Measure test coverage

Add Makefile for convenient local run. Use Makefile in test CI.
Add luacov dependency and run luatest with coverage.
Keep /tmp for luacov reports.

Based on PR #18 by @no1seman

Author: DifferentialOrange

.github/workflows/test_on_push.yaml

@@ -21,13 +21,10 @@ jobs:
           tarantool-version: ${{ matrix.tarantool-version }}
 
       - name: Install dependencies
-        run: |
-          tarantoolctl rocks install luatest 0.5.5
-          tarantoolctl rocks install luacheck 0.26.0
-          tarantoolctl rocks make
+        run: make .rocks
 
       - name: Run linter
-        run: .rocks/bin/luacheck .
+        run: make lint
 
       - name: Run tests
-        run: .rocks/bin/luatest -v
+        run: make test

.gitignore

@@ -6,7 +6,8 @@
 .doctrees
 __pycache__
 /dev
-/tmp
+/tmp/*
+!/tmp/.keep
 doc
 release
 release-doc
@@ -28,3 +29,4 @@ luacov.*.out*
 *.mo
 .history
 .vscode
+*.rock

.luacov

@@ -0,0 +1,6 @@
+statsfile = 'tmp/luacov.stats.out'
+reportfile = 'tmp/luacov.report.out'
+exclude = {
+    '/test/',
+    '/tmp/',
+}

Makefile

@@ -0,0 +1,30 @@
+SHELL := /bin/bash
+
+.PHONY: .rocks
+.rocks: graphql-scm-1.rockspec Makefile
+		tarantoolctl rocks make
+		tarantoolctl rocks install luatest 0.5.5
+		tarantoolctl rocks install luacov 0.13.0
+		tarantoolctl rocks install luacheck 0.26.0
+
+.PHONY: lint
+lint:
+		if [ ! -d ".rocks" ]; then make .rocks; fi
+		.rocks/bin/luacheck .
+
+.PHONY: test
+test:
+		if [ ! -d ".rocks" ]; then make .rocks; fi
+		rm -f tmp/luacov*
+		.rocks/bin/luatest --verbose --coverage --shuffle group
+		.rocks/bin/luacov . && grep -A999 '^Summary' tmp/luacov.report.out
+
+.PHONY: clean
+clean:
+		rm -rf .rocks
+
+.PHONY: build
+build:	
+		if [ ! -d ".rocks" ]; then make .rocks; fi
+		tarantoolctl rocks make
+		tarantoolctl rocks pack graphql scm-1