test: Remove dev-dependency insta

Our (few) snapshot tests don't need the infrastructure `insta` offers.

changelog: ignore

Author: jan-ferdinand

twenty-first/Cargo.toml

@@ -19,7 +19,6 @@ categories = ["cryptography", "mathematics"]
 blake3 = "1.5.5"
 bincode = "1.3.3"
 criterion = { version = "0.6", features = ["html_reports"] }
-insta = "1.42"
 proptest = "1.6"
 proptest-arbitrary-interop = "0.1"
 test-strategy = "0.4"

twenty-first/src/math/tip5.rs

@@ -735,7 +735,6 @@ pub(crate) mod tip5_tests {
     use std::hash::Hash;
     use std::ops::Mul;
 
-    use insta::assert_snapshot;
     use prop::sample::size_range;
     use proptest::prelude::*;
     use proptest_arbitrary_interop::arb;
@@ -1147,11 +1146,11 @@ pub(crate) mod tip5_tests {
     }
 
     #[test]
-    fn tip5_hasher_trait_test() {
+    fn tip5_hasher_trait_snapshot_test() {
         let mut hasher = Tip5::init();
         let data = b"hello world";
         hasher.write(data);
-        assert_snapshot!(hasher.finish(), @"2267905471610932299");
+        assert_eq!(hasher.finish(), 2267905471610932299);
     }
 
     #[proptest]

twenty-first/src/util_types/mmr/mmr_accumulator.rs

@@ -549,7 +549,6 @@ impl<'a> Arbitrary<'a> for MmrAccumulator {
 mod accumulator_mmr_tests {
     use std::cmp;
 
-    use insta::assert_snapshot;
     use itertools::Itertools;
     use itertools::izip;
     use num_traits::ConstZero;
@@ -1029,19 +1028,31 @@ mod accumulator_mmr_tests {
 
     #[test]
     fn bag_peaks_snapshot() {
+        let snapshot = |mmr: MmrAccumulator| mmr.bag_peaks().to_hex();
         let mut rng = StdRng::seed_from_u64(0x92ca758afeec6d29);
 
-        let empty_mmr = MmrAccumulator::new_from_leafs(vec![]);
-        assert_snapshot!(empty_mmr.bag_peaks().0[0], @"00941080798860502477");
+        let empty = MmrAccumulator::new_from_leafs(vec![]);
+        assert_eq!(
+            snapshot(empty),
+            "cd65052100640f0d27e5654f97c47e49899add2f265967ccbefee7264e9bc08f588542d9dc3d5ac5"
+        );
 
-        let one_leaf_mmr = MmrAccumulator::new_from_leafs(vec![rng.random()]);
-        assert_snapshot!(one_leaf_mmr.bag_peaks().0[0], @"16030278140236594076");
+        let one_leaf = MmrAccumulator::new_from_leafs(vec![rng.random()]);
+        assert_eq!(
+            snapshot(one_leaf),
+            "9cfb825709fd76de8c24daf437e1bd16a2ea512f2d2338ee417df51dae55905a49628d4f13a2f83e"
+        );
 
-        let two_leafs_mmr = MmrAccumulator::new_from_leafs(vec![rng.random()]);
-        assert_snapshot!(two_leafs_mmr.bag_peaks().0[0], @"09405464453414142998");
+        let two_leafs = MmrAccumulator::new_from_leafs(rng.random::<[_; 2]>().to_vec());
+        assert_eq!(
+            snapshot(two_leafs),
+            "20a22079d30e76c93215f54d986d414d657d4bd056fe8e9a38e87d432ce391cd1dab92f9b6d3442c"
+        );
 
-        let ten_peaks: [Digest; 10] = rng.random();
-        let ten_peak_mmr = MmrAccumulator::init(ten_peaks.to_vec(), 0b11_1111_1111);
-        assert_snapshot!(ten_peak_mmr.bag_peaks().0[0], @"03780783030734820370");
+        let ten_peaks = MmrAccumulator::init(rng.random::<[_; 10]>().to_vec(), 0b11_1111_1111);
+        assert_eq!(
+            snapshot(ten_peaks),
+            "42dbf8fcf51d4d8134f719ad9a3a9c621a141b3bc8d7941e8baf5919bceea120e6ecf6314e939b87"
+        );
     }
 }