Add codecov yml, add baseline report, add badge

.circleci/config.yml

@@ -41,11 +41,14 @@ jobs:
       - run:
           name: make
           command: cmake --build $IROHA_BUILD -- -j4
+      - run:
+          name: code coverage pre
+          command: cmake --build $IROHA_BUILD --target coverage.init.info
       - run:
           name: run tests
           command: cmake --build $IROHA_BUILD --target test
       - run:
-          name: code coverage
+          name: code coverage post
           command: |
             cmake --build $IROHA_BUILD --target coverage.info
             lcov --list $IROHA_BUILD/coverage.info

.codecov.yml

@@ -0,0 +1,28 @@
+codecov:
+  branch: default
+coverage:
+  range: 50...100
+  status:
+    patch:
+      default:
+        target: 50
+    project:
+      default:
+        target: auto
+        threshold: 0.05
+      cli:
+        target: auto
+        threshold: 0.05
+        paths: "iroha-cli/"
+      daemon:
+        target: auto
+        threshold: 0.05
+        paths: "irohad/"
+      tests:
+        target: auto
+        paths: "test/"
+    changes:
+      default:
+        enabled: no
+comment:
+  layout: "reach, diff, flags, files, footer"

CMakeLists.txt

@@ -23,8 +23,12 @@ if(COVERAGE)
   set(CMAKE_C_FLAGS "--coverage ${CMAKE_C_FLAGS}")
   set(CMAKE_SHARED_LINKER_FLAGS "--coverage ${CMAKE_SHARED_LINKER_FLAGS}")
   set(CMAKE_EXE_LINKER_FLAGS "--coverage ${CMAKE_EXE_LINKER_FLAGS}")
+  add_custom_target(coverage.init.info
+      COMMAND ${LCOV_PROGRAM} -o ${PROJECT_BINARY_DIR}/coverage.init.info -c -i -d ${PROJECT_BINARY_DIR}
+      )
   add_custom_target(coverage.info
       COMMAND ${LCOV_PROGRAM} -o ${PROJECT_BINARY_DIR}/coverage.info -c -d ${PROJECT_BINARY_DIR}
+      COMMAND ${LCOV_PROGRAM} -o ${PROJECT_BINARY_DIR}/coverage.info -a ${PROJECT_BINARY_DIR}/coverage.init.info -a ${PROJECT_BINARY_DIR}/coverage.info
       COMMAND ${LCOV_PROGRAM} -o ${PROJECT_BINARY_DIR}/coverage.info -r ${PROJECT_BINARY_DIR}/coverage.info '/usr*' '${CMAKE_SOURCE_DIR}/external/*'
       )
 endif()

README.md

@@ -4,6 +4,7 @@
 [![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/960/badge)](https://bestpractices.coreinfrastructure.org/projects/960)
 [![Codacy Badge](https://api.codacy.com/project/badge/Grade/4d8edb74d4954c76a4656a9e109dbc4e)](https://www.codacy.com/app/neewy/iroha?utm_source=github.com&utm_medium=referral&utm_content=hyperledger/iroha&utm_campaign=Badge_Grade)
 [![CircleCI](https://circleci.com/gh/hyperledger/iroha/tree/master.svg?style=svg)](https://circleci.com/gh/hyperledger/iroha/tree/master)
+[![codecov](https://codecov.io/gh/hyperledger/iroha/branch/master/graph/badge.svg)](https://codecov.io/gh/hyperledger/iroha)
 
 Blockchain platform Hyperledger Iroha is designed for simple creation and management of assets. This is a distributed ledger of transactions.