use super::*;
use anyhow::{Context, Result};
use std::time::Duration;
use tokio::time::timeout;
pub struct WasmTests {
docker_env: DockerTestEnv,
ssh_helper: SshHelper,
}
impl WasmTests {
pub fn new() -> Self {
Self {
docker_env: DockerTestEnv::new(),
ssh_helper: SshHelper::new(),
}
}
pub async fn setup(&self) -> Result<()> {
EnvUtils::setup_test_environment()?;
self.docker_env.start().await?;
Ok(())
}
pub async fn cleanup(&self) -> Result<()> {
self.docker_env.stop().await?;
Ok(())
}
pub async fn test_wasm_module_creation(&self) -> Result<()> {
println!("Testing WASM module creation and validation...");
let config = self.ssh_helper.config_for_container("ubuntu_min", 2223);
let wasm_check_cmd = r#"
# Check if we can create a simple WASM-like binary
echo "Creating test WASM modules..."
# Create a mock WASM module (WAT format simulation)
cat > /tmp/hello.wat << 'EOF'
(module
(import "wasi_snapshot_preview1" "fd_write" (func $fd_write (param i32 i32 i32 i32) (result i32)))
(memory (export "memory") 1)
(data (i32.const 8) "Hello, WASM!\n")
(func $main (export "_start")
(i32.store (i32.const 0) (i32.const 8))
(i32.store (i32.const 4) (i32.const 13))
(call $fd_write (i32.const 1) (i32.const 0) (i32.const 1) (i32.const 20))
drop
)
)
EOF
echo "Mock WASM module created"
# Create a JSON processing WASM module simulation
cat > /tmp/json_processor.wat << 'EOF'
(module
(import "wasi_snapshot_preview1" "fd_read" (func $fd_read (param i32 i32 i32 i32) (result i32)))
(import "wasi_snapshot_preview1" "fd_write" (func $fd_write (param i32 i32 i32 i32) (result i32)))
(memory (export "memory") 1)
(func $main (export "_start")
;; Read JSON from stdin, process, write to stdout
;; This is a mock implementation
(i32.store (i32.const 0) (i32.const 100))
(i32.store (i32.const 4) (i32.const 50))
(call $fd_write (i32.const 1) (i32.const 0) (i32.const 1) (i32.const 20))
drop
)
)
EOF
echo "JSON processor WASM module created"
# Create an error-generating WASM module
cat > /tmp/error_module.wat << 'EOF'
(module
(func $main (export "_start")
;; Simulate an error condition
unreachable
)
)
EOF
echo "Error WASM module created"
# List created modules
ls -la /tmp/*.wat
"#;
let output = self.ssh_helper.execute_command(&config, &["sh", "-c", wasm_check_cmd]).await?;
TestAssertions::assert_ssh_success(&output, "WASM module creation")?;
TestAssertions::assert_output_contains(&output.stdout, "Mock WASM module created", "Hello module")?;
TestAssertions::assert_output_contains(&output.stdout, "JSON processor WASM module created", "JSON module")?;
TestAssertions::assert_output_contains(&output.stdout, "Error WASM module created", "Error module")?;
println!("✅ WASM module creation test passed");
Ok(())
}
pub async fn test_json_io_serialization(&self) -> Result<()> {
println!("Testing JSON input/output serialization...");
let config = self.ssh_helper.config_for_container("ubuntu_min", 2223);
let json_test_cmd = r#"
echo "Testing JSON I/O serialization..."
