diff --git a/eth2/types/src/slot_epoch.rs b/eth2/types/src/slot_epoch.rs
index c1554034a..eb5a8dced 100644
--- a/eth2/types/src/slot_epoch.rs
+++ b/eth2/types/src/slot_epoch.rs
@@ -100,373 +100,19 @@ impl<'a> Iterator for SlotIter<'a> {
 }
 
 #[cfg(test)]
-mod tests {
+mod slot_tests {
     use super::*;
+    use crate::test_utils::{SeedableRng, TestRandom, XorShiftRng};
+    use ssz::ssz_encode;
 
-    macro_rules! new_tests {
-        ($type: ident) => {
-            #[test]
-            fn new() {
-                assert_eq!($type(0), $type::new(0));
-                assert_eq!($type(3), $type::new(3));
-                assert_eq!($type(u64::max_value()), $type::new(u64::max_value()));
-            }
-        };
-    }
-
-    macro_rules! from_into_tests {
-        ($type: ident, $other: ident) => {
-            #[test]
-            fn into() {
-                let x: $other = $type(0).into();
-                assert_eq!(x, 0);
-
-                let x: $other = $type(3).into();
-                assert_eq!(x, 3);
-
-                let x: $other = $type(u64::max_value()).into();
-                // Note: this will fail on 32 bit systems. This is expected as we don't have a proper
-                // 32-bit system strategy in place.
-                assert_eq!(x, $other::max_value());
-            }
-
-            #[test]
-            fn from() {
-                assert_eq!($type(0), $type::from(0_u64));
-                assert_eq!($type(3), $type::from(3_u64));
-                assert_eq!($type(u64::max_value()), $type::from($other::max_value()));
-            }
-        };
-    }
-
-    macro_rules! math_between_tests {
-        ($type: ident, $other: ident) => {
-            #[test]
-            fn partial_ord() {
-                let assert_partial_ord = |a: u64, partial_ord: Ordering, b: u64| {
-                    let other: $other = $type(b).into();
-                    assert_eq!($type(a).partial_cmp(&other), Some(partial_ord));
-                };
-
-                assert_partial_ord(1, Ordering::Less, 2);
-                assert_partial_ord(2, Ordering::Greater, 1);
-                assert_partial_ord(0, Ordering::Less, u64::max_value());
-                assert_partial_ord(u64::max_value(), Ordering::Greater, 0);
-            }
-
-            #[test]
-            fn partial_eq() {
-                let assert_partial_eq = |a: u64, b: u64, is_equal: bool| {
-                    let other: $other = $type(b).into();
-                    assert_eq!($type(a).eq(&other), is_equal);
-                };
-
-                assert_partial_eq(0, 0, true);
-                assert_partial_eq(0, 1, false);
-                assert_partial_eq(1, 0, false);
-                assert_partial_eq(1, 1, true);
-
-                assert_partial_eq(u64::max_value(), u64::max_value(), true);
-                assert_partial_eq(0, u64::max_value(), false);
-                assert_partial_eq(u64::max_value(), 0, false);
-            }
-
-            #[test]
-            fn add_and_add_assign() {
-                let assert_add = |a: u64, b: u64, result: u64| {
-                    let other: $other = $type(b).into();
-                    assert_eq!($type(a) + other, $type(result));
-
-                    let mut add_assigned = $type(a);
-                    add_assigned += other;
-
-                    assert_eq!(add_assigned, $type(result));
-                };
-
-                assert_add(0, 1, 1);
-                assert_add(1, 0, 1);
-                assert_add(1, 2, 3);
-                assert_add(2, 1, 3);
-                assert_add(7, 7, 14);
-
-                // Addition should be saturating.
