Testing works

pixi.toml

@@ -21,6 +21,7 @@ build = { cmd = [
     "-T",  # show tracebacks
     "--keep-going",  # do not stop on error
 ] }
+test = "test.sh"
 clean = "rm -rf _build/*"
 start = "jupyter lab"
 
@@ -33,6 +34,8 @@ matplotlib-base = ">=3.9"
 ipympl = ">=0.9"
 jupyterlab = ">=4.2"
 jupyterlab-myst = ">=2.4"
+pytest = ">=8.3.5,<9"
+nbval = ">=0.11.0,<0.12"
 
 [pypi-dependencies]
 sphinx = ">=8.0.2"

test.sh

@@ -0,0 +1,82 @@
+#!/bin/bash
+
+notebook_files=()
+
+convert_file() {
+    local file="$1"
+    # Convert to ipynb format, to be consumed by pytest nbval plugin.
+    jupytext --to ipynb $file
+    if [ $? -ne 0 ]; then
+        error_occurred=1
+        echo "Errors when converting $file"
+        # Exit early
+        exit 1
+    fi
+    notebook_file="${file%.md}.ipynb"
+    # Stash file in array to be cleaned up at the end.
+    notebook_files+=("${notebook_file}")
+    local status=$?
+}
+
+
+# If no arguments were provided, exit with error and show usage.
+if [ $# -eq 0 ]; then
+    echo "Usage: $0 [filepaths...] | --all" >&2
+    exit 1
+fi
+
+# Variable to track if any errors occur
+error_occurred=0
+
+# If --all is passed, locate eligible files and execute them all.
+if [ "$1" == "--all" ]; then
+    files=$(find "tutorials" -name "*.md" | grep -v .ipynb_checkpoints)
+    for file in $files; do
+        if [ -f "$file" ]; then
+	    # Extract the kernel information from the Jupytext Markdown file
+	    kernel_info=$(grep -A 10 '^---$' "$file" | grep -E 'kernelspec')
+            # Skip if no kernel information was found
+            if [ -z "$kernel_info" ]; then
+		continue
+            fi
+            convert_file "$file"
+	    if [ $? -ne 0 ]; then
+                error_occurred=1
+            fi
+        else
+            echo "File not found: $file" >&2
+        fi
+    done
+else
+    # If filepaths are passed, execute them.
+    for file in "$@"; do
+        if [ -f "$file" ]; then
+            convert_file "$file"
+	    if [ $? -ne 0 ]; then
+                error_occurred=1
+            fi
+        else
+            echo "File not found: $file" >&2
+	    # Exit early
+	    exit 1
+        fi
+    done
+fi
+
+pytest --nbval
+
+# Clean up ipynb files that were converted.  Any stray ipynb files that were
+# _not_ the result of conversion from Markdown will be left alone.
+for file in "${notebook_files[@]}"; do
+    rm -v "$file"
+done
+
+if [ $error_occurred -ne 0 ]; then
+    echo "Some files executed with unexpected errors." >&2
+    exit 1
+else
+    echo "All files executed successfully." >&2
+    exit 0
+fi
+
+