Initial commit

Author: khrystynaklochko

7-defi-devpost/coupon/.gitignore

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+/target

7-defi-devpost/coupon/Cargo.toml

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+[package]
+name = "coupon"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+sbor = { git = "https://github.com/radixdlt/radixdlt-scrypto", tag = "v0.8.0" }
+scrypto = { git = "https://github.com/radixdlt/radixdlt-scrypto", tag = "v0.8.0" }
+
+[dev-dependencies]
+transaction = { git = "https://github.com/radixdlt/radixdlt-scrypto", tag = "v0.8.0" }
+radix-engine = { git = "https://github.com/radixdlt/radixdlt-scrypto", tag = "v0.8.0" }
+scrypto-unit = { git = "https://github.com/radixdlt/radixdlt-scrypto", tag = "v0.8.0" }
+
+[profile.release]
+opt-level = 's'        # Optimize for size.
+lto = true             # Enable Link Time Optimization.
+codegen-units = 1      # Reduce number of codegen units to increase optimizations.
+panic = 'abort'        # Abort on panic.
+strip = "debuginfo"    # Strip debug info.
+overflow-checks = true # Panic in the case of an overflow.
+
+[lib]
+crate-type = ["cdylib", "lib"]
+
+[workspace]
+# Set the package crate as its own empty workspace, to hide it from any potential ancestor workspace
+# Remove this [workspace] section if you intend the package to be part of a Cargo workspace

7-defi-devpost/coupon/src/lib.rs

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+use scrypto::prelude::*;
+
+#[blueprint]
+mod hello {
+    struct Hello {
+        // Define what resources and data will be managed by Hello components
+        sample_vault: Vault,
+    }
+
+    impl Hello {
+        // Implement the functions and methods which will manage those resources and data
+
+        // This is a function, and can be called directly on the blueprint once deployed
+        pub fn instantiate_hello() -> ComponentAddress {
+            // Create a new token called "HelloToken," with a fixed supply of 1000, and put that supply into a bucket
+            let my_bucket: Bucket = ResourceBuilder::new_fungible()
+                .metadata("name", "HelloToken")
+                .metadata("symbol", "HT")
+                .mint_initial_supply(1000);
+
+            // Instantiate a Hello component, populating its vault with our supply of 1000 HelloToken
+            Self {
+                sample_vault: Vault::with_bucket(my_bucket)
+            }
+                .instantiate()
+                .globalize()
+        }
+
+        // This is a method, because it needs a reference to self.  Methods can only be called on components
+        pub fn free_token(&mut self) -> Bucket {
+            info!("My balance is: {} HelloToken. Now giving away a token!", self.sample_vault.amount());
+            // If the semi-colon is omitted on the last line, the last value seen is automatically returned
+            // In this case, a bucket containing 1 HelloToken is returned
+            self.sample_vault.take(1)
+        }
+    }
+}

7-defi-devpost/coupon/tests/lib.rs

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+use radix_engine_interface::model::FromPublicKey;
+use scrypto::prelude::*;
+use scrypto_unit::*;
+use transaction::builder::ManifestBuilder;
+
+#[test]
+fn test_hello() {
+    // Setup the environment
+    let mut test_runner = TestRunner::builder().build();
+
+    // Create an account
+    let (public_key, _private_key, account_component) = test_runner.new_allocated_account();
+
+    // Publish package
+    let package_address = test_runner.compile_and_publish(this_package!());
+
+    // Test the `instantiate_hello` function.
+    let manifest = ManifestBuilder::new()
+        .call_function(package_address, "Hello", "instantiate_hello", args!())
+        .build();
+    let receipt = test_runner.execute_manifest_ignoring_fee(
+        manifest,
+        vec![NonFungibleGlobalId::from_public_key(&public_key)],
+    );
+    println!("{:?}\n", receipt);
+    receipt.expect_commit_success();
+    let component = receipt
+        .expect_commit()
+        .entity_changes
+        .new_component_addresses[0];
+
+    // Test the `free_token` method.
+    let manifest = ManifestBuilder::new()
+        .call_method(component, "free_token", args!())
+        .call_method(
+            account_component,
+            "deposit_batch",
+            args!(ManifestExpression::EntireWorktop),
+        )
+        .build();
+    let receipt = test_runner.execute_manifest_ignoring_fee(
+        manifest,
+        vec![NonFungibleGlobalId::from_public_key(&public_key)],
+    );
+    println!("{:?}\n", receipt);
+    receipt.expect_commit_success();
+}