test: try to reproduce addresse string corruption

Author: fubhy

tests/integration-tests/address-corruption/abis/Contract.abi

@@ -0,0 +1,33 @@
+[
+  {
+    "inputs": [],
+    "stateMutability": "nonpayable",
+    "type": "constructor"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": false,
+        "internalType": "uint16",
+        "name": "x",
+        "type": "uint16"
+      }
+    ],
+    "name": "Trigger",
+    "type": "event"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint16",
+        "name": "x",
+        "type": "uint16"
+      }
+    ],
+    "name": "emitTrigger",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  }
+]

tests/integration-tests/address-corruption/package.json

@@ -0,0 +1,13 @@
+{
+  "name": "address-corruption",
+  "version": "0.0.0",
+  "private": true,
+  "scripts": {
+    "codegen": "graph codegen --skip-migrations",
+    "deploy:test": "graph deploy test/address-corruption --version-label v0.0.1 --ipfs $IPFS_URI --node $GRAPH_NODE_ADMIN_URI"
+  },
+  "devDependencies": {
+    "@graphprotocol/graph-cli": "0.69.0",
+    "@graphprotocol/graph-ts": "0.34.0"
+  }
+}

tests/integration-tests/address-corruption/schema.graphql

@@ -0,0 +1,7 @@
+type AddressTest @entity {
+  id: ID!
+  originalString: String!
+  parsedAddress: Bytes
+  testType: String!
+  errorMessage: String
+}

tests/integration-tests/address-corruption/src/mapping.ts

@@ -0,0 +1,13 @@
+import { Address, log } from '@graphprotocol/graph-ts'
+import { Trigger } from "../generated/Contract/Contract"
+
+export function handleTrigger(_: Trigger): void {
+  log.info("ADDRESS CORRUPTION TEST - ADDRESS: {}", ["0x3b44b2a187a7b3824131f8db5a74194d0a42fc15"])
+  log.info("ADDRESS CORRUPTION TEST - LENGTH: {}", ["0x3b44b2a187a7b3824131f8db5a74194d0a42fc15".length.toString()])
+
+  // This call should fail with: "Failed to convert string to Address/H160: '': Invalid input length"
+  let address = Address.fromString("0x3b44b2a187a7b3824131f8db5a74194d0a42fc15")
+
+  // If we reach here, the bug is not reproduced
+  log.info("ADDRESS CORRUPTION TEST - ALL GOOD: {}", [address.toHexString()])
+}

tests/integration-tests/address-corruption/subgraph.yaml

@@ -0,0 +1,23 @@
+specVersion: 0.0.4
+schema:
+  file: ./schema.graphql
+dataSources:
+  - kind: ethereum/contract
+    name: Contract
+    network: test
+    source:
+      address: "@SimpleContract@"
+      abi: Contract
+    mapping:
+      kind: ethereum/events
+      apiVersion: 0.0.6
+      language: wasm/assemblyscript
+      abis:
+        - name: Contract
+          file: ./abis/Contract.abi
+      entities:
+        - AddressTest
+      eventHandlers:
+        - event: Trigger(uint16)
+          handler: handleTrigger
+      file: ./src/mapping.ts

tests/tests/integration_tests.rs

@@ -1086,6 +1086,38 @@ async fn wait_for_blockchain_block(block_number: i32) -> bool {
     false
 }
 
+async fn test_address_corruption(ctx: TestContext) -> anyhow::Result<()> {
+    let subgraph = ctx.subgraph;
+    assert!(subgraph.healthy);
+
+    // Read the graph-node.log file to analyze the actual log output
+    let log_path = std::path::PathBuf::from(env!("CARGO_MANIFEST_DIR"))
+        .join("integration-tests")
+        .join("graph-node.log");
+    let log_content = std::fs::read_to_string(&log_path)
+        .with_context(|| format!("Failed to read log file: {}", log_path.display()))?;
+
+    // Ensure our test actually ran with the specific problematic address
+    assert!(
+        log_content.contains("ADDRESS CORRUPTION TEST - ADDRESS: 0x3b44b2a187a7b3824131f8db5a74194d0a42fc15"),
+        "Address corruption test mapping did not execute - no test logs found for the problematic address"
+    );
+
+    // Assert that the test completed successfully with the parsed address (bug is not reproduced)
+    assert!(
+        log_content.contains("ADDRESS CORRUPTION TEST - ALL GOOD: 0x3b44b2a187a7b3824131f8db5a74194d0a42fc15"),
+        "Address corruption test should complete successfully with parsed address - bug should not be reproduced in current codebase"
+    );
+
+    // Assert that the bug error is not present
+    assert!(
+        !log_content.contains("Failed to convert string to Address/H160: ''"),
+        "String corruption bug should not be present - Address.fromString() should work correctly"
+    );
+
+    Ok(())
+}
+
 /// The main test entrypoint.
 #[tokio::test]
 async fn integration_tests() -> anyhow::Result<()> {
@@ -1094,6 +1126,7 @@ async fn integration_tests() -> anyhow::Result<()> {
     let cases = vec![
         TestCase::new("reverted-calls", test_reverted_calls_are_indexed),
         TestCase::new("host-exports", test_host_exports),
+        TestCase::new("address-corruption", test_address_corruption),
         TestCase::new("non-fatal-errors", test_non_fatal_errors),
         TestCase::new("overloaded-functions", test_overloaded_functions),
         TestCase::new("poi-for-failed-subgraph", test_poi_for_failed_subgraph),