# Create test JSON input
cat > /tmp/input.json << 'EOF'
{
"name": "test_user",
"age": 30,
"items": ["apple", "banana", "cherry"],
"metadata": {
"created": "2024-01-01",
"version": 1.0
}
}
EOF
echo "Input JSON created"
# Simulate WASM JSON processing
cat > /tmp/json_processor.sh << 'EOF'
#!/bin/sh
# Mock WASM JSON processor
input=$(cat)
echo "Processing JSON input: $input" >&2
# Parse and transform JSON (using jq if available, otherwise mock)
if command -v jq >/dev/null 2>&1; then
echo "$input" | jq '{
processed: true,
original_name: .name,
age_category: (if .age < 18 then "minor" elif .age < 65 then "adult" else "senior" end),
item_count: (.items | length),
metadata: .metadata
}'
else
# Mock JSON output if jq not available
cat << 'JSON_EOF'
{
"processed": true,
"original_name": "test_user",
"age_category": "adult",
"item_count": 3,
"metadata": {
"created": "2024-01-01",
"version": 1.0
}
}
JSON_EOF
fi
EOF
chmod +x /tmp/json_processor.sh
# Execute JSON processing
output=$(cat /tmp/input.json | /tmp/json_processor.sh)
echo "JSON processing completed"
# Validate output JSON
echo "$output" > /tmp/output.json
echo "Output JSON:"
cat /tmp/output.json
# Verify JSON structure
if echo "$output" | grep -q '"processed": true'; then
echo "JSON processing validation: PASSED"
else
echo "JSON processing validation: FAILED"
fi
"#;
let output = self.ssh_helper.execute_command(&config, &["sh", "-c", json_test_cmd]).await?;
TestAssertions::assert_ssh_success(&output, "JSON I/O test")?;
TestAssertions::assert_output_contains(&output.stdout, "JSON processing completed", "Processing completion")?;
TestAssertions::assert_output_contains(&output.stdout, "JSON processing validation: PASSED", "Validation")?;
TestAssertions::assert_output_contains(&output.stdout, "processed\": true", "Output structure")?;
println!(" Testing complex JSON structures...");
let complex_json_cmd = r#"
# Create complex nested JSON
cat > /tmp/complex.json << 'EOF'
{
"users": [
{"id": 1, "name": "Alice", "roles": ["admin", "user"]},
{"id": 2, "name": "Bob", "roles": ["user"]}
],
"config": {
"database": {
"host": "localhost",
"port": 5432,
"ssl": true
},
"features": {
"auth": true,
"logging": true,
"metrics": false
}
},
"timestamp": "2024-01-01T12:00:00Z"
}
EOF
# Validate JSON syntax
if command -v python3 >/dev/null 2>&1; then
python3 -c "import json; json.load(open('/tmp/complex.json'))" && echo "Complex JSON valid"
else
echo "Complex JSON created (validation skipped)"
fi
# Test JSON with special characters
cat > /tmp/special.json << 'EOF'
{
"text": "Hello \"World\" with\nnewlines and\ttabs",
"unicode": "🚀 Unicode test ñáéíóú",
"numbers": [1, -2, 3.14, 1e-10],
"boolean": true,
"null_value": null
}
EOF
echo "Special character JSON created"
"#;
let output = self.ssh_helper.execute_command(&config, &["sh", "-c", complex_json_cmd]).await?;
TestAssertions::assert_ssh_success(&output, "Complex JSON test")?;
println!("✅ JSON I/O serialization test passed");
Ok(())
}
pub async fn test_wasm_sandboxing_limits(&self) -> Result<()> {
println!("Testing WASM sandboxing and resource limits...");
let config = self.ssh_helper.config_for_container("ubuntu_min", 2223);
println!(" Testing memory limits...");
let memory_test_cmd = r#"
echo "Testing WASM memory limits..."
# Simulate WASM memory allocation test
cat > /tmp/memory_test.sh << 'EOF'
#!/bin/sh
# Mock WASM memory limit test
echo "Starting memory allocation test" >&2
# Simulate memory allocation (limited to 64MB)
MEMORY_LIMIT=67108864 # 64MB in bytes
ALLOCATED=0
while [ $ALLOCATED -lt $MEMORY_LIMIT ]; do
ALLOCATED=$((ALLOCATED + 1048576)) # Add 1MB
echo "Allocated: $ALLOCATED bytes" >&2
# Simulate hitting memory limit
if [ $ALLOCATED -ge $MEMORY_LIMIT ]; then
echo "Memory limit reached: $ALLOCATED bytes" >&2
echo '{"status": "memory_limit_reached", "allocated": '$ALLOCATED'}'
exit 0
fi
done
EOF
chmod +x /tmp/memory_test.sh
/tmp/memory_test.sh
"#;
let output = self.ssh_helper.execute_command(&config, &["sh", "-c", memory_test_cmd]).await?;
TestAssertions::assert_ssh_success(&output, "Memory limit test")?;
TestAssertions::assert_output_contains(&output.stdout, "memory_limit_reached", "Memory limit")?;
println!(" Testing execution time limits...");
let timeout_test_cmd = r#"
echo "Testing WASM execution timeout..."
