feat: add forc tests to create fuels (#3585)

* feat: added tests

* chore: added test workflow

* chore: fix CI

* chore: bump `forc` to `0.66.6`

* chore: changeset

* docs: updated docs

* chore: added `forc` to knip

* chore: fix namespaces

* chore: update templates

* chore: appeasing the `forc fmt`

* chore: fix import

* chore: changeset

* Update .changeset/lemon-avocados-walk.md

* Update .changeset/lemon-avocados-walk.md

* chore: ignore forc

---------

Co-authored-by: Sérgio Torres <[email protected]>

Author: petertonysmith94

.changeset/loud-deers-wait.md

@@ -0,0 +1,5 @@
+---
+"create-fuels": patch
+---
+
+feat: add `forc` tests to create fuels

.github/workflows/test.yaml

@@ -91,6 +91,25 @@ jobs:
         env:
           PUBLISHED_NPM_TAG: next
 
+  forc:
+    runs-on: ubuntu-latest
+    timeout-minutes: 25
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Test Setup
+        uses: ./.github/actions/test-setup
+
+      - name: Setup forc and fuel-core paths
+        shell: bash
+        run: |
+          echo "$PWD/internal/forc/forc-binaries" >> $GITHUB_PATH
+          echo "$PWD/internal/fuel-core/fuel-core-binaries" >> $GITHUB_PATH
+
+      - name: Run Tests
+        run: pnpm test:forc
+
   e2e:
     runs-on: ubuntu-latest
     timeout-minutes: 25

.knip.json

@@ -4,6 +4,7 @@
     "apps/docs/src/guide/types/snippets/numbers/for-u8-u16-and-u32-2.ts"
   ],
   "ignore": [".github/**"],
+  "ignoreBinaries": ["forc"],
   "ignoreDependencies": [
     "fuels",
     "bun",

apps/create-fuels-counter-guide/package.json

@@ -5,6 +5,7 @@
   "type": "module",
   "scripts": {
     "test:ui": "sh ./test/ui/test-ui.sh",
+    "test:forc": "forc test --path ./sway-programs",
     "original:dev": "vite",
     "original:build": "tsc -b && vite build",
     "original:start": "vite start",

apps/create-fuels-counter-guide/sway-programs/contract/src/main.sw

@@ -44,3 +44,36 @@ impl Counter for Contract {
     }
 }
 // #endregion create-fuels-counter-guide-impl
+
+#[test]
+fn should_get_count() {
+    let contract_instance = abi(Counter, CONTRACT_ID);
+    let expected = 0;
+
+    let actual = contract_instance.get_count();
+
+    assert(actual == expected);
+}
+
+#[test]
+fn should_increment_counter() {
+    let contract_instance = abi(Counter, CONTRACT_ID);
+    let count_before = contract_instance.get_count();
+    let expected = count_before + 1;
+
+    let count_after = contract_instance.increment_counter(1);
+
+    assert(count_after == expected);
+}
+
+// #region create-fuels-counter-guide-sway-contract-test
+#[test]
+fn test_decrement_counter() {
+    let contract_instance = abi(Counter, CONTRACT_ID);
+    let _ = contract_instance.increment_counter(5);
+
+    let count_before = contract_instance.get_count();
+    let count_after = contract_instance.decrement_counter(1);
+    assert(count_after == count_before - 1);
+}
+// #endregion create-fuels-counter-guide-sway-contract-test

apps/create-fuels-counter-guide/sway-programs/predicate/src/main.sw

@@ -10,3 +10,21 @@ configurable {
 fn main(pin: u64) -> bool {
     return PIN == pin;
 }
+
+#[test]
+fn should_return_true_when_password_is_1337() {
+    let expected = true;
+
+    let actual = main(1337);
+
+    assert(actual == expected);
+}
+
+#[test]
+fn should_return_false_when_password_is_not_1337() {
+    let expected = false;
+
+    let actual = main(1338);
+
+    assert(actual == expected);
+}

apps/create-fuels-counter-guide/sway-programs/script/src/main.sw

@@ -4,3 +4,12 @@ script;
 fn main(input: u64) -> u64 {
     return input;
 }
+
+#[test]
+fn should_return_input() {
+    let expected = 1234;
+
+    let actual = main(1234);
+
+    assert(actual == expected);
+}

apps/docs/src/guide/creating-a-fuel-dapp/index.md

@@ -196,7 +196,19 @@ You can find the complete source code of the dApp we built [here](https://github
 
 Whenever you want to add a new feature to your dApp and quickly prototype things, you can follow the same steps we followed in this guide.
 
-### 3. Extending the Test Suite (Optional)
+### 3. Extending the contract testing suite (Optional)
+
+Testing our smart contract is a good practice to ensure that our implementation is working as expected. It also give assurances down the line if we decide to change the implementation of our contract.
+
+We write our test in the `#[test]` macro within our Sway contract, these can be inline within our Sway contract or in a separate file.
+
+For the guide, we'll add a test for our new `decrement_counter` function in the `./sway-programs/contract/src/main.sw` file:
+
+<<< @/../../create-fuels-counter-guide/sway-programs/contract/src/main.sw#create-fuels-counter-guide-sway-contract-test{rust:line-numbers}
+
+After writing our test, we can run either using `forc test` or via PNPM using `pnpm test:forc`.
+
+### 4. Extending the integration test suite (Optional)
 
 Testing the integration with your smart contract isn't essential, but it's good practice to ensure that your application is working as expected. It also gives you the ability to test your application in a controlled environment against a local node.
 

package.json

@@ -31,6 +31,7 @@
     "test:browser:filter": "vitest --run --coverage false --config vitest.browser.config.mts",
     "test:e2e": "vitest --run --config vitest.node.config.mts $(scripts/tests-find.sh --e2e)",
     "test:integration": "vitest --run --config vitest.node.config.mts $(scripts/tests-find.sh --integration)",
+    "test:forc": "turbo run test:forc",
     "test:network": "vitest --run --config vitest.node.config.mts $(scripts/tests-find.sh --network)",
     "lint": "run-s type:check-tests lint:check prettier:check type:check",
     "lint:check": "eslint . --ext .ts --max-warnings 0",

templates/nextjs/package.json

@@ -9,7 +9,9 @@
     "build": "pnpm run xprebuild && next build",
     "start": "next start",
     "lint": "next lint",
-    "test": "vitest",
+    "test": "run-s test:*",
+    "test:forc": "forc test --path ./sway-programs",
+    "test:e2e": "vitest",
     "test:ui": "sh ./test/ui/test-ui.sh"
   },
   "dependencies": {