// Example DAL Test File - Layer 3 Testing
// This demonstrates the Hardhat-style testing framework for DAL
// Run with: dist_agent_lang test token_contract.test.dal
// Note: This is a conceptual example showing the intended syntax.
// The test runner is not yet fully implemented.
describe("TokenContract - Basic Functionality", fn() {
let contract;
let owner = "alice";
let recipient = "bob";
let initial_supply = 1000.0;
beforeEach(fn() {
// Deploy a fresh contract instance for each test
contract = deploy_service("TokenContract", {
"owner": owner,
"initial_supply": initial_supply
});
print("✓ TokenContract deployed");
});
afterEach(fn() {
// Cleanup after each test
reset_context();
});
it("should initialize with correct supply", fn() {
let supply = contract.total_supply();
// Layer 3: Runtime behavior validation
expect(supply).to_equal(initial_supply);
// Layer 2: Semantic validation
test::expect_type(supply, "number");
test::expect_in_range(supply, 0.0, 1000000.0);
print("✓ Initial supply is correct");
});
it("should have zero balance for new addresses", fn() {
let balance = contract.balance_of("charlie");
expect(balance).to_equal(0.0);
test::expect_type(&balance, "number");
});
it("should transfer tokens correctly", fn() {
let transfer_amount = 100.0;
// Get initial balances
let sender_initial = contract.balance_of(owner);
let recipient_initial = contract.balance_of(recipient);
// Perform transfer
contract.transfer(recipient, transfer_amount);
// Verify balances
let sender_final = contract.balance_of(owner);
let recipient_final = contract.balance_of(recipient);
expect(sender_final).to_equal(sender_initial - transfer_amount);
expect(recipient_final).to_equal(recipient_initial + transfer_amount);
// Semantic validation
test::expect_in_range(sender_final, 0.0, initial_supply);
test::expect_in_range(recipient_final, 0.0, initial_supply);
print("✓ Transfer completed successfully");
});
it("should reject negative transfer amounts", fn() {
expect_throws(fn() {
contract.transfer(recipient, -100.0);
}, "negative amounts not allowed");
print("✓ Negative amounts rejected");
});
it("should reject transfers exceeding balance", fn() {
expect_throws(fn() {
contract.transfer(recipient, initial_supply + 100.0);
}, "insufficient balance");
print("✓ Insufficient balance rejected");
});
it("should handle zero amount transfers", fn() {
let initial_balance = contract.balance_of(recipient);
contract.transfer(recipient, 0.0);
let final_balance = contract.balance_of(recipient);
expect(final_balance).to_equal(initial_balance);
print("✓ Zero transfers handled");
});
it("should maintain total supply invariant", fn() {
// Total supply should never change during transfers
let initial_total = contract.total_supply();
contract.transfer("bob", 100.0);
contract.transfer("charlie", 50.0);
contract.transfer("dave", 25.0);
let final_total = contract.total_supply();
expect(final_total).to_equal(initial_total);
print("✓ Total supply invariant maintained");
});
});
describe("TokenContract - Attribute Validation", fn() {
it("should have valid trust model", fn() {
// Layer 2: Semantic validation of attributes
let trust_model = "hybrid";
test::expect_valid_trust_model(trust_model);
print("✓ Trust model is valid");
});
it("should have valid blockchain", fn() {
let chain = "ethereum";
test::expect_valid_chain(chain);
print("✓ Blockchain is valid");
});
it("should have compatible attributes", fn() {
// Trust requires chain
let attributes = ["trust", "chain"];
test::expect_compatible_attributes(attributes);
print("✓ Attributes are compatible");
});
it("should reject incompatible attributes", fn() {
expect_throws(fn() {
// Secure and public are mutually exclusive
test::expect_compatible_attributes(["secure", "public"]);
}, "mutually exclusive");
print("✓ Incompatible attributes rejected");
});
});
describe("TokenContract - Edge Cases", fn() {
let contract;
beforeEach(fn() {
contract = deploy_service("TokenContract", {
"owner": "alice",
"initial_supply": 1000.0
});
});
it("should handle maximum value transfers", fn() {
let max_amount = contract.balance_of("alice");
contract.transfer("bob", max_amount);
expect(contract.balance_of("alice")).to_equal(0.0);
expect(contract.balance_of("bob")).to_equal(max_amount);
print("✓ Maximum value transfers work");
});
it("should handle transfer to self", fn() {
let initial = contract.balance_of("alice");
contract.transfer("alice", 100.0);
// Balance should be unchanged
expect(contract.balance_of("alice")).to_equal(initial);
print("✓ Self-transfers handled");
});
it("should handle multiple consecutive transfers", fn() {
let amounts = [10.0, 20.0, 30.0, 40.0, 50.0];
let total = 0.0;
for amount in amounts {
contract.transfer("bob", amount);
total = total + amount;
}
expect(contract.balance_of("bob")).to_equal(total);
print("✓ Multiple transfers work correctly");
});
it("should validate string lengths", fn() {
let address = "0x1234567890123456789012345678901234567890";
// Ethereum addresses should be 42 characters (0x + 40 hex)
test::expect_length(address, 42);
test::expect_starts_with(address, "0x");
test::expect_contains(address, "1234");
print("✓ Address format validated");
});
it("should handle empty string addresses gracefully", fn() {
expect_throws(fn() {
contract.transfer("", 100.0);
}, "invalid address");
print("✓ Empty addresses rejected");
});
});
describe("TokenContract - Performance", fn() {
let contract;
beforeEach(fn() {
contract = deploy_service("TokenContract", {
"owner": "alice",
"initial_supply": 100000.0
});
});
it("should handle many transfers efficiently", fn() {
let start_time = time::now();
// Perform 100 transfers
for i in 0..100 {
let recipient = "user_" + string(i);
contract.transfer(recipient, 10.0);
}
let duration = time::now() - start_time;
// Should complete in reasonable time (< 1 second)
test::expect_in_range(duration, 0.0, 1000.0);
print("✓ Performance test passed");
});
it("should handle large balance maps", fn() {
// Create many addresses
for i in 0..1000 {
let addr = "user_" + string(i);
contract.transfer(addr, 1.0);
}
// Map should contain all addresses
let balance_count = contract.address_count();
test::expect_in_range(balance_count, 1000.0, 1001.0);
print("✓ Large map test passed");
});
});
// Test suite for integration scenarios
describe("TokenContract - Integration", fn() {
let token_contract;
let escrow_contract;
beforeEach(fn() {
token_contract = deploy_service("TokenContract", {
"owner": "alice",
"initial_supply": 10000.0
});
// Deploy complementary service
escrow_contract = deploy_service("EscrowContract", {
"token": token_contract
});
});
it("should integrate with escrow contract", fn() {
// Alice deposits tokens into escrow
token_contract.approve(escrow_contract, 500.0);
escrow_contract.deposit("alice", 500.0);
// Verify escrow has tokens
expect(token_contract.balance_of(escrow_contract)).to_equal(500.0);
// Release from escrow to Bob
escrow_contract.release("alice", "bob", 500.0);
// Verify Bob received tokens
expect(token_contract.balance_of("bob")).to_equal(500.0);
print("✓ Token/Escrow integration works");
});
});
// Run all tests
print("\n🧪 Running TokenContract test suite...\n");