-                assert_add(u64::max_value(), 1, u64::max_value());
-                assert_add(u64::max_value(), u64::max_value(), u64::max_value());
-            }
-
-            #[test]
-            fn sub_and_sub_assign() {
-                let assert_sub = |a: u64, b: u64, result: u64| {
-                    let other: $other = $type(b).into();
-                    assert_eq!($type(a) - other, $type(result));
-
-                    let mut sub_assigned = $type(a);
-                    sub_assigned -= other;
-
-                    assert_eq!(sub_assigned, $type(result));
-                };
-
-                assert_sub(1, 0, 1);
-                assert_sub(2, 1, 1);
-                assert_sub(14, 7, 7);
-                assert_sub(u64::max_value(), 1, u64::max_value() - 1);
-                assert_sub(u64::max_value(), u64::max_value(), 0);
-
-                // Subtraction should be saturating
-                assert_sub(0, 1, 0);
-                assert_sub(1, 2, 0);
-            }
-
-            #[test]
-            fn mul_and_mul_assign() {
-                let assert_mul = |a: u64, b: u64, result: u64| {
-                    let other: $other = $type(b).into();
-                    assert_eq!($type(a) * other, $type(result));
-
-                    let mut mul_assigned = $type(a);
-                    mul_assigned *= other;
-
-                    assert_eq!(mul_assigned, $type(result));
-                };
-
-                assert_mul(2, 2, 4);
-                assert_mul(1, 2, 2);
-                assert_mul(0, 2, 0);
-
-                // Multiplication should be saturating.
-                assert_mul(u64::max_value(), 2, u64::max_value());
-            }
-
-            #[test]
-            fn div_and_div_assign() {
-                let assert_div = |a: u64, b: u64, result: u64| {
-                    let other: $other = $type(b).into();
-                    assert_eq!($type(a) / other, $type(result));
-
-                    let mut div_assigned = $type(a);
-                    div_assigned /= other;
-
-                    assert_eq!(div_assigned, $type(result));
-                };
-
-                assert_div(0, 2, 0);
-                assert_div(2, 2, 1);
-                assert_div(100, 50, 2);
-                assert_div(128, 2, 64);
-                assert_div(u64::max_value(), 2, 2_u64.pow(63) - 1);
-            }
-
-            #[test]
-            #[should_panic]
-            fn div_panics_with_divide_by_zero() {
-                let other: $other = $type(0).into();
-                let _ = $type(2) / other;
-            }
-
-            #[test]
-            #[should_panic]
-            fn div_assign_panics_with_divide_by_zero() {
-                let other: $other = $type(0).into();
-                let mut assigned = $type(2);
-                assigned /= other;
-            }
-
-            #[test]
-            fn rem() {
-                let assert_rem = |a: u64, b: u64, result: u64| {
-                    let other: $other = $type(b).into();
-                    assert_eq!($type(a) % other, $type(result));
-                };
-
-                assert_rem(3, 2, 1);
-                assert_rem(40, 2, 0);
-                assert_rem(10, 100, 10);
-                assert_rem(302042, 3293, 2379);
-            }
-        };
-    }
-
-    macro_rules! math_tests {
-        ($type: ident) => {
-            #[test]
-            fn saturating_sub() {
-                let assert_saturating_sub = |a: u64, b: u64, result: u64| {
-                    assert_eq!($type(a).saturating_sub($type(b)), $type(result));
-                };
-
-                assert_saturating_sub(1, 0, 1);
-                assert_saturating_sub(2, 1, 1);
-                assert_saturating_sub(14, 7, 7);
-                assert_saturating_sub(u64::max_value(), 1, u64::max_value() - 1);
-                assert_saturating_sub(u64::max_value(), u64::max_value(), 0);
-
-                // Subtraction should be saturating
-                assert_saturating_sub(0, 1, 0);
-                assert_saturating_sub(1, 2, 0);
-            }
-
-            #[test]
-            fn saturating_add() {
-                let assert_saturating_add = |a: u64, b: u64, result: u64| {
-                    assert_eq!($type(a).saturating_add($type(b)), $type(result));
-                };
-
-                assert_saturating_add(0, 1, 1);
-                assert_saturating_add(1, 0, 1);
-                assert_saturating_add(1, 2, 3);
-                assert_saturating_add(2, 1, 3);
-                assert_saturating_add(7, 7, 14);
-
-                // Addition should be saturating.
