Migrate to codecov.io (oras-project#450)

Signed-off-by: Juncheng Zhu <[email protected]>

.github/.codecov.yml

@@ -0,0 +1,5 @@
+coverage:
+  status:
+    project:
+      default:
+        target: 60%

.github/workflows/build.yml

@@ -28,9 +28,5 @@ jobs:
         run: make test
       - name: Check Version
         run: bin/linux/amd64/oras version
-      - name: Upload Coverage Report
-        uses: actions/upload-artifact@master
-        with:
-          name: oras-coverage-report-${{ github.sha }}
-          path: .cover/
-        if: always()
+      - name: Upload coverage to codecov.io
+        uses: codecov/codecov-action@v3

.gitignore

@@ -19,9 +19,7 @@ debug
 .idea
 
 # Custom
-.cover/
-.test/
-hello.txt
+coverage.txt
 bin/
 dist/
 *.tar.gz

Makefile

@@ -19,7 +19,7 @@ LDFLAGS += -X $(PROJECT_PKG)/internal/version.GitTreeState=${GIT_DIRTY}
 
 .PHONY: test
 test: vendor check-encoding
-	./scripts/test.sh
+	go test -race -v -coverprofile=coverage.txt -covermode=atomic ./...
 
 .PHONY: covhtml
 covhtml:

README.md

@@ -1,6 +1,7 @@
 # ORAS CLI
 
 [![Build Status](https://github.com/oras-project/oras/actions/workflows/build.yml/badge.svg?event=push)](https://github.com/oras-project/oras/actions/workflows/build.yml?query=workflow%3Abuild+event%3Apush)
+[![codecov](https://codecov.io/gh/oras-project/oras/branch/main/graph/badge.svg)](https://codecov.io/gh/oras-project/oras)
 
 
 ![ORAS](https://github.com/oras-project/oras-www/raw/main/docs/assets/images/oras.png)