From fcf6e38f68c22c1f1bbdb5f0f900d46d202d85a1 Mon Sep 17 00:00:00 2001
From: Tor Andersson <tor@ccxvii.net>
Date: Tue, 29 Apr 2025 12:22:38 +0200
Subject: Add jsfuzz to npm dev-dependencies.

---
 .gitignore            |  1 +
 docs/module/fuzzer.md | 19 +++++++++++++++----
 package.json          |  3 ++-
 tools/fuzz.js         |  6 ++++--
 4 files changed, 22 insertions(+), 7 deletions(-)

diff --git a/.gitignore b/.gitignore
index b2089b5..7f179fe 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,3 +16,4 @@ cookies.txt
 # Fuzzer output
 coverage
 fuzzer
+.nyc_output
diff --git a/docs/module/fuzzer.md b/docs/module/fuzzer.md
index d576693..3b05e70 100644
--- a/docs/module/fuzzer.md
+++ b/docs/module/fuzzer.md
@@ -17,17 +17,28 @@ Crash dumps are written to the "fuzzer" directory.
 
 There are two fuzzers available:
 
-A fuzzer that uses the "jsfuzz" package.
+A simple fuzzer that plays completely randomly:
+
+	rtt fuzz-rand TITLE
+
+A more advanced fuzzer that uses the "jsfuzz" package.
 With this fuzzer every title gets its own "fuzzer/corpus-title" sub-directory.
 The corpus helps the fuzzer find interesting game states in future runs.
 
 	rtt fuzz TITLE
 
-A simple fuzzer that plays completely randomly:
+The fuzzer will run until you stop it or it has found too many errors.
 
-	rtt fuzz-rand TITLE
+## Coverage
 
-The fuzzer will run until you stop it or it has found too many errors.
+Jsfuzz will generate a "nyc" coverage report that you can look at,
+to see how much of your code has been tested:
+
+	npx nyc coverage
+
+Or to generate an HTML report in "coverage":
+
+	npx nyc report --reporter=html
 
 ## Debug
 
diff --git a/package.json b/package.json
index a6282ba..48b84f6 100644
--- a/package.json
+++ b/package.json
@@ -15,6 +15,7 @@
 		"ws": "^8.18.1"
 	},
 	"devDependencies": {
-		"eslint": "^9.25.1"
+		"eslint": "^9.25.1",
+		"jsfuzz": "^1.0.15"
 	}
 }
diff --git a/tools/fuzz.js b/tools/fuzz.js
index e9863cb..c82db74 100644
--- a/tools/fuzz.js
+++ b/tools/fuzz.js
@@ -99,8 +99,9 @@ function list_actions(R, V) {
 	if (V.actions) {
 		for (var act in V.actions) {
 			var arg = V.actions[act]
-			if (act === "undo") {
+			if (act === "undo" || act === "ping") {
 				// never undo
+				// never ping
 			} else if (arg === 0 || arg === false) {
 				// disabled button
 			} else if (arg === 1 || arg === true) {
@@ -235,7 +236,8 @@ function log_crash(message, ctx, action) {
 
 	var dump = `fuzzer/${TITLE}-${hash}.json`
 	fs.writeFileSync(dump, json)
-	console.log("\trtt import", dump)
+	console.log("rtt import", dump)
+	console.log("")
 
 	if (++errors >= MAX_ERRORS)
 		throw new Error("too many errors")
-- 
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