-                assert_saturating_add(u64::max_value(), 1, u64::max_value());
-                assert_saturating_add(u64::max_value(), u64::max_value(), u64::max_value());
-            }
-
-            #[test]
-            fn checked_div() {
-                let assert_checked_div = |a: u64, b: u64, result: Option<u64>| {
-                    let division_result_as_u64 = match $type(a).checked_div($type(b)) {
-                        None => None,
-                        Some(val) => Some(val.as_u64()),
-                    };
-                    assert_eq!(division_result_as_u64, result);
-                };
-
-                assert_checked_div(0, 2, Some(0));
-                assert_checked_div(2, 2, Some(1));
-                assert_checked_div(100, 50, Some(2));
-                assert_checked_div(128, 2, Some(64));
-                assert_checked_div(u64::max_value(), 2, Some(2_u64.pow(63) - 1));
-
-                assert_checked_div(2, 0, None);
-                assert_checked_div(0, 0, None);
-                assert_checked_div(u64::max_value(), 0, None);
-            }
-
-            #[test]
-            fn is_power_of_two() {
-                let assert_is_power_of_two = |a: u64, result: bool| {
-                    assert_eq!(
-                        $type(a).is_power_of_two(),
-                        result,
-                        "{}.is_power_of_two() != {}",
-                        a,
-                        result
-                    );
-                };
-
-                assert_is_power_of_two(0, false);
-                assert_is_power_of_two(1, true);
-                assert_is_power_of_two(2, true);
-                assert_is_power_of_two(3, false);
-                assert_is_power_of_two(4, true);
-
-                assert_is_power_of_two(2_u64.pow(4), true);
-                assert_is_power_of_two(u64::max_value(), false);
-            }
-
-            #[test]
-            fn ord() {
-                let assert_ord = |a: u64, ord: Ordering, b: u64| {
-                    assert_eq!($type(a).cmp(&$type(b)), ord);
-                };
-
-                assert_ord(1, Ordering::Less, 2);
-                assert_ord(2, Ordering::Greater, 1);
-                assert_ord(0, Ordering::Less, u64::max_value());
-                assert_ord(u64::max_value(), Ordering::Greater, 0);
-            }
-        };
-    }
-
-    macro_rules! ssz_tests {
-        ($type: ident) => {
-            #[test]
-            pub fn test_ssz_round_trip() {
-                let mut rng = XorShiftRng::from_seed([42; 16]);
-                let original = $type::random_for_test(&mut rng);
-
-                let bytes = ssz_encode(&original);
-                let (decoded, _) = $type::ssz_decode(&bytes, 0).unwrap();
-
-                assert_eq!(original, decoded);
-            }
-
-            #[test]
-            pub fn test_hash_tree_root() {
-                let mut rng = XorShiftRng::from_seed([42; 16]);
-                let original = $type::random_for_test(&mut rng);
-
-                let result = original.hash_tree_root();
-
-                assert_eq!(result.len(), 32);
-                // TODO: Add further tests
-                // https://github.com/sigp/lighthouse/issues/170
-            }
-        };
-    }
-
-    macro_rules! all_tests {
-        ($type: ident) => {
-            new_tests!($type);
-            math_between_tests!($type, $type);
-            math_tests!($type);
-            ssz_tests!($type);
-
-            mod u64_tests {
-                use super::*;
-
-                from_into_tests!($type, u64);
-                math_between_tests!($type, u64);
-
-                #[test]
-                pub fn as_64() {
-                    let x = $type(0).as_u64();
-                    assert_eq!(x, 0);
-
-                    let x = $type(3).as_u64();
-                    assert_eq!(x, 3);
-
-                    let x = $type(u64::max_value()).as_u64();
-                    assert_eq!(x, u64::max_value());
-                }
-            }
-
-            mod usize_tests {
-                use super::*;
-
-                from_into_tests!($type, usize);
-
-                #[test]
-                pub fn as_usize() {
-                    let x = $type(0).as_usize();
