feat: local coverage report

Generate single coverage report for `interchaintest` and
`manifest-ledger`. Generated Protobuf files are excluded from coverage
metric.

.coverageignore

@@ -0,0 +1,4 @@
+*.pb.go
+*.pb.gw.go
+*.pulsar.go
+*_simulation.go

Makefile

@@ -128,7 +128,7 @@ endif
 .PHONY: get-heighliner local-image
 
 #################
-###   Build   ###
+###   Test    ###
 #################
 
 test:
@@ -141,6 +141,27 @@ test-integration:
 
 .PHONY: test test-integration
 
+#################
+###   Test    ###
+#################
+
+coverage: ## Run coverage report
+	@echo "--> Running coverage"
+	@go test -race -cpu=$$(nproc) -covermode=atomic -coverprofile=coverage.out $$(go list ./...) ./interchaintest/... -coverpkg=github.com/liftedinit/manifest-ledger/... > /dev/null 2>&1
+	@echo "--> Running coverage filter"
+	@./scripts/filter-coverage.sh
+	@echo "--> Running coverage report"
+	@go tool cover -func=coverage-filtered.out
+	@echo "--> Running coverage html"
+	@go tool cover -html=coverage-filtered.out -o coverage.html
+	@echo "--> Coverage report available at coverage.html"
+	@echo "--> Cleaning up coverage files"
+	@rm coverage.out
+	@echo "--> Running coverage complete"
+
+.PHONY: coverage
+
+
 ##################
 ###  Protobuf  ###
 ##################

scripts/filter-coverage.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+coverage_profile="coverage.out"
+filtered_coverage_profile="coverage-filtered.out"
+exclusion_file=".coverageignore"
+
+cp "$coverage_profile" "$filtered_coverage_profile"
+
+while read -r pattern; do
+  files_to_exclude=$(find . -type f -regex ".*$pattern")
+  for file in $files_to_exclude; do
+    relative_path=$(realpath --relative-to="." "$file")
+    grep -v "$relative_path" "$filtered_coverage_profile" > temp_coverage.out && mv temp_coverage.out "$filtered_coverage_profile"
+  done
+done < "$exclusion_file"