make: enable per-package coverage checking

.gitignore

@@ -26,13 +26,16 @@ cmd/tapd/tapd
 
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
+coverage.*
 
 # Sed backup files.
 *.bak
 
 # Editor configs.
 *.idea
 *.iml
+*.code-workspace
+.vscode/
 
 # Dependency directories (remove the comment below to include it)
 vendor/

Makefile

@@ -162,7 +162,7 @@ unit-trace:
 
 unit-cover: $(GOACC_BIN)
 	@$(call print, "Running unit coverage tests.")
-	$(GOACC_BIN) $(GOLIST_COVER)
+	$(GOACC); $(COVER_HTML)
 
 unit-race:
 	@$(call print, "Running unit race tests.")

make/testing_flags.mk

@@ -5,6 +5,7 @@ LOG_TAGS =
 TEST_FLAGS =
 ITEST_FLAGS = -logoutput
 COVER_PKG = $$(go list -deps -tags="$(DEV_TAGS)" ./... | grep '$(PKG)' | grep -v lnrpc)
+COVER_HTML = go tool cover -html=coverage.txt -o coverage.html
 POSTGRES_START_DELAY = 5
 
 # If rpc option is set also add all extra RPC tags to DEV_TAGS
@@ -112,5 +113,8 @@ endif
 # Construct the integration test command with the added build flags.
 ITEST_TAGS := $(DEV_TAGS) $(RPC_TAGS) integration itest $(backend)
 
+# Construct the coverage test command path with the added build flags.
+GOACC := $(GOACC_BIN) $(COVER_PKG) -- -tags="$(DEV_TAGS) $(LOG_TAGS)" $(TEST_FLAGS)
+
 # Construct the load test command with the added build flags.
 LOADTEST_TAGS := $(DEV_TAGS) $(RPC_TAGS) loadtest