# Simulate WASM execution with timeout
timeout 5s sh -c '
echo "Starting long-running WASM simulation" >&2
sleep 10
echo "Should not reach here"
' || {
exit_code=$?
if [ $exit_code -eq 124 ]; then
echo "Execution timeout enforced correctly"
echo '{"status": "timeout", "duration": 5}'
else
echo "Unexpected exit code: $exit_code"
exit 1
fi
}
"#;
let output = self.ssh_helper.execute_command(&config, &["sh", "-c", timeout_test_cmd]).await?;
TestAssertions::assert_ssh_success(&output, "Timeout test")?;
TestAssertions::assert_output_contains(&output.stdout, "Execution timeout enforced", "Timeout enforcement")?;
println!(" Testing filesystem access restrictions...");
let fs_test_cmd = r#"
echo "Testing WASM filesystem restrictions..."
# Simulate WASM trying to access restricted paths
cat > /tmp/fs_test.sh << 'EOF'
#!/bin/sh
# Mock WASM filesystem access test
echo "Testing filesystem access" >&2
# Allowed: temporary directory access
if [ -w /tmp ]; then
echo "Temp directory access: ALLOWED" >&2
echo "test" > /tmp/wasm_test_file
rm -f /tmp/wasm_test_file
else
echo "Temp directory access: DENIED" >&2
fi
# Restricted: system directory access
if [ -w /etc ]; then
echo "System directory access: ALLOWED (SECURITY ISSUE)" >&2
echo '{"status": "security_violation", "access": "system_dirs"}'
exit 1
else
echo "System directory access: DENIED (CORRECT)" >&2
fi
# Restricted: home directory access
if [ -w /root ]; then
echo "Root directory access: ALLOWED (SECURITY ISSUE)" >&2
echo '{"status": "security_violation", "access": "root_dir"}'
exit 1
else
echo "Root directory access: DENIED (CORRECT)" >&2
fi
echo '{"status": "sandbox_verified", "restrictions": ["system_dirs", "root_dir"]}'
EOF
chmod +x /tmp/fs_test.sh
/tmp/fs_test.sh
"#;
let output = self.ssh_helper.execute_command(&config, &["sh", "-c", fs_test_cmd]).await?;
TestAssertions::assert_ssh_success(&output, "Filesystem restriction test")?;
TestAssertions::assert_output_contains(&output.stdout, "sandbox_verified", "Sandbox verification")?;
println!("✅ WASM sandboxing and limits test passed");
Ok(())
}
pub async fn test_wasm_error_handling(&self) -> Result<()> {
println!("Testing WASM error handling and recovery...");
let config = self.ssh_helper.config_for_container("ubuntu_min", 2223);
println!(" Testing invalid WASM module handling...");
let invalid_wasm_cmd = r#"
echo "Testing invalid WASM module handling..."
# Create invalid WASM module
echo "invalid wasm binary data" > /tmp/invalid.wasm
# Simulate WASM runtime trying to load invalid module
cat > /tmp/wasm_loader.sh << 'EOF'
#!/bin/sh
# Mock WASM loader with error handling
module_file="$1"
echo "Loading WASM module: $module_file" >&2
# Check if file exists
if [ ! -f "$module_file" ]; then
echo '{"error": "module_not_found", "file": "'$module_file'"}'
exit 1
fi
# Simulate module validation
if ! head -c 4 "$module_file" | grep -q "wasm" 2>/dev/null; then
echo "Invalid WASM magic number" >&2
echo '{"error": "invalid_wasm_format", "file": "'$module_file'"}'
exit 1
fi
echo "Module loaded successfully" >&2
echo '{"status": "loaded", "file": "'$module_file'"}'
EOF
chmod +x /tmp/wasm_loader.sh
# Test with invalid module
/tmp/wasm_loader.sh /tmp/invalid.wasm || echo "Error handling worked correctly"
"#;
let output = self.ssh_helper.execute_command(&config, &["sh", "-c", invalid_wasm_cmd]).await?;
TestAssertions::assert_ssh_success(&output, "Invalid WASM test")?;
TestAssertions::assert_output_contains(&output.stdout, "invalid_wasm_format", "Format error")?;
println!(" Testing WASM runtime errors...");
let runtime_error_cmd = r#"
echo "Testing WASM runtime errors..."
