diff --git a/abs_test.go b/abs_test.go
new file mode 100644
index 0000000..9c908f0
--- /dev/null
+++ b/abs_test.go
@@ -0,0 +1,95 @@
+package govec
+
+import "testing"
+
+func TestV2F_Abs(t *testing.T) {
+	vectors := []V2F[float64]{
+		{X: 0.0, Y: 0.0},
+		{X: -1.0, Y: 0.0},
+		{X: 0.0, Y: -1.0},
+		{X: 1, Y: 1},
+	}
+	expectedAbsResult := []V2F[float64]{
+		{X: 0.0, Y: 0.0},
+		{X: 1.0, Y: 0.0},
+		{X: 0.0, Y: 1.0},
+		{X: 1.0, Y: 1.0},
+	}
+	for idx, vector := range vectors {
+		absV := vector.Abs()
+		expectedAbsV := expectedAbsResult[idx]
+		if absV.X != expectedAbsV.X || absV.Y != expectedAbsV.Y {
+			t.Errorf("%#v.Abs() incorrect. expected: %#v, got: %#v", vector, expectedAbsV, absV)
+		}
+	}
+}
+
+func TestV2F_AbsInPlace(t *testing.T) {
+	vectors := []V2F[float64]{
+		{X: 0.0, Y: 0.0},
+		{X: -1.0, Y: 0.0},
+		{X: 0.0, Y: -1.0},
+		{X: 1, Y: 1},
+	}
+	expectedAbsInPlaceResult := []V2F[float64]{
+		{X: 0.0, Y: 0.0},
+		{X: 1.0, Y: 0.0},
+		{X: 0.0, Y: 1.0},
+		{X: 1.0, Y: 1.0},
+	}
+	for idx, vector := range vectors {
+		vector.AbsInPlace()
+		expectedAbsV := expectedAbsInPlaceResult[idx]
+		if vector.X != expectedAbsV.X || vector.Y != expectedAbsV.Y {
+			t.Errorf("%#v.AbsInPlace() incorrect. expected: %#v, got: %#v", vector, expectedAbsV, vector)
+		}
+	}
+}
+
+func TestV3F_Abs(t *testing.T) {
+	vectors := []V3F[float64]{
+		{X: 0.0, Y: 0.0, Z: 0.0},
+		{X: -1.0, Y: 0.0, Z: 0.0},
+		{X: 0.0, Y: -1.0, Z: 0.0},
+		{X: 0.0, Y: 1.0, Z: -1.0},
+		{X: 1, Y: 1, Z: 0},
+	}
+	expectedAbsResult := []V3F[float64]{
+		{X: 0.0, Y: 0.0, Z: 0.0},
+		{X: 1.0, Y: 0.0, Z: 0.0},
+		{X: 0.0, Y: 1.0, Z: 0.0},
+		{X: 0.0, Y: 1.0, Z: 1.0},
+		{X: 1.0, Y: 1.0, Z: 0.0},
+	}
+	for idx, vector := range vectors {
+		absV := vector.Abs()
+		expectedAbsV := expectedAbsResult[idx]
+		if absV.X != expectedAbsV.X || absV.Y != expectedAbsV.Y || absV.Z != expectedAbsV.Z {
+			t.Errorf("%#v.Abs() incorrect. expected: %#v, got: %#v", vector, expectedAbsV, absV)
+		}
+	}
+}
+
+func TestV3F_AbsInPlace(t *testing.T) {
+	vectors := []V3F[float64]{
+		{X: 0.0, Y: 0.0, Z: 0.0},
+		{X: -1.0, Y: 0.0, Z: 0.0},
+		{X: 0.0, Y: -1.0, Z: 0.0},
+		{X: 0.0, Y: 1.0, Z: -1.0},
+		{X: 1, Y: 1, Z: 0},
+	}
+	expectedAbsInPlaceResult := []V3F[float64]{
+		{X: 0.0, Y: 0.0, Z: 0.0},
+		{X: 1.0, Y: 0.0, Z: 0.0},
+		{X: 0.0, Y: 1.0, Z: 0.0},
+		{X: 0.0, Y: 1.0, Z: 1.0},
+		{X: 1.0, Y: 1.0, Z: 0.0},
+	}
+	for idx, vector := range vectors {
+		vector.AbsInPlace()
+		expectedAbsV := expectedAbsInPlaceResult[idx]
+		if vector.X != expectedAbsV.X || vector.Y != expectedAbsV.Y || vector.Z != expectedAbsV.Z {
+			t.Errorf("%#v.AbsInPlace() incorrect. expected: %#v, got: %#v", vector, expectedAbsV, vector)
+		}
+	}
+}