update go-test module

core/coreunix/metadata_test.go

@@ -2,7 +2,6 @@ package coreunix
 
 import (
 	"bytes"
-	"context"
 	"io"
 	"testing"
 
@@ -31,11 +30,11 @@ func getDagserv(t *testing.T) ipld.DAGService {
 }
 
 func TestMetadata(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	// Make some random node
 	ds := getDagserv(t)
 	data := make([]byte, 1000)
-	_, err := io.ReadFull(random.NewRand(), data)
+	_, err := io.ReadFull(random.New(), data)
 	if err != nil {
 		t.Fatal(err)
 	}

docs/changelogs/v0.43.md

@@ -19,9 +19,10 @@ This release was brought to you by the [Shipyard](https://ipshipyard.com/) team.
   - [🔄 Sturdier DHT reprovides on large nodes](#-sturdier-dht-reprovides-on-large-nodes)
   - [📡 Future-proofing `webrtc-direct` with v2 support](#-future-proofing-webrtc-direct-with-v2-support)
   - [🗺️ Fewer stale addresses in the peerstore](#-fewer-stale-addresses-in-the-peerstore)
-  - [🏁 `ipfs routing findprovs` no longer crashes the daemon](#-ipfs-routing-findprovs-no-longer-crashes-the-daemon)
   - [🛡️ Memory exhaustion fix for pubsub](#-memory-exhaustion-fix-for-pubsub)
+  - [🏁 `ipfs routing findprovs` no longer crashes the daemon](#-ipfs-routing-findprovs-no-longer-crashes-the-daemon)
   - [📊 Telemetry is now opt-in](#-telemetry-is-now-opt-in)
+  - [🧪 Tests use new go-test and rand v2](#-tests-use-new-go-test-and-rand-v2)
   - [📦️ Dependency updates](#-dependency-updates)
 - [📝 Changelog](#-changelog)
 - [👨‍👩‍👧‍👦 Contributors](#-contributors)
@@ -129,6 +130,14 @@ This flaw is already public, which is why we name it here. libp2p disclosed it a
 
 The telemetry plugin is now opt-in and ships with no built-in endpoint: a node sends nothing until you set `Plugins.Plugins.telemetry.Config.Mode` to `on` and `Endpoint` to a collector you run, documented along with the payload schema in [telemetry.md](https://github.com/ipfs/kubo/blob/master/docs/telemetry.md).
 
+#### 🧪 Tests use new go-test and rand v2
+
+The new `go-test` is upgraded to use `math/rand/v2` in all of its packages. The `/go-test/random` package now allows reuse of the random number generator for more efficiently generating sets of random values.
+
+Additionally, the `/go-test/random` package removes support for a global seed for the random number generator. This led to the possibility of multiple tests setting the global seed to generate deterministic values, and breaking other tests by causing the generator to generate unexpected values. This breakage could be intermittent and difficult to debug, depending on the how/which tests ran at the same time.
+
+Since the underlying pseudo-random number generator was changed in the go-test module, the data generated for a given seed also changed. This required updating tests that relied on seeding the generator and getting expected values.
+
 #### 📦️ Dependency updates
 
 - update `go-libp2p` to a pre-release pinned at [95be6665](https://github.com/libp2p/go-libp2p/commit/95be6665b014e3e29bdb639ec10f8944d141969d), ahead of v0.48.0 (no tagged release yet)

docs/examples/kubo-as-a-library/go.mod

@@ -7,7 +7,7 @@ go 1.26.4
 replace github.com/ipfs/kubo => ./../../..
 
