Update format and verify scripts to check scaffold, solution and test files

bin/format_exercises.sh

@@ -9,6 +9,9 @@ repo=$(git rev-parse --show-toplevel)
 # directory and format Cairo files
 exercises="$repo/exercises/*/*"
 
+# Capture all arguments passed to the script to pass them to scarb fmt
+SCARB_FMT_ARGS=("$@")
+
 for exercise_dir in $exercises; do
     cd "$exercise_dir"
 
@@ -19,6 +22,16 @@ for exercise_dir in $exercises; do
         continue
     fi
 
+    if [ -f "./src/lib.cairo" ]; then
+        scaffold_solution="./src/lib.cairo"
+    else
+        echo "Could not locate scaffold implementation for $exercise"
+        exit 1
+    fi
+
+    # check scaffold solution formatting
+    scarb fmt "${SCARB_FMT_ARGS[@]}"
+
     # scarb fmt cannot currently format individual files, so we have to
     # temporarily move the solution files into the Cairo package, where
     # 'scarb fmt' can format it as well
@@ -34,13 +47,17 @@ for exercise_dir in $exercises; do
         exit 1
     fi
 
-    # move the solution file into the package
-    cp "$solution_file" "$tmp_file"
+    # backup scaffold solution
+    cp "$scaffold_solution" "$tmp_file"
+
+    # copy the example solution file into the package
+    cp "$solution_file" "$scaffold_solution"
 
-    scarb fmt "$@"
+    # check example solution formatting
+    scarb fmt "${SCARB_FMT_ARGS[@]}"
 
-    # move the solution file back
-    cp "$tmp_file" "$solution_file"
+    # copy the scaffold solution back
+    cp "$tmp_file" "$scaffold_solution"
 
     rm "$tmp_file"
 done

bin/verify-exercises

@@ -67,9 +67,10 @@ for exercise_path in $exercises; do
 
     cd "$tmp_dir"
 
-    scarb build
+    # test that the scaffold + tests combination compiles
+    scarb build --test
 
-    # Move example files to where Cargo expects them
+    # Copy solution files to where Cargo expects them
     if [ -f "$repo/$exercise_path/.meta/example.cairo" ]; then
         cp -f "$repo/$exercise_path/.meta/example.cairo" "$tmp_dir/src/lib.cairo"
     elif [ -f "$repo/$exercise_path/.meta/exemplar.cairo" ]; then

exercises/practice/resistor-color/src/lib.cairo

@@ -1,4 +1,4 @@
-#[derive(Debug, Drop)]
+#[derive(Drop, Debug, PartialEq)]
 pub enum Color {
     Black,
     Brown,