ci(codecov): fix diff coverage (#384)

* ci(codecov): fix diff coverage

Signed-off-by: Keisuke Shima <19993104+KeisukeShima@users.noreply.github.com>

* Update codecov.yaml

Co-authored-by: Kenji Miyake <31987104+kenji-miyake@users.noreply.github.com>

Co-authored-by: Kenji Miyake <31987104+kenji-miyake@users.noreply.github.com>

Author: KeisukeShima

.github/workflows/build-and-test-differential.yaml

@@ -47,6 +47,7 @@ jobs:
           files: ${{ steps.test.outputs.coverage-report-files }}
           fail_ci_if_error: false
           verbose: true
+          flags: differential
 
   clang-tidy-differential:
     runs-on: ubuntu-latest

.github/workflows/build-and-test.yaml

@@ -46,3 +46,4 @@ jobs:
           files: ${{ steps.test.outputs.coverage-report-files }}
           fail_ci_if_error: false
           verbose: true
+          flags: total

codecov.yaml

@@ -0,0 +1,22 @@
+coverage:
+  status:
+    project:
+      default:
+        target: auto
+    patch:
+      default:
+        target: auto
+
+comment:
+  show_carryforward_flags: true
+
+flag_management:
+  default_rules:
+    carryforward: true
+    statuses:
+      - name_prefix: project-
+        type: project
+        target: auto
+      - name_prefix: patch-
+        type: patch
+        target: auto