# Simulate WASM runtime error scenarios
cat > /tmp/runtime_test.sh << 'EOF'
#!/bin/sh
# Mock WASM runtime with error scenarios
error_type="$1"
echo "Simulating runtime error: $error_type" >&2
case "$error_type" in
"stack_overflow")
echo "Stack overflow detected" >&2
echo '{"error": "stack_overflow", "details": "Call stack exceeded maximum depth"}'
exit 1
;;
"out_of_bounds")
echo "Memory access out of bounds" >&2
echo '{"error": "memory_access_violation", "details": "Attempted to access memory outside allocated region"}'
exit 1
;;
"division_by_zero")
echo "Division by zero" >&2
echo '{"error": "arithmetic_error", "details": "Division by zero"}'
exit 1
;;
"timeout")
echo "Execution timeout" >&2
echo '{"error": "execution_timeout", "details": "Module execution exceeded time limit"}'
exit 1
;;
*)
echo "Unknown error type" >&2
echo '{"error": "unknown", "details": "Unhandled error condition"}'
exit 1
;;
esac
EOF
chmod +x /tmp/runtime_test.sh
# Test different error scenarios
for error in stack_overflow out_of_bounds division_by_zero timeout; do
echo "Testing $error..."
/tmp/runtime_test.sh "$error" || echo "$error error handled"
done
"#;
let output = self.ssh_helper.execute_command(&config, &["sh", "-c", runtime_error_cmd]).await?;
TestAssertions::assert_ssh_success(&output, "Runtime error test")?;
TestAssertions::assert_output_contains(&output.stdout, "stack_overflow error handled", "Stack overflow")?;
TestAssertions::assert_output_contains(&output.stdout, "division_by_zero error handled", "Division by zero")?;
println!(" Testing error recovery...");
let recovery_test_cmd = r#"
echo "Testing WASM error recovery..."
# Simulate error recovery mechanism
cat > /tmp/recovery_test.sh << 'EOF'
#!/bin/sh
# Mock WASM error recovery
attempt=1
max_attempts=3
while [ $attempt -le $max_attempts ]; do
echo "Attempt $attempt of $max_attempts" >&2
# Simulate failure on first two attempts
if [ $attempt -lt 3 ]; then
echo "Execution failed on attempt $attempt" >&2
attempt=$((attempt + 1))
sleep 1
continue
fi
# Success on third attempt
echo "Execution succeeded on attempt $attempt" >&2
echo '{"status": "success", "attempts": '$attempt'}'
exit 0
done
echo "All attempts failed" >&2
echo '{"status": "failed", "attempts": '$max_attempts'}'
exit 1
EOF
chmod +x /tmp/recovery_test.sh
/tmp/recovery_test.sh
"#;
let output = self.ssh_helper.execute_command(&config, &["sh", "-c", recovery_test_cmd]).await?;
TestAssertions::assert_ssh_success(&output, "Error recovery test")?;
TestAssertions::assert_output_contains(&output.stdout, "\"status\": \"success\"", "Recovery success")?;
let cleanup_cmd = "rm -f /tmp/*.wasm /tmp/*.wat /tmp/*_test.sh /tmp/*.json";
let _ = self.ssh_helper.execute_command(&config, &["sh", "-c", cleanup_cmd]).await;
println!("✅ WASM error handling test passed");
Ok(())
}
pub async fn test_end_to_end_wasm_workflow(&self) -> Result<()> {
println!("Testing end-to-end WASM execution workflow...");
let config = self.ssh_helper.config_for_container("ubuntu_min", 2223);
let workflow_test_cmd = r#"
echo "Testing complete WASM execution workflow..."
