rollup anchor for ink smart contract

ink/Cargo.toml

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+[workspace]
+resolver = "2"
+members = [
+    "crates/phat_rollup_anchor_ink",
+    "contracts/test_oracle",
+]

ink/contracts/test_oracle/Cargo.toml

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+[package]
+name = "test_oracle"
+version = "0.0.1"
+authors = ["GuiGou"]
+edition = "2021"
+
+[dependencies]
+ink = { version = "4.2", default-features = false }
+
+scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
+scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
+
+openbrush = { git = "https://github.com/727-Ventures/openbrush-contracts", version = "3.1.1", features = ["ownable", "access_control"], default-features = false }
+
+phat_rollup_anchor_ink = { path = "../../crates/phat_rollup_anchor_ink", default-features = false}
+
+[dev-dependencies]
+ink_e2e = { version = "4.2" }
+hex-literal = { version = "0.4.1" }
+
+[lib]
+path = "lib.rs"
+
+[features]
+default = ["std"]
+std = [
+    "ink/std",
+    "scale/std",
+    "scale-info/std",
+    "openbrush/std",
+    "phat_rollup_anchor_ink/std",
+]
+ink-as-dependency = []
+e2e-tests = []

ink/contracts/test_oracle/README.md

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+# Test Oracle
+
+Implements a simple oracle to get/display the price of trading pairs. It uses the crate `phat_rollup_anchor_ink`.
+It supports:
+ - create a trading pair with an id and the token names. The name must match with the API id from CoinGecko. By example: `polkadot`, `astar`, `pha`, `usd`. Only an address granted as `MANAGER` can do it.
+ - configure the attestor authorized to send the prices. Only an address granted as `MANAGER` can do it.
+ - send a request to get the price of a given trading pair. Only an address granted as `MANAGER` can do it.
+ - handle the messages to feed the trading pair. Only an address granted as `ATTESTOR` can do it.
+ - display the trading pair with this id.
+ - allow meta transactions to separate the attestor and the payer.
+
+By default, the contract owner is granted as `MANAGER` but it is not granted as `ATTESTOR`.
+
+## Build
+
+To build the contract:
+
+```bash
+cargo contract build
+```
+
+## Run e2e tests
+
+Before you can run the test, you have to install a Substrate node with pallet-contracts. By default, `e2e tests` require that you install `substrate-contracts-node`. You do not need to run it in the background since the node is started for each test independently. To install the latest version:
+```bash
+cargo install contracts-node --git https://github.com/paritytech/substrate-contracts-node.git
+```
+
+If you want to run any other node with pallet-contracts you need to change `CONTRACTS_NODE` environment variable:
+```bash
+export CONTRACTS_NODE="YOUR_CONTRACTS_NODE_PATH"
+```
+
+And finally execute the following command to start e2e tests execution.
+```bash
+cargo test --features e2e-tests
+```