 require (
-	github.com/ipfs/boxo v0.41.1-0.20260707130650-177b35c8ef09
+	github.com/ipfs/boxo v0.41.1-0.20260709160645-8e07a7b71383
 	github.com/ipfs/kubo v0.0.0-00010101000000-000000000000
 	github.com/libp2p/go-libp2p v0.48.1-0.20260708062241-95be6665b014
 	github.com/multiformats/go-multiaddr v0.16.1
@@ -99,7 +99,7 @@ require (
 	github.com/ipfs/go-log/v2 v2.9.2 // indirect
 	github.com/ipfs/go-metrics-interface v0.3.0 // indirect
 	github.com/ipfs/go-peertaskqueue v0.8.3 // indirect
-	github.com/ipfs/go-test v0.3.0 // indirect
+	github.com/ipfs/go-test v0.3.1-0.20260713090104-29b7f73d680f // indirect
 	github.com/ipfs/go-unixfsnode v1.10.5 // indirect
 	github.com/ipld/go-car/v2 v2.17.0 // indirect
 	github.com/ipld/go-codec-dagpb v1.7.0 // indirect

docs/examples/kubo-as-a-library/go.sum

@@ -273,8 +273,8 @@ github.com/ipfs-shipyard/nopfs/ipfs v0.25.0 h1:OqNqsGZPX8zh3eFMO8Lf8EHRRnSGBMqcd
 github.com/ipfs-shipyard/nopfs/ipfs v0.25.0/go.mod h1:BxhUdtBgOXg1B+gAPEplkg/GpyTZY+kCMSfsJvvydqU=
 github.com/ipfs/bbloom v0.1.0 h1:nIWwfIE3AaG7RCDQIsrUonGCOTp7qSXzxH7ab/ss964=
 github.com/ipfs/bbloom v0.1.0/go.mod h1:lDy3A3i6ndgEW2z1CaRFvDi5/ZTzgM1IxA/pkL7Wgts=
-github.com/ipfs/boxo v0.41.1-0.20260707130650-177b35c8ef09 h1:jl4/IHR4IRb0QOVw6vFxUL4NRnetk1V42HIdipWu+aw=
-github.com/ipfs/boxo v0.41.1-0.20260707130650-177b35c8ef09/go.mod h1:mnR769LN1W7rDI6z1GBLmD15x4pvMdW0oWxik8j3y6g=
+github.com/ipfs/boxo v0.41.1-0.20260709160645-8e07a7b71383 h1:O1uyZPhj+QV6fqskinay6TjKDyMRg5mofRlIM+JzhMw=
+github.com/ipfs/boxo v0.41.1-0.20260709160645-8e07a7b71383/go.mod h1:tXD9KBRsNLhH4YL6eVcygi4RdSjga4fAw444O+C59aI=
 github.com/ipfs/go-bitfield v1.1.0 h1:fh7FIo8bSwaJEh6DdTWbCeZ1eqOaOkKFI74SCnsWbGA=
 github.com/ipfs/go-bitfield v1.1.0/go.mod h1:paqf1wjq/D2BBmzfTVFlJQ9IlFOZpg422HL0HqsGWHU=
 github.com/ipfs/go-block-format v0.0.3/go.mod h1:4LmD4ZUw0mhO+JSKdpWwrzATiEfM7WWgQ8H5l6P8MVk=
@@ -339,8 +339,8 @@ github.com/ipfs/go-metrics-interface v0.3.0 h1:YwG7/Cy4R94mYDUuwsBfeziJCVm9pBMJ6
 github.com/ipfs/go-metrics-interface v0.3.0/go.mod h1:OxxQjZDGocXVdyTPocns6cOLwHieqej/jos7H4POwoY=
 github.com/ipfs/go-peertaskqueue v0.8.3 h1:tBPpGJy+A92RqtRFq5amJn0Uuj8Pw8tXi0X3eHfHM8w=
 github.com/ipfs/go-peertaskqueue v0.8.3/go.mod h1:OqVync4kPOcXEGdj/LKvox9DCB5mkSBeXsPczCxLtYA=
-github.com/ipfs/go-test v0.3.0 h1:0Y4Uve3tp9HI+2lIJjfOliOrOgv/YpXg/l1y3P4DEYE=
-github.com/ipfs/go-test v0.3.0/go.mod h1:JK+U8pRpATZb7lsYNSJlCj3WYB3cFfWIbI6nWRM/GFk=
+github.com/ipfs/go-test v0.3.1-0.20260713090104-29b7f73d680f h1:+XCRw77Ql6njoPz4vueYWCT4xOpeKzG40wfoV8L8MIU=
+github.com/ipfs/go-test v0.3.1-0.20260713090104-29b7f73d680f/go.mod h1:JK+U8pRpATZb7lsYNSJlCj3WYB3cFfWIbI6nWRM/GFk=
 github.com/ipfs/go-unixfsnode v1.10.5 h1:V34JV7fM90y+2ZUef7ToShjmwAZ8oo1yP7zrpWzC5L4=
 github.com/ipfs/go-unixfsnode v1.10.5/go.mod h1:u/9Ukl+XYpfKTMu+NXQqxbzAJVTwSCoyTYBGgE+JdSE=
 github.com/ipld/go-car/v2 v2.17.0 h1:zgjSxf/lQNYcQPX08cvb5rSdEY8sv5OOnQIsZhZMPx4=

