Add pda and cpi example on anchor (#6)

README.md

@@ -34,6 +34,7 @@
 * **[Demo 1: Hello World](demos/01_hello_world)**
 * **[Demo 2. Anchor and CPI](demos/02_anchor_cpi)**
 * **[Demo 3. Program Derived Addresses](demos/03_anchor_pda)**
+* **[Demo 4: PDA and CPI on Anchor](demos/04_pda_and_cpi)**
 
 
 <br>

chapters/04_program_derived_addresses.md

@@ -98,6 +98,12 @@ pub struct UserStats {
 
 <br>
 
+
+* Learn how PDA and CPI works on Anchor through [demo 4](https://github.com/urani-labs/solana-dev-onboarding-rs/tree/main/demos/04_pda_and_cpi).
+
+<br>
+
+
 ---
 
 ### References

demos/02_anchor_cpi/puppet-master/programs/puppet-master/src/lib.rs

@@ -12,7 +12,8 @@ declare_id!("DrL7fRZQKqF7GQuvzxYe4K6MV4inzodj8dhr1PPV8Fqr");
 mod puppet_master {
     use super::*;
     pub fn pull_strings(ctx: Context<PullStrings>, data: u64) -> Result<()> {
-        puppet::cpi::set_data(ctx.accounts.set_data_ctx(), data)
+        puppet::cpi::set_data(ctx.accounts.set_data_ctx(), 
+        data)
     }
 }
 

demos/04_pda_and_cpi/README.md

@@ -0,0 +1,18 @@
+# 🛹 Demo 4: PDA and CPI on Anchor
+
+<br>
+
+
+* Build with both libraries, puppet and puppet-master, with:
+
+```
+anchor build
+```
+
+<br>
+
+* And then run tests on puppet with:
+
+```
+anchor test
+```

demos/04_pda_and_cpi/puppet-master/.gitignore

@@ -0,0 +1,8 @@
+
+.anchor
+.DS_Store
+target
+**/*.rs.bk
+node_modules
+test-ledger
+.yarn

demos/04_pda_and_cpi/puppet-master/.prettierignore

@@ -0,0 +1,8 @@
+
+.anchor
+.DS_Store
+target
+node_modules
+dist
+build
+test-ledger

demos/04_pda_and_cpi/puppet-master/Anchor.toml

@@ -0,0 +1,18 @@
+[toolchain]
+
+[features]
+seeds = false
+skip-lint = false
+
+[programs.localnet]
+puppet_master = "5qPWqmiH7XAEyg14rqCm1LgmqhdT7DYsbnM5g2hZ2mVZ"
+
+[registry]
+url = "https://api.apr.dev"
+
+[provider]
+cluster = "Localnet"
+wallet = "/Users/m/.config/solana/id.json"
+
+[scripts]
+test = "yarn run ts-mocha -p ./tsconfig.json -t 1000000 tests/**/*.ts"