Feat/add tests

.github/CODEOWNERS

@@ -0,0 +1,10 @@
+# This CODEOWNERS file sets the individuals responsible for code in the zksync2-go Golang SDK repository.
+
+# These users are the default owners for everything in the repo.
+# They will be requested for review when someone opens a pull request.
+* @zksync-sdk/txfusion
+
+# You can also specify code owners for specific directories or files.
+# For example:
+# /src/ @developer1 @developer2
+# /docs/ @documenter

.github/CONTRIBUTING.md

@@ -0,0 +1,84 @@
+# Contributing
+
+## Welcome! 👋
+
+Hello there, contributor! We're delighted that you're considering contributing to the `zksync2-examples` project. This document is here to guide you through the steps and best practices for contributing to this repository.
+
+Please take a moment to review this document to ensure a smooth and efficient contribution process for everyone involved.
+
+## Getting Started
+
+- **Fork the repository.** Begin by forking the main `zksync2-examples` repository to your personal GitHub account.
+
+- **Clone the repository.** After forking, clone the repository to your local machine:
+
+```bash
+git clone https://github.com/<your-github-username>/zksync2-examples.git
+```
+
+- **Create a new branch.** Use descriptive names for your branches to help identify the feature, bugfix, or enhancement you're addressing:
+
+```bash
+git checkout -b feature/description-of-your-feature
+```
+
+## Making Changes
+
+### Go examples
+
+- **Write your code.** Ensure your code is thoroughly tested and functions as expected. Code must be documented adhering to the official Go [commentary](https://golang.org/doc/effective_go.html#commentary) guidelines.
+- **Compile and test.** Before submitting a pull request, ensure your code compiles, passes lint checks, and all tests are successful. You should also write unit tests for your contributions. 
+- **Lint your code.** Follow basic coding style guidelines and  ensure your code is formatted and lint checks pass. 
+
+Use the following commands for these checks:
+
+```bash
+gofmt -w .
+got test ./test/...
+```
+
+### JavaScript examples
+
+- **Write your code.** Ensure your code is thoroughly tested and functions as expected. Code must be documented adhering to the official Go [commentary](https://golang.org/doc/effective_go.html#commentary) guidelines.
+- **Compile and test.** Before submitting a pull request, ensure your code compiles, passes lint checks, and all tests are successful. You should also write unit tests for your contributions.
+- **Lint your code.** Follow basic coding style guidelines and  ensure your code is formatted and lint checks pass.
+
+Use the following commands for these checks:
+
+```bash
+yarn lint
+yarn test
+yarn types
+yarn build
+```
+
+## Submitting changes
+
+- **Commit your changes.** Adhere to the [Conventional Commits](https://www.conventionalcommits.org/) standard when writing commit messages.
+
+- **Push your changes.** Push the changes to your forked repository:
+
+```bash
+git push -u origin feature/description-of-your-feature
+```
+
+## Submitting a Pull Request
+
+- **Initiate a pull request (PR).** Go to the main `zksync2-go` repository. Your recently pushed branch should be highlighted, showing a "Compare & pull request" button. Click on it and provide a clear, detailed description of your changes in the PR.
+
+- **Await a review.** Our maintainers will review your PR. They might request changes or clarifications, so be ready to address any feedback.
+
+
+## Need Assistance?
+
+If you're unsure about something or have questions, don't hesitate to open an issue or initiate a discussion in our [zkSync Community Hub](https://github.com/zkSync-Community-Hub/zkSync-developers/discussions). We're here to assist!
+
+## What's Next?
+
+Once your PR is approved and merged, your contribution will be integrated into the `zksync2-go` repository. Congratulations, and thank you! We value your contribution and look forward to future collaborations.
+
+Remember, the best contributions come from enjoying the process, being respectful, and continuously learning. Thanks for being a part of our community!
+
+---
+
+*Last updated: Dec 22, 2023*

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,45 @@
+---
+name: Bug report
+about: Use this template for reporting issues
+title: ""
+labels: bug
+assignees: ''
+
+---
+
+### 🐛 Bug Report for zksync2-js JavaScript SDK
+
+#### 📝 Description
+
+Provide a clear and concise description of the bug.
+
+
+#### 🔄 Reproduction Steps
+
+1. Step 1
+2. Step 2
+3. ...
+
+#### 🤔 Expected Behavior
+
+Describe what you expected to happen.
+
+#### 😯 Current Behavior
+
+Describe what actually happened.
+
+#### 🖥️ Environment
+
+- **Node version**: [e.g., Node 18.16.1]
+- **Operating System & Version**: [e.g., Ubuntu 20.04]
+- **Other relevant environment details**:
+
+#### 📋 Additional Context
+
+Add any other context about the problem here. If applicable, add screenshots to help explain.
+
+#### 📎 Log Output
+
+```
+Paste any relevant log output here.
+```

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,11 @@
+blank_issues_enabled: true
+contact_links:
+    - name: zksync-developers Discussion
+      url: https://github.com/zkSync-Community-Hub/zkync-developers/discussions
+      about: Please provide feedback, and ask questions here.
+    - name: zksync-web3 SDK documentation page
+      url: https://era.zksync.io/docs/api/js/
+      about: Please refer to the documentation for immediate answers.
+    - name: zksync2-js SDK documentation page
+      url: https://era.zksync.io/docs/api/js/zksync2-js
+      about: Please refer to the documentation for immediate answers.