fuse/readonly/ipfs_test.go

@@ -57,7 +57,7 @@ func testMount(t *testing.T, root fs.InodeEmbedder) string {
 
 func randObj(t *testing.T, nd *core.IpfsNode, size int64) (ipld.Node, []byte) {
 	buf := make([]byte, size)
-	_, err := io.ReadFull(random.NewRand(), buf)
+	_, err := io.ReadFull(random.New(), buf)
 	if err != nil {
 		t.Fatal(err)
 	}

go.mod

@@ -22,7 +22,7 @@ require (
 	github.com/hashicorp/go-version v1.9.0
 	github.com/ipfs-shipyard/nopfs v0.0.14
 	github.com/ipfs-shipyard/nopfs/ipfs v0.25.0
-	github.com/ipfs/boxo v0.41.1-0.20260707130650-177b35c8ef09
+	github.com/ipfs/boxo v0.41.1-0.20260709160645-8e07a7b71383
 	github.com/ipfs/go-block-format v0.2.4
 	github.com/ipfs/go-cid v0.6.2
 	github.com/ipfs/go-cidutil v0.1.2
@@ -42,7 +42,7 @@ require (
 	github.com/ipfs/go-log/v2 v2.9.2
 	github.com/ipfs/go-metrics-interface v0.3.0
 	github.com/ipfs/go-metrics-prometheus v0.1.0
-	github.com/ipfs/go-test v0.3.0
+	github.com/ipfs/go-test v0.3.1-0.20260713090104-29b7f73d680f
 	github.com/ipfs/go-unixfsnode v1.10.5
 	github.com/ipld/go-car/v2 v2.17.0
 	github.com/ipld/go-codec-dagpb v1.7.0