-                    assert_eq!(x, 0);
-
-                    let x = $type(3).as_usize();
-                    assert_eq!(x, 3);
-
-                    let x = $type(u64::max_value()).as_usize();
-                    assert_eq!(x, usize::max_value());
-                }
-            }
-        };
-    }
-
-    #[cfg(test)]
-    mod slot_tests {
-        use super::*;
-        use crate::test_utils::{SeedableRng, TestRandom, XorShiftRng};
-        use ssz::ssz_encode;
-
-        all_tests!(Slot);
-    }
-
-    #[cfg(test)]
-    mod epoch_tests {
-        use super::*;
-        use crate::test_utils::{SeedableRng, TestRandom, XorShiftRng};
-        use ssz::ssz_encode;
-
-        all_tests!(Epoch);
-    }
+    all_tests!(Slot);
+}
+
+#[cfg(test)]
+mod epoch_tests {
+    use super::*;
+    use crate::test_utils::{SeedableRng, TestRandom, XorShiftRng};
+    use ssz::ssz_encode;
+
+    all_tests!(Epoch);
 }
diff --git a/eth2/types/src/slot_epoch_macros.rs b/eth2/types/src/slot_epoch_macros.rs
index 6813bfeaf..48bc219da 100644
--- a/eth2/types/src/slot_epoch_macros.rs
+++ b/eth2/types/src/slot_epoch_macros.rs
@@ -263,3 +263,359 @@ macro_rules! impl_common {
         impl_hash!($type);
     };
 }
+
+// test macros
+#[allow(unused_macros)]
+macro_rules! new_tests {
+    ($type: ident) => {
+        #[test]
+        fn new() {
+            assert_eq!($type(0), $type::new(0));
+            assert_eq!($type(3), $type::new(3));
+            assert_eq!($type(u64::max_value()), $type::new(u64::max_value()));
+        }
+    };
+}
+
+#[allow(unused_macros)]
+macro_rules! from_into_tests {
+    ($type: ident, $other: ident) => {
+        #[test]
+        fn into() {
+            let x: $other = $type(0).into();
+            assert_eq!(x, 0);
+
+            let x: $other = $type(3).into();
+            assert_eq!(x, 3);
+
+            let x: $other = $type(u64::max_value()).into();
+            // Note: this will fail on 32 bit systems. This is expected as we don't have a proper
+            // 32-bit system strategy in place.
+            assert_eq!(x, $other::max_value());
+        }
+
+        #[test]
+        fn from() {
+            assert_eq!($type(0), $type::from(0_u64));
+            assert_eq!($type(3), $type::from(3_u64));
+            assert_eq!($type(u64::max_value()), $type::from($other::max_value()));
+        }
+    };
+}
+
+#[allow(unused_macros)]
+macro_rules! math_between_tests {
+    ($type: ident, $other: ident) => {
+        #[test]
+        fn partial_ord() {
+            let assert_partial_ord = |a: u64, partial_ord: Ordering, b: u64| {
+                let other: $other = $type(b).into();
+                assert_eq!($type(a).partial_cmp(&other), Some(partial_ord));
+            };
+
+            assert_partial_ord(1, Ordering::Less, 2);
+            assert_partial_ord(2, Ordering::Greater, 1);
+            assert_partial_ord(0, Ordering::Less, u64::max_value());
+            assert_partial_ord(u64::max_value(), Ordering::Greater, 0);
+        }
+
+        #[test]
+        fn partial_eq() {
+            let assert_partial_eq = |a: u64, b: u64, is_equal: bool| {
+                let other: $other = $type(b).into();
+                assert_eq!($type(a).eq(&other), is_equal);
+            };
+
+            assert_partial_eq(0, 0, true);
+            assert_partial_eq(0, 1, false);
+            assert_partial_eq(1, 0, false);
+            assert_partial_eq(1, 1, true);
+
+            assert_partial_eq(u64::max_value(), u64::max_value(), true);
+            assert_partial_eq(0, u64::max_value(), false);
+            assert_partial_eq(u64::max_value(), 0, false);
+        }
+
+        #[test]
+        fn add_and_add_assign() {
+            let assert_add = |a: u64, b: u64, result: u64| {
+                let other: $other = $type(b).into();
+                assert_eq!($type(a) + other, $type(result));
+
+                let mut add_assigned = $type(a);
+                add_assigned += other;
+
+                assert_eq!(add_assigned, $type(result));
+            };
+
+            assert_add(0, 1, 1);
+            assert_add(1, 0, 1);
+            assert_add(1, 2, 3);
+            assert_add(2, 1, 3);
+            assert_add(7, 7, 14);
+
+            // Addition should be saturating.
