875438029267, 0.0), new CNumber(0.4398947793476673, 0.0), new CNumber(0.0001, 0.3608), new CNumber(1.485028116781792, 0.0), new CNumber(0.8431, 0.8437), new CNumber(2.0853070263385405, 0.0), new CNumber(0.9877, 0.5206), new CNumber(-1.295509717819037, 0.0), new CNumber(0.2649, 0.8721), new CNumber(0.1699, 0.1777), new CNumber(-0.19473190000656226, 0.0), new CNumber(0.1255, 0.0734), new CNumber(0.0357, 0.9614)};
+        expIndices = new int[][]{
+                {0, 0, 0, 0, 2},
+                {0, 1, 0, 0, 0},
+                {0, 1, 0, 0, 2},
+                {0, 1, 1, 0, 1},
+                {1, 0, 0, 0, 6},
+                {1, 1, 1, 0, 1},
+                {1, 2, 1, 0, 5},
+                {2, 1, 0, 0, 5},
+                {2, 1, 1, 0, 5},
+                {2, 2, 0, 0, 2},
+                {2, 2, 0, 0, 4},
+                {2, 2, 1, 0, 1},
+                {3, 0, 0, 0, 6},
+                {3, 1, 0, 0, 5},
+                {3, 1, 0, 0, 6},
+                {3, 1, 0, 0, 7},
+                {3, 1, 1, 0, 0},
+                {3, 1, 1, 0, 3},
+                {3, 2, 0, 0, 0},
+                {3, 2, 1, 0, 7},
+                {4, 1, 0, 0, 7},
+                {4, 2, 0, 0, 0},
+                {4, 2, 1, 0, 2},
+                {4, 2, 1, 0, 3}};
+        exp = new CooCTensor(expShape, expEntries, expIndices);
+        assertEquals(exp, A.add(B));
+    }
+}
diff --git a/target/flag4j-v0.1.0-beta.jar b/target/flag4j-v0.1.0-beta.jar
index 2c1d72bc9..86348a284 100644
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