go.sum

@@ -344,8 +344,8 @@ github.com/ipfs-shipyard/nopfs/ipfs v0.25.0 h1:OqNqsGZPX8zh3eFMO8Lf8EHRRnSGBMqcd
 github.com/ipfs-shipyard/nopfs/ipfs v0.25.0/go.mod h1:BxhUdtBgOXg1B+gAPEplkg/GpyTZY+kCMSfsJvvydqU=
 github.com/ipfs/bbloom v0.1.0 h1:nIWwfIE3AaG7RCDQIsrUonGCOTp7qSXzxH7ab/ss964=
 github.com/ipfs/bbloom v0.1.0/go.mod h1:lDy3A3i6ndgEW2z1CaRFvDi5/ZTzgM1IxA/pkL7Wgts=
-github.com/ipfs/boxo v0.41.1-0.20260707130650-177b35c8ef09 h1:jl4/IHR4IRb0QOVw6vFxUL4NRnetk1V42HIdipWu+aw=
-github.com/ipfs/boxo v0.41.1-0.20260707130650-177b35c8ef09/go.mod h1:mnR769LN1W7rDI6z1GBLmD15x4pvMdW0oWxik8j3y6g=
+github.com/ipfs/boxo v0.41.1-0.20260709160645-8e07a7b71383 h1:O1uyZPhj+QV6fqskinay6TjKDyMRg5mofRlIM+JzhMw=
+github.com/ipfs/boxo v0.41.1-0.20260709160645-8e07a7b71383/go.mod h1:tXD9KBRsNLhH4YL6eVcygi4RdSjga4fAw444O+C59aI=
 github.com/ipfs/go-bitfield v1.1.0 h1:fh7FIo8bSwaJEh6DdTWbCeZ1eqOaOkKFI74SCnsWbGA=
 github.com/ipfs/go-bitfield v1.1.0/go.mod h1:paqf1wjq/D2BBmzfTVFlJQ9IlFOZpg422HL0HqsGWHU=
 github.com/ipfs/go-block-format v0.0.3/go.mod h1:4LmD4ZUw0mhO+JSKdpWwrzATiEfM7WWgQ8H5l6P8MVk=
@@ -412,8 +412,8 @@ github.com/ipfs/go-metrics-prometheus v0.1.0 h1:bApWOHkrH3VTBHzTHrZSfq4n4weOZDzZ
 github.com/ipfs/go-metrics-prometheus v0.1.0/go.mod h1:2GtL525C/4yxtvSXpRJ4dnE45mCX9AS0XRa03vHx7G0=
 github.com/ipfs/go-peertaskqueue v0.8.3 h1:tBPpGJy+A92RqtRFq5amJn0Uuj8Pw8tXi0X3eHfHM8w=
 github.com/ipfs/go-peertaskqueue v0.8.3/go.mod h1:OqVync4kPOcXEGdj/LKvox9DCB5mkSBeXsPczCxLtYA=
-github.com/ipfs/go-test v0.3.0 h1:0Y4Uve3tp9HI+2lIJjfOliOrOgv/YpXg/l1y3P4DEYE=
-github.com/ipfs/go-test v0.3.0/go.mod h1:JK+U8pRpATZb7lsYNSJlCj3WYB3cFfWIbI6nWRM/GFk=
+github.com/ipfs/go-test v0.3.1-0.20260713090104-29b7f73d680f h1:+XCRw77Ql6njoPz4vueYWCT4xOpeKzG40wfoV8L8MIU=
+github.com/ipfs/go-test v0.3.1-0.20260713090104-29b7f73d680f/go.mod h1:JK+U8pRpATZb7lsYNSJlCj3WYB3cFfWIbI6nWRM/GFk=
 github.com/ipfs/go-unixfsnode v1.10.5 h1:V34JV7fM90y+2ZUef7ToShjmwAZ8oo1yP7zrpWzC5L4=
 github.com/ipfs/go-unixfsnode v1.10.5/go.mod h1:u/9Ukl+XYpfKTMu+NXQqxbzAJVTwSCoyTYBGgE+JdSE=
 github.com/ipld/go-car/v2 v2.17.0 h1:zgjSxf/lQNYcQPX08cvb5rSdEY8sv5OOnQIsZhZMPx4=

test/bench/bench_cli_ipfs_add/main.go

@@ -42,6 +42,8 @@ func compareResults() error {
 
 func benchmarkAdd(amount int64) (*testing.BenchmarkResult, error) {
 	var benchmarkError error
+	seed := random.Uint64ToSeed(1)
+
 	results := testing.Benchmark(func(b *testing.B) {
 		b.SetBytes(amount)
 		for i := 0; i < b.N; i++ {
@@ -67,7 +69,6 @@ func benchmarkAdd(amount int64) (*testing.BenchmarkResult, error) {
 				b.Fatal(err)
 			}
 
