add codecov.yml

.github/workflows/coverage.yml

@@ -12,7 +12,7 @@ env:
   ARB_MAINNET_RPC: ${{ secrets.ARB_MAINNET_RPC }}
 
 jobs:
-  build:
+  coverage:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3

codecov.yml

@@ -0,0 +1,34 @@
+codecov:
+  require_ci_to_pass: yes
+
+coverage:
+  status:
+    project:
+      default:
+        target: auto
+        threshold: 95
+        base: auto
+  precision: 2
+  round: down
+  range: "95...100"
+
+parsers:
+  gcov:
+    branch_detection:
+      conditional: yes
+      loop: yes
+      method: no
+      macro: no
+
+comment:
+  layout: "reach, diff, flags, files"
+  behavior: default
+  require_changes: false
+  require_base: no
+  require_head: yes
+
+ignore:
+  - "test"
+  - "script"
+  - "src/libraries/"
+  - "src/contracts/for-test/"