.github/ISSUE_TEMPLATE/feature_report.md

@@ -0,0 +1,26 @@
+---
+name: Feature request
+about: Use this template for requesting features
+title: ""
+labels: feat
+assignees: ''
+
+---
+
+### 🌟 Feature Request
+
+#### 📝 Description
+
+Provide a clear and concise description of the feature you'd like to see.
+
+#### 🤔 Rationale
+
+Explain why this feature is important and how it benefits the project.
+
+#### 🖼️ Mockups/Examples
+
+If applicable, provide mockups or examples of how the feature would work.
+
+#### 📋 Additional Context
+
+Add any other context or information about the feature request here.

.github/pull_request_template.md

@@ -0,0 +1,17 @@
+# What :computer: 
+* First thing updated with this PR
+* Second thing updated with this PR
+* Third thing updated with this PR
+
+# Why :hand:
+* Reason why first thing was added to PR
+* Reason why second thing was added to PR
+* Reason why third thing was added to PR
+
+# Evidence :camera:
+Include screenshots, screen recordings, or `console` output here demonstrating that your changes work as intended
+
+<!-- All sections below are optional. You can erase any section not applicable to your Pull Request. -->
+
+# Notes :memo:
+* Any notes/thoughts that the reviewers should know prior to reviewing the code?

.github/workflows/test-go.yml

@@ -0,0 +1,31 @@
+name: Run tests Go
+on:
+  workflow_dispatch:
+  pull_request:
+    branch: main
+    types: [ opened, reopened, synchronize ]
+
+permissions:
+  contents: read # for checkout
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Install Go
+        uses: actions/[email protected]
+      - name: Install dependencies
+        run: cd go && go mod download
+      - name: Run local-setup
+        run: |
+          git clone https://github.com/matter-labs/local-setup.git
+          pushd local-setup
+          docker-compose up -d
+          popd
+      - name: Run tests
+        run: cd go && go test ./test/...

.github/workflows/test-js.yml

@@ -0,0 +1,37 @@
+name: Run tests
+on:
+  workflow_dispatch:
+  pull_request:
+    branch: main
+    types: [ opened, reopened, synchronize ]
+
+permissions:
+  contents: read # for checkout
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: "lts/*"
+      - name: Install dependencies
+        run: cd js && yarn install
+      - name: Run local-setup
+        run: |
+          git clone https://github.com/matter-labs/local-setup.git
+          pushd local-setup
+          docker-compose up -d
+          popd
+      - name: Wait for local-setup to be ready
+        run: cd js && yarn test:wait
+      - name: Prepare environment
+        run: cd js && yarn test:prepare
+      - name: Run tests
+        run: cd js && yarn test

.github/workflows/validate.yml

@@ -0,0 +1,96 @@
+name: Validate
+on:
+  pull_request:
+    branch: main
+    types: [ opened, reopened, synchronize ]
+
+permissions:
+  contents: read # for checkout
+
+jobs:
+  lint-go:
+    name: Check code format for Go
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Install Go
+        uses: actions/[email protected]
+      - name: Run gofmt
+        run: |
+          cd go
+          fmt_output=$(gofmt -l .)
+
+          if [ -n "$fmt_output" ]; then
+            echo "Code not formatted correctly:"
+            echo "$fmt_output"
+            exit 1
+          else
+            echo "Code is formatted correctly"
+            exit 0
+          fi
+  lint-js:
+    name: Check code format for JavaScript
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: "lts/*"
+      - name: Install dependencies
+        run: cd js && yarn install
+      - name: Prepare environment
+        run: cd js && yarn lint:check
+  commits:
+    name: Check commits
+    runs-on: ubuntu-latest
+    if: github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: "lts/*"
+      - name: Install dependencies
+        run: npm install -g @commitlint/cli @commitlint/config-conventional
+      - name: Configure
+        run: |
+          echo 'module.exports = {"extends": ["@commitlint/config-conventional"]}' > commitlint.config.js
+      - name: Validate
+        run: |
+          git fetch 
+          npx commitlint \
+            --from ${{ github.event.pull_request.head.sha }}~${{ github.event.pull_request.commits }} \
+            --to ${{ github.event.pull_request.head.sha }} \
+            --verbose
+  commits-fork:
+    name: Check commits from forks
+    runs-on: ubuntu-latest
+    if: github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name != github.repository
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: "lts/*"
+      - name: Install dependencies
+        run: npm install -g @commitlint/cli @commitlint/config-conventional
+      - name: Configure
+        run: |
+          echo 'module.exports = {"extends": ["@commitlint/config-conventional"]}' > commitlint.config.js
+      - name: Validate
+        run: |
+          git fetch origin "+refs/pull/${{ github.event.pull_request.number }}/head:refs/pull/${{ github.event.pull_request.number }}/head"
+          git checkout "refs/pull/${{ github.event.pull_request.number }}/head"
+          npx commitlint \
+            --from HEAD~${{ github.event.pull_request.commits }} \
+            --to HEAD \
+            --verbose

go/.gitignore

@@ -0,0 +1 @@
+test/token.json

go/08_get_confirmed_tokens.go

@@ -7,6 +7,8 @@ import (
 	"log"
 )
 
+// WARNING
+// Method client.ConfirmedTokens will be removed in the future
 func main() {
 	var (
 		ZkSyncEraProvider = "https://sepolia.era.zksync.dev"