-			const seed = 1
 			f, err := os.CreateTemp("", "")
 			if err != nil {
 				benchmarkError = err
@@ -76,7 +77,7 @@ func benchmarkAdd(amount int64) (*testing.BenchmarkResult, error) {
 			defer os.Remove(f.Name())
 
 			randReader := &io.LimitedReader{
-				R: random.NewSeededRand(seed),
+				R: random.NewSeeded(seed),
 				N: amount,
 			}
 			if _, err := io.Copy(f, randReader); err != nil {

test/bench/offline_add/main.go

@@ -34,6 +34,7 @@ func compareResults() error {
 }
 
 func benchmarkAdd(amount int64) (*testing.BenchmarkResult, error) {
+	seed := random.Uint64ToSeed(1)
 	results := testing.Benchmark(func(b *testing.B) {
 		b.SetBytes(amount)
 		for i := 0; i < b.N; i++ {
@@ -51,15 +52,14 @@ func benchmarkAdd(amount int64) (*testing.BenchmarkResult, error) {
 				b.Fatal(err)
 			}
 
-			const seed = 1
 			f, err := os.CreateTemp("", "")
 			if err != nil {
 				b.Fatal(err)
 			}
 			defer os.Remove(f.Name())
 
 			randReader := &io.LimitedReader{
-				R: random.NewSeededRand(seed),
+				R: random.NewSeeded(seed),
 				N: amount,
 			}
 			_, err = io.Copy(f, randReader)

test/cli/pins_test.go

@@ -223,8 +223,9 @@ func TestPins(t *testing.T) {
 		t.Parallel()
 
 		node := harness.NewT(t).NewNode().Init()
-		cidAStr := node.IPFSAddStr(string(random.Bytes(1000)), "--pin=false")
-		cidBStr := node.IPFSAddStr(string(random.Bytes(1000)), "--pin=false")
+		rnd := random.New()
+		cidAStr := node.IPFSAddStr(string(rnd.Bytes(1000)), "--pin=false")
+		cidBStr := node.IPFSAddStr(string(rnd.Bytes(1000)), "--pin=false")
 
 		_ = node.IPFS("pin", "add", "--name", "testPin", cidAStr)
 
@@ -251,9 +252,10 @@ func TestPins(t *testing.T) {
 		t.Parallel()
 
 		node := harness.NewT(t).NewNode().Init()
-		cidAStr := node.IPFSAddStr(string(random.Bytes(1000)), "--pin=false")
-		cidBStr := node.IPFSAddStr(string(random.Bytes(1000)), "--pin=false")
-		cidCStr := node.IPFSAddStr(string(random.Bytes(1000)), "--pin=false")
+		rnd := random.New()
+		cidAStr := node.IPFSAddStr(string(rnd.Bytes(1000)), "--pin=false")
+		cidBStr := node.IPFSAddStr(string(rnd.Bytes(1000)), "--pin=false")
+		cidCStr := node.IPFSAddStr(string(rnd.Bytes(1000)), "--pin=false")
 
 		outA := cidAStr + " recursive testPin"
 		outB := cidBStr + " recursive testPin"
@@ -289,7 +291,8 @@ func TestPins(t *testing.T) {
 		t.Parallel()
 
 		node := harness.NewT(t).NewNode().Init()
-		cidStr := node.IPFSAddStr(string(random.Bytes(1000)), "--pin=false")
+		rnd := random.New()
+		cidStr := node.IPFSAddStr(string(rnd.Bytes(1000)), "--pin=false")
 
 		outBefore := cidStr + " recursive A"
 		outAfter := cidStr + " recursive B"
@@ -310,8 +313,9 @@ func TestPins(t *testing.T) {
 		t.Parallel()
 
 		node := harness.NewT(t).NewNode().Init()
-		cidAStr := node.IPFSAddStr(string(random.Bytes(1000)), "--pin=false")
-		cidBStr := node.IPFSAddStr(string(random.Bytes(1000)), "--pin=false")
+		rnd := random.New()
+		cidAStr := node.IPFSAddStr(string(rnd.Bytes(1000)), "--pin=false")
+		cidBStr := node.IPFSAddStr(string(rnd.Bytes(1000)), "--pin=false")
 