+            assert_add(u64::max_value(), 1, u64::max_value());
+            assert_add(u64::max_value(), u64::max_value(), u64::max_value());
+        }
+
+        #[test]
+        fn sub_and_sub_assign() {
+            let assert_sub = |a: u64, b: u64, result: u64| {
+                let other: $other = $type(b).into();
+                assert_eq!($type(a) - other, $type(result));
+
+                let mut sub_assigned = $type(a);
+                sub_assigned -= other;
+
+                assert_eq!(sub_assigned, $type(result));
+            };
+
+            assert_sub(1, 0, 1);
+            assert_sub(2, 1, 1);
+            assert_sub(14, 7, 7);
+            assert_sub(u64::max_value(), 1, u64::max_value() - 1);
+            assert_sub(u64::max_value(), u64::max_value(), 0);
+
+            // Subtraction should be saturating
+            assert_sub(0, 1, 0);
+            assert_sub(1, 2, 0);
+        }
+
+        #[test]
+        fn mul_and_mul_assign() {
+            let assert_mul = |a: u64, b: u64, result: u64| {
+                let other: $other = $type(b).into();
+                assert_eq!($type(a) * other, $type(result));
+
+                let mut mul_assigned = $type(a);
+                mul_assigned *= other;
+
+                assert_eq!(mul_assigned, $type(result));
+            };
+
+            assert_mul(2, 2, 4);
+            assert_mul(1, 2, 2);
+            assert_mul(0, 2, 0);
+
+            // Multiplication should be saturating.
+            assert_mul(u64::max_value(), 2, u64::max_value());
+        }
+
+        #[test]
+        fn div_and_div_assign() {
+            let assert_div = |a: u64, b: u64, result: u64| {
+                let other: $other = $type(b).into();
+                assert_eq!($type(a) / other, $type(result));
+
+                let mut div_assigned = $type(a);
+                div_assigned /= other;
+
+                assert_eq!(div_assigned, $type(result));
+            };
+
+            assert_div(0, 2, 0);
+            assert_div(2, 2, 1);
+            assert_div(100, 50, 2);
+            assert_div(128, 2, 64);
+            assert_div(u64::max_value(), 2, 2_u64.pow(63) - 1);
+        }
+
+        #[test]
+        #[should_panic]
+        fn div_panics_with_divide_by_zero() {
+            let other: $other = $type(0).into();
+            let _ = $type(2) / other;
+        }
+
+        #[test]
+        #[should_panic]
+        fn div_assign_panics_with_divide_by_zero() {
+            let other: $other = $type(0).into();
+            let mut assigned = $type(2);
+            assigned /= other;
+        }
+
+        #[test]
+        fn rem() {
+            let assert_rem = |a: u64, b: u64, result: u64| {
+                let other: $other = $type(b).into();
+                assert_eq!($type(a) % other, $type(result));
+            };
+
+            assert_rem(3, 2, 1);
+            assert_rem(40, 2, 0);
+            assert_rem(10, 100, 10);
+            assert_rem(302042, 3293, 2379);
+        }
+    };
+}
+
+#[allow(unused_macros)]
+macro_rules! math_tests {
+    ($type: ident) => {
+        #[test]
+        fn saturating_sub() {
+            let assert_saturating_sub = |a: u64, b: u64, result: u64| {
+                assert_eq!($type(a).saturating_sub($type(b)), $type(result));
+            };
+
+            assert_saturating_sub(1, 0, 1);
+            assert_saturating_sub(2, 1, 1);
+            assert_saturating_sub(14, 7, 7);
+            assert_saturating_sub(u64::max_value(), 1, u64::max_value() - 1);
+            assert_saturating_sub(u64::max_value(), u64::max_value(), 0);
+
+            // Subtraction should be saturating
+            assert_saturating_sub(0, 1, 0);
+            assert_saturating_sub(1, 2, 0);
+        }
+
+        #[test]
+        fn saturating_add() {
+            let assert_saturating_add = |a: u64, b: u64, result: u64| {
+                assert_eq!($type(a).saturating_add($type(b)), $type(result));
+            };
+
+            assert_saturating_add(0, 1, 1);
+            assert_saturating_add(1, 0, 1);
+            assert_saturating_add(1, 2, 3);
+            assert_saturating_add(2, 1, 3);
+            assert_saturating_add(7, 7, 14);
+
+            // Addition should be saturating.
