(integration tests) support for generating coverage files when execut…

…ing lab as a binary

cmd/issueList_test.go

@@ -20,6 +20,6 @@ func Test_issueList(t *testing.T) {
 
 	issues := strings.Split(string(b), "\n")
 	t.Log(issues)
-	firstIssue := issues[len(issues)-2 : len(issues)-1]
+	firstIssue := issues[len(issues)-4 : len(issues)-3]
 	require.Equal(t, "#1 test issue for lab list", firstIssue[0])
 }

cmd/mrList_test.go

@@ -20,6 +20,6 @@ func Test_mrList(t *testing.T) {
 
 	issues := strings.Split(string(b), "\n")
 	t.Log(issues)
-	firstIssue := issues[len(issues)-2 : len(issues)-1]
+	firstIssue := issues[len(issues)-4 : len(issues)-3]
 	require.Equal(t, "#1 Test MR for lab list", firstIssue[0])
 }

cmd/root_test.go

@@ -21,7 +21,7 @@ func TestMain(m *testing.M) {
 		log.Fatal(err)
 	}
 	os.Chdir(wd)
-	err = exec.Command("go", "build", "-o", "lab_bin").Run()
+	err = exec.Command("go", "test", "-c", "-coverpkg", "./...", "-covermode", "count", "-o", "lab_bin").Run()
 	if err != nil {
 		log.Fatal(err)
 	}

main_test.go

@@ -0,0 +1,17 @@
+package main
+
+// This file is mandatory as otherwise the lab.test binary is not generated correctly.
+import (
+	"flag"
+	"math/rand"
+	"strconv"
+	"testing"
+	"time"
+)
+
+// Test started when the test binary is started. Only calls main.
+func TestLab(t *testing.T) {
+	rand.Seed(time.Now().UnixNano())
+	flag.Set("test.coverprofile", "../coverage-"+strconv.Itoa(int(rand.Uint64()))+".out")
+	main()
+}