 		_ = node.IPFS("pin", "add", "--name", "testPinJson", cidAStr)
 

test/dependencies/go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/golangci/golangci-lint v1.64.8
 	github.com/ipfs/go-cidutil v0.1.2
 	github.com/ipfs/go-log/v2 v2.9.2
-	github.com/ipfs/go-test v0.3.0
+	github.com/ipfs/go-test v0.3.1-0.20260713090104-29b7f73d680f
 	github.com/ipfs/hang-fds v0.1.0
 	github.com/ipfs/iptb v1.4.1
 	github.com/ipfs/iptb-plugins v0.5.1
@@ -137,7 +137,7 @@ require (
 	github.com/huin/goupnp v1.3.0 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/ipfs/bbloom v0.1.0 // indirect
-	github.com/ipfs/boxo v0.41.1-0.20260707130650-177b35c8ef09 // indirect
+	github.com/ipfs/boxo v0.41.1-0.20260709160645-8e07a7b71383 // indirect
 	github.com/ipfs/go-bitfield v1.1.0 // indirect
 	github.com/ipfs/go-block-format v0.2.4 // indirect
 	github.com/ipfs/go-cid v0.6.2 // indirect

test/dependencies/go.sum

@@ -301,8 +301,8 @@ github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
 github.com/ipfs/bbloom v0.1.0 h1:nIWwfIE3AaG7RCDQIsrUonGCOTp7qSXzxH7ab/ss964=
 github.com/ipfs/bbloom v0.1.0/go.mod h1:lDy3A3i6ndgEW2z1CaRFvDi5/ZTzgM1IxA/pkL7Wgts=
-github.com/ipfs/boxo v0.41.1-0.20260707130650-177b35c8ef09 h1:jl4/IHR4IRb0QOVw6vFxUL4NRnetk1V42HIdipWu+aw=
-github.com/ipfs/boxo v0.41.1-0.20260707130650-177b35c8ef09/go.mod h1:mnR769LN1W7rDI6z1GBLmD15x4pvMdW0oWxik8j3y6g=
+github.com/ipfs/boxo v0.41.1-0.20260709160645-8e07a7b71383 h1:O1uyZPhj+QV6fqskinay6TjKDyMRg5mofRlIM+JzhMw=
+github.com/ipfs/boxo v0.41.1-0.20260709160645-8e07a7b71383/go.mod h1:tXD9KBRsNLhH4YL6eVcygi4RdSjga4fAw444O+C59aI=
 github.com/ipfs/go-bitfield v1.1.0 h1:fh7FIo8bSwaJEh6DdTWbCeZ1eqOaOkKFI74SCnsWbGA=
 github.com/ipfs/go-bitfield v1.1.0/go.mod h1:paqf1wjq/D2BBmzfTVFlJQ9IlFOZpg422HL0HqsGWHU=
 github.com/ipfs/go-block-format v0.2.4 h1:pgsT9i8zB4YQkBIQRrBwqbQiXPogRCiQnfxd2bC4koI=
@@ -339,8 +339,8 @@ github.com/ipfs/go-metrics-interface v0.3.0 h1:YwG7/Cy4R94mYDUuwsBfeziJCVm9pBMJ6
 github.com/ipfs/go-metrics-interface v0.3.0/go.mod h1:OxxQjZDGocXVdyTPocns6cOLwHieqej/jos7H4POwoY=
 github.com/ipfs/go-peertaskqueue v0.8.3 h1:tBPpGJy+A92RqtRFq5amJn0Uuj8Pw8tXi0X3eHfHM8w=
 github.com/ipfs/go-peertaskqueue v0.8.3/go.mod h1:OqVync4kPOcXEGdj/LKvox9DCB5mkSBeXsPczCxLtYA=
-github.com/ipfs/go-test v0.3.0 h1:0Y4Uve3tp9HI+2lIJjfOliOrOgv/YpXg/l1y3P4DEYE=
-github.com/ipfs/go-test v0.3.0/go.mod h1:JK+U8pRpATZb7lsYNSJlCj3WYB3cFfWIbI6nWRM/GFk=
+github.com/ipfs/go-test v0.3.1-0.20260713090104-29b7f73d680f h1:+XCRw77Ql6njoPz4vueYWCT4xOpeKzG40wfoV8L8MIU=
+github.com/ipfs/go-test v0.3.1-0.20260713090104-29b7f73d680f/go.mod h1:JK+U8pRpATZb7lsYNSJlCj3WYB3cFfWIbI6nWRM/GFk=
 github.com/ipfs/go-unixfsnode v1.10.5 h1:V34JV7fM90y+2ZUef7ToShjmwAZ8oo1yP7zrpWzC5L4=
 github.com/ipfs/go-unixfsnode v1.10.5/go.mod h1:u/9Ukl+XYpfKTMu+NXQqxbzAJVTwSCoyTYBGgE+JdSE=
 github.com/ipfs/hang-fds v0.1.0 h1:deBiFlWHsVGzJ0ZMaqscEqRM1r2O1rFZ59UiQXb1Xko=

