feat(coverage): Add simple coverage (#2067)

* Add test aggregator to all directories.
* Implement coverage script.

.gitignore

@@ -57,3 +57,10 @@ nimbus-build-system.paths
 *.sqlite3-wal
 
 /examples/nodejs/build/
+
+# Coverage
+coverage_html_report/
+*.info
+
+# Wildcard
+*.ignore.*

scripts/run_cov.sh

@@ -0,0 +1,52 @@
+#!/bin/sh
+
+# Check if env.sh has been loaded, or if this file is being ran from it.
+# Using NIMC as a proxy for this, as it's defined in the nimbus-build-system's env.sh.
+if [ -z "$NIMC" ]
+then
+    echo "[ERROR] This tool can only be ran from the Nimbus environment. Either:" 
+    echo "- Source env.sh 'source /path/to/env.sh', and then run the script directly '/path/to/scripts/run_cov.sh'." 
+    echo "- Run this script as a parameter to env.sh '/path/to/env.sh /path/to/scripts/run_cov.sh'."
+    exit 1
+fi
+
+# Check for lcov tool
+which lcov 1>/dev/null 2>&1
+if [ $? != 0 ]
+then
+    echo "[ERROR] You need to have lcov installed in order to generate the test coverage report."
+    exit 2
+fi
+
+SCRIPT_PATH=$(dirname "$(realpath -s "$0")")
+REPO_ROOT=$(dirname $SCRIPT_PATH)
+generated_not_to_break_here="$REPO_ROOT/generated_not_to_break_here"
+
+if [ -f $generated_not_to_break_here ]
+then
+    echo "The file '$generated_not_to_break_here' already exists. Do you want to continue? (y/n)"
+    read -r response
+    if [ "$response" != "y" ]
+    then
+        exit 3
+    fi
+fi
+
+output_directory="$REPO_ROOT/coverage_html_report"
+base_filepath="$REPO_ROOT/tests/test_all"
+nim_filepath=$base_filepath.nim
+info_filepath=$base_filepath.info
+
+# Workaround a nim bug. See https://github.com/nim-lang/Nim/issues/12376
+touch $generated_not_to_break_here
+
+# Generate the coverage report
+nim --debugger:native --passC:--coverage --passL:--coverage --passL:librln_v0.3.4.a --passL:-lm c $nim_filepath
+lcov --base-directory . --directory . --zerocounters -q
+$base_filepath
+lcov --base-directory . --directory . --include "*/waku/**" --include "*/apps/**" --exclude "*/vendor/**" -c -o $info_filepath
+genhtml -o $output_directory $info_filepath
+
+# Cleanup
+rm -rf $info_filepath $base_filepath nimcache
+rm $generated_not_to_break_here

tests/all_tests_common.nim

@@ -1,9 +1,3 @@
 {.used.}
 
-# Waku common test suite
-import
-  ./common/test_envvar_serialization,
-  ./common/test_confutils_envvar,
-  ./common/test_protobuf_validation,
-  ./common/test_enr_builder,
-  ./common/test_sqlite_migrations
+import ./common/test_all

tests/all_tests_wakunode2.nim

@@ -1,6 +1,3 @@
 ## Wakunode2
 
-import
-  ./wakunode2/test_app,
-  ./wakunode2/test_validators
-
+import ./wakunode2/test_all

tests/common/test_all.nim

@@ -0,0 +1,7 @@
+import
+  ./test_base64_codec,
+  ./test_confutils_envvar,
+  ./test_enr_builder,
+  ./test_envvar_serialization,
+  ./test_protobuf_validation,
+  ./test_sqlite_migrations

tests/test_all.nim

@@ -0,0 +1,6 @@
+{.used.}
+
+import
+  ./all_tests_common,
+  ./all_tests_waku,
+  ./all_tests_wakunode2

tests/waku_archive/test_all.nim

@@ -0,0 +1,13 @@
+{.used.}
+
+import
+  ./test_driver_postgres_query,
+  ./test_driver_postgres,
+  ./test_driver_queue_index,
+  ./test_driver_queue_pagination,
+  ./test_driver_queue_query,
+  ./test_driver_queue,
+  ./test_driver_sqlite_query,
+  ./test_driver_sqlite,
+  ./test_retention_policy,
+  ./test_waku_archive

tests/waku_core/test_all.nim

@@ -0,0 +1,9 @@
+{.used.}
+
+import 
+  ./test_message_digest,
+  ./test_namespaced_topics,
+  ./test_peers,
+  ./test_published_address,
+  ./test_sharding,
+  ./test_time

tests/waku_filter_v2/test_all.nim

@@ -0,0 +1,6 @@
+{.used.}
+
+import
+  ./test_waku_client,
+  ./test_waku_filter_protocol,
+  ./test_waku_filter

tests/waku_relay/test_all.nim

@@ -0,0 +1,5 @@
+{.used.}
+
+import 
+  ./test_waku_relay,
+  ./test_wakunode_relay

tests/waku_rln_relay/test_all.nim

@@ -0,0 +1,7 @@
+{.used.}
+
+import
+  ./test_rln_group_manager_onchain,
+  ./test_rln_group_manager_static,
+  ./test_waku_rln_relay,
+  ./test_wakunode_rln_relay

tests/waku_store/test_all.nim

@@ -0,0 +1,7 @@
+{.used.}
+
+import
+  ./test_resume,
+  ./test_rpc_codec,
+  ./test_waku_store,
+  ./test_wakunode_store

tests/wakunode2/test_all.nim

@@ -0,0 +1,5 @@
+{.used.}
+
+import
+  ./test_app,
+  ./test_validators

tests/wakunode_jsonrpc/test_all.nim

@@ -0,0 +1,8 @@
+{.used.}
+
+import
+  ./test_jsonrpc_admin,
+  ./test_jsonrpc_debug,
+  ./test_jsonrpc_filter,
+  ./test_jsonrpc_relay,
+  ./test_jsonrpc_store

tests/wakunode_rest/test_all.nim

@@ -0,0 +1,12 @@
+{.used.}
+
+import
+  ./test_rest_debug_serdes,
+  ./test_rest_debug,
+  ./test_rest_filter,
+  ./test_rest_health,
+  ./test_rest_legacy_filter,
+  ./test_rest_relay_serdes,
+  ./test_rest_relay,
+  ./test_rest_serdes,
+  ./test_rest_store