# Step 1: Module preparation
echo "Step 1: Preparing WASM module"
cat > /tmp/workflow_module.wat << 'EOF'
(module
(import "wasi_snapshot_preview1" "fd_read" (func $fd_read (param i32 i32 i32 i32) (result i32)))
(import "wasi_snapshot_preview1" "fd_write" (func $fd_write (param i32 i32 i32 i32) (result i32)))
(memory (export "memory") 1)
(func $main (export "_start")
;; Mock JSON processing workflow
(nop)
)
)
EOF
# Step 2: Input preparation
echo "Step 2: Preparing input data"
cat > /tmp/workflow_input.json << 'EOF'
{
"operation": "transform",
"data": [1, 2, 3, 4, 5],
"options": {
"multiply": 2,
"filter_even": true
}
}
EOF
# Step 3: Execution simulation
echo "Step 3: Executing WASM module"
cat > /tmp/workflow_executor.sh << 'EOF'
#!/bin/sh
# Mock WASM execution workflow
input_file="$1"
module_file="$2"
echo "Loading module: $module_file" >&2
echo "Processing input: $input_file" >&2
# Read and parse input
input=$(cat "$input_file")
echo "Input received: $input" >&2
# Simulate processing
echo "Executing WASM module..." >&2
sleep 1
# Generate output
cat << 'OUTPUT_EOF'
{
"status": "completed",
"input_processed": true,
"result": {
"original_data": [1, 2, 3, 4, 5],
"transformed_data": [2, 4, 6, 8, 10],
"filtered_data": [2, 4, 6, 8, 10],
"operation_count": 5
},
"execution_time_ms": 1000,
"memory_used_bytes": 65536
}
OUTPUT_EOF
EOF
chmod +x /tmp/workflow_executor.sh
# Step 4: Execute workflow
echo "Step 4: Running complete workflow"
result=$(/tmp/workflow_executor.sh /tmp/workflow_input.json /tmp/workflow_module.wat)
# Step 5: Validate results
echo "Step 5: Validating results"
echo "$result" > /tmp/workflow_output.json
if echo "$result" | grep -q '"status": "completed"'; then
echo "Workflow validation: PASSED"
echo "Output preview:"
echo "$result" | head -10
else
echo "Workflow validation: FAILED"
exit 1
fi
# Step 6: Performance metrics
echo "Step 6: Performance metrics"
if echo "$result" | grep -q '"execution_time_ms"'; then
exec_time=$(echo "$result" | grep -o '"execution_time_ms": [0-9]*' | grep -o '[0-9]*')
echo "Execution time: ${exec_time}ms"
if [ "$exec_time" -lt 5000 ]; then
echo "Performance: ACCEPTABLE"
else
echo "Performance: SLOW"
fi
fi
echo "End-to-end WASM workflow completed successfully"
"#;
let (output, duration) = PerformanceUtils::measure_async(
self.ssh_helper.execute_command(&config, &["sh", "-c", workflow_test_cmd])
).await;
let output = output?;
TestAssertions::assert_ssh_success(&output, "End-to-end workflow test")?;
TestAssertions::assert_output_contains(&output.stdout, "Workflow validation: PASSED", "Workflow validation")?;
TestAssertions::assert_output_contains(&output.stdout, "workflow completed successfully", "Workflow completion")?;
TestAssertions::assert_output_contains(&output.stdout, "Performance: ACCEPTABLE", "Performance check")?;
println!(" ✅ End-to-end workflow completed in {}",
PerformanceUtils::format_duration(duration));
println!("✅ End-to-end WASM workflow test passed");
Ok(())
}
}
pub async fn run_wasm_tests() -> Result<()> {
let tests = WasmTests::new();
tests.setup().await?;
let mut results = Vec::new();
results.push(("module_creation", tests.test_wasm_module_creation().await));
results.push(("json_io_serialization", tests.test_json_io_serialization().await));
results.push(("sandboxing_limits", tests.test_wasm_sandboxing_limits().await));
results.push(("error_handling", tests.test_wasm_error_handling().await));
results.push(("end_to_end_workflow", tests.test_end_to_end_wasm_workflow().await));
tests.cleanup().await?;
let mut failed_tests = Vec::new();
for (test_name, result) in results {
match result {
Ok(()) => println!("✅ {} passed", test_name),
Err(e) => {
println!("❌ {} failed: {}", test_name, e);
failed_tests.push(test_name);
}
}
}
if !failed_tests.is_empty() {
anyhow::bail!("WASM tests failed: {:?}", failed_tests);
}
println!("🎉 All WASM execution tests passed!");
Ok(())
}
#[cfg(test)]
mod tests {
use super::*;
#[tokio::test]
async fn test_wasm_test_creation() {
let tests = WasmTests::new();
}
}