test/integration/addcat_test.go

@@ -28,6 +28,12 @@ var log = logging.Logger("epictest")
 
 const kSeed = 1
 
+var randSeed [32]byte
+
+func init() {
+	randSeed = random.Uint64ToSeed(kSeed)
+}
+
 func Test1KBInstantaneous(t *testing.T) {
 	conf := testutil.LatencyConfig{
 		NetworkLatency:    0,
@@ -84,8 +90,7 @@ func AddCatPowers(conf testutil.LatencyConfig, megabytesMax int64) error {
 }
 
 func RandomBytes(n int64) []byte {
-	random.SetSeed(kSeed)
-	return random.Bytes(int(n))
+	return random.NewSeeded(randSeed).Bytes(n)
 }
 
 func DirectAddCat(data []byte, conf testutil.LatencyConfig) error {

test/sharness/t0040-add-and-cat.sh

@@ -489,7 +489,7 @@ test_add_cat_5MB() {
   '
 
   test_expect_success "sha1 of the file looks ok" '
-    echo "11145b8c4bc8f87ea2fcfc3d55708b8cac2aadf12862" >sha1_expected &&
+    echo "11141d13cfb2c207591376e06bc2360741c2009b2898" >sha1_expected &&
     multihash -a=sha1 -e=hex mountdir/bigfile >sha1_actual &&
     test_cmp sha1_expected sha1_actual
   '
@@ -599,7 +599,7 @@ test_add_cat_expensive() {
   '
 
   test_expect_success EXPENSIVE "sha1 of the file looks ok" '
-    echo "11141e8c04d7cd019cc0acf0311a8ca6cf2c18413c96" >sha1_expected &&
+    echo "1114acba57d18295a18b428faf88960fa47a71eb22cc" >sha1_expected &&
     multihash -a=sha1 -e=hex mountdir/bigfile >sha1_actual &&
     test_cmp sha1_expected sha1_actual
   '
@@ -623,16 +623,16 @@ test_add_cat_expensive() {
   '
 
   test_expect_success EXPENSIVE "ipfs cat output hashed looks good" '
-    echo "11141e8c04d7cd019cc0acf0311a8ca6cf2c18413c96" >sha1_expected &&
+    echo "1114acba57d18295a18b428faf88960fa47a71eb22cc" >sha1_expected &&
     test_cmp sha1_expected sha1_actual
   '
 
   test_expect_success FUSE,EXPENSIVE "cat ipfs/bigfile succeeds" '
-    cat "ipfs/$HASH" | multihash -a=sha1 -e=hex >sha1_actual
+    cat "ipfs/$HASH" | multihash -a=sha1 -e=hex >sha1_actual-Y
   '
 
   test_expect_success FUSE,EXPENSIVE "cat ipfs/bigfile looks good" '
-    test_cmp sha1_expected sha1_actual
+    test_cmp sha1_expected sha1_actual-Y
   '
 }
 
@@ -906,38 +906,38 @@ test_expect_success "random-data is installed" '
   type random-data
 '
 
-test_add_cat_5MB "" "QmapAfmzmeWYTNztMQEhUXFcSGrsax22WRG7YN9xLdMeQq"
+test_add_cat_5MB "" "QmbW8FAUE5nJ2EccaFGLQtubacZr9VP1m6KLBniL7yzXpF"
 