+            assert_saturating_add(u64::max_value(), 1, u64::max_value());
+            assert_saturating_add(u64::max_value(), u64::max_value(), u64::max_value());
+        }
+
+        #[test]
+        fn checked_div() {
+            let assert_checked_div = |a: u64, b: u64, result: Option<u64>| {
+                let division_result_as_u64 = match $type(a).checked_div($type(b)) {
+                    None => None,
+                    Some(val) => Some(val.as_u64()),
+                };
+                assert_eq!(division_result_as_u64, result);
+            };
+
+            assert_checked_div(0, 2, Some(0));
+            assert_checked_div(2, 2, Some(1));
+            assert_checked_div(100, 50, Some(2));
+            assert_checked_div(128, 2, Some(64));
+            assert_checked_div(u64::max_value(), 2, Some(2_u64.pow(63) - 1));
+
+            assert_checked_div(2, 0, None);
+            assert_checked_div(0, 0, None);
+            assert_checked_div(u64::max_value(), 0, None);
+        }
+
+        #[test]
+        fn is_power_of_two() {
+            let assert_is_power_of_two = |a: u64, result: bool| {
+                assert_eq!(
+                    $type(a).is_power_of_two(),
+                    result,
+                    "{}.is_power_of_two() != {}",
+                    a,
+                    result
+                );
+            };
+
+            assert_is_power_of_two(0, false);
+            assert_is_power_of_two(1, true);
+            assert_is_power_of_two(2, true);
+            assert_is_power_of_two(3, false);
+            assert_is_power_of_two(4, true);
+
+            assert_is_power_of_two(2_u64.pow(4), true);
+            assert_is_power_of_two(u64::max_value(), false);
+        }
+
+        #[test]
+        fn ord() {
+            let assert_ord = |a: u64, ord: Ordering, b: u64| {
+                assert_eq!($type(a).cmp(&$type(b)), ord);
+            };
+
+            assert_ord(1, Ordering::Less, 2);
+            assert_ord(2, Ordering::Greater, 1);
+            assert_ord(0, Ordering::Less, u64::max_value());
+            assert_ord(u64::max_value(), Ordering::Greater, 0);
+        }
+    };
+}
+
+#[allow(unused_macros)]
+macro_rules! ssz_tests {
+    ($type: ident) => {
+        #[test]
+        pub fn test_ssz_round_trip() {
+            let mut rng = XorShiftRng::from_seed([42; 16]);
+            let original = $type::random_for_test(&mut rng);
+
+            let bytes = ssz_encode(&original);
+            let (decoded, _) = $type::ssz_decode(&bytes, 0).unwrap();
+
+            assert_eq!(original, decoded);
+        }
+
+        #[test]
+        pub fn test_hash_tree_root() {
+            let mut rng = XorShiftRng::from_seed([42; 16]);
+            let original = $type::random_for_test(&mut rng);
+
+            let result = original.hash_tree_root();
+
+            assert_eq!(result.len(), 32);
+            // TODO: Add further tests
+            // https://github.com/sigp/lighthouse/issues/170
+        }
+    };
+}
+
+#[allow(unused_macros)]
+macro_rules! all_tests {
+    ($type: ident) => {
+        new_tests!($type);
+        math_between_tests!($type, $type);
+        math_tests!($type);
+        ssz_tests!($type);
+
+        mod u64_tests {
+            use super::*;
+
+            from_into_tests!($type, u64);
+            math_between_tests!($type, u64);
+
+            #[test]
+            pub fn as_64() {
+                let x = $type(0).as_u64();
+                assert_eq!(x, 0);
+
+                let x = $type(3).as_u64();
+                assert_eq!(x, 3);
+
+                let x = $type(u64::max_value()).as_u64();
+                assert_eq!(x, u64::max_value());
+            }
+        }
+
+        mod usize_tests {
+            use super::*;
+
+            from_into_tests!($type, usize);
+
+            #[test]
+            pub fn as_usize() {
+                let x = $type(0).as_usize();
+                assert_eq!(x, 0);
+
+                let x = $type(3).as_usize();
+                assert_eq!(x, 3);
+
+                let x = $type(u64::max_value()).as_usize();
+                assert_eq!(x, usize::max_value());
+            }
+        }
+    };
+}
diff --git a/eth2/types/src/slot_height.rs b/eth2/types/src/slot_height.rs
index 3efd00cae..afa0ff775 100644
--- a/eth2/types/src/slot_height.rs
+++ b/eth2/types/src/slot_height.rs
@@ -32,3 +32,13 @@ impl SlotHeight {
         SlotHeight(u64::max_value())
     }
 }
+
+#[cfg(test)]
+
+mod slot_height_tests {
+    use super::*;
+    use crate::test_utils::{SeedableRng, TestRandom, XorShiftRng};
+    use ssz::ssz_encode;
+
+    all_tests!(SlotHeight);
+}