-test_add_cat_5MB --raw-leaves "QmabWSFaPusmiZaaVZLhEUtHcj8CCvVeUfkBpKqAkKVMiS"
+test_add_cat_5MB --raw-leaves "Qmf6a54RFHB3sAH5Beh5pha6Y8UZz22pfDKZAgmQ2UvLJH"
 
 # note: the specified hash implies that internal nodes are stored
 # using CidV1 and leaves are stored using raw blocks
-test_add_cat_5MB --cid-version=1 "bafybeifwdkm32fmukqwh3jofm6ma76bcqvn6opxstsnzmya7utboi4cb2m"
+test_add_cat_5MB --cid-version=1 "bafybeihy7ngsovmm2dqanlpjeddvs7kshb4bdwrue3pe5nsf6rkn3hg45y"
 
 # note: the specified hash implies that internal nodes are stored
 # using CidV1 and leaves are stored using CidV1 but using the legacy
 # format (i.e. not raw)
-test_add_cat_5MB '--cid-version=1 --raw-leaves=false' "bafybeifq4unep5w4agr3nlynxidj2rymf6dzu6bf4ieqqildkboe5mdmne"
+test_add_cat_5MB '--cid-version=1 --raw-leaves=false' "bafybeie4nox52gy5qpv5bhbrzrfgpwwdfpk257v2ixy66whvqdjd67r3fq"
 
 # note: --hash=blake2b-256 implies --cid-version=1 which implies --raw-leaves=true
 # the specified hash represents the leaf nodes stored as raw leaves and
 # encoded with the blake2b-256 hash function
-test_add_cat_5MB '--hash=blake2b-256' "bafykbzacebxcnlql4oc3mtscqn32aumqkqxxv3wt7dkyrphgh6lc2gckiq6bw"
+test_add_cat_5MB '--hash=blake2b-256' "bafykbzacebiss6bbf5ynrrcsweg66zau5p6w2a52scmpgcxaaeqremw5vpy22"
 
 # the specified hash represents the leaf nodes stored as protoful nodes and
 # encoded with the blake2b-256 hash function
-test_add_cat_5MB '--hash=blake2b-256 --raw-leaves=false' "bafykbzacearibnoamkfmcagpfgk2sbgx65qftnsrh4ttd3g7ghooasfnyavme"
+test_add_cat_5MB '--hash=blake2b-256 --raw-leaves=false' "bafykbzacecn3yylzcrinh2mf3kcwxrql4haddl6pb4wmnkc6wurtfqi2mghhy"
 
-test_add_cat_expensive "" "Qma1WZKC3jad7e3F7GEDvkFdhPLyMEhKszBF4nBUCBGh6c"
+test_add_cat_expensive "" "QmPYo95xiEmcqiqWpqg9iwHgcbWi7n4fQuP27xCNQLmytG"
 
 # note: the specified hash implies that internal nodes are stored
 # using CidV1 and leaves are stored using raw blocks
-test_add_cat_expensive "--cid-version=1" "bafybeibdfw7nsmb3erhej2k6v4eopaswsf5yfv2ikweqa3qsc5no4jywqu"
+test_add_cat_expensive "--cid-version=1" "bafybeidwwhjvrpu2j34ppvr2swm2u55ljcuhqzm7s5xd7rlsvlu7ny2rry"
 
 # note: --hash=blake2b-256 implies --cid-version=1 which implies --raw-leaves=true
 # the specified hash represents the leaf nodes stored as raw leaves and
 # encoded with the blake2b-256 hash function
-test_add_cat_expensive '--hash=blake2b-256' "bafykbzaceduy3thhmcf6ptfqzxberlvj7sgo4uokrvd6qwrhim6r3rgcb26qi"
+test_add_cat_expensive '--hash=blake2b-256' "bafykbzacebosow2qjoynvjq2qmjuhh6qgkxqwjpqqreucu5idbq3n75wobtxa"
 
 test_add_named_pipe