test: handle everything with go test

Before this patch, it was required to set up test tarantool processes
manually (and also handle their dependencies, like making working dir).
You can see an example in CI scripts.

This patch introduces go helpers for starting a tarantool process and
installing rock requirements with tarantoolctl. Helpers are based on
`os/exec` calls. Retries to connect test tarantool instance handled
explicitly, see #136.

Setup scripts are reworked to use environment variables to configure
`box.cfg`. Listen port is set in the end of script so it is possible
to connect only if every other thing was set up already.

Every test is reworked to start a tarantool process (or processes) in
TestMain before test run. Now it is possible to run a test with plain
`go test`. Queue tests changes may be broken because it is impossible
to verify before #115 is fixed.

Closes #107

.github/workflows/reusable_testing.yml

@@ -40,35 +40,21 @@ jobs:
 
       - name: Run base tests
         run: |
-          mkdir snap xlog
-          TNT_PID=$(tarantool ./config.lua > tarantool.log 2>&1 & echo $!)
           go clean -testcache && go test -v
-          kill $TNT_PID
 
 # TODO(ylobankov): Uncomment this when tarantool/go-tarantool#115 is resolved.
 #      - name: Run queue tests
 #        working-directory: ./queue
 #        run: |
-#          mkdir snap xlog
-#          tarantoolctl rocks install queue 1.1.0
-#          TNT_PID=$(tarantool ./config.lua > tarantool.log 2>&1 & echo $!)
 #          go clean -testcache && go test -v
-#          kill $TNT_PID
 
       - name: Run uuid tests
         working-directory: ./uuid
         run: |
-          mkdir snap xlog
-          TNT_PID=$(tarantool ./config.lua > tarantool.log 2>&1 & echo $!)
           go clean -testcache && go test -v
-          kill $TNT_PID
         if: ${{ !startsWith(env.TNT_VERSION, 'Tarantool 1.10') }}
 
       - name: Run multi tests
         working-directory: ./multi
         run: |
-          mkdir -p m1/{snap,xlog} m2/{snap,xlog}
-          TNT_PID_1=$(tarantool ./config_m1.lua > tarantool_m1.log 2>&1 & echo $!)
-          TNT_PID_2=$(tarantool ./config_m2.lua > tarantool_m2.log 2>&1 & echo $!)
           go clean -testcache && go test -v
-          kill $TNT_PID_1 $TNT_PID_2

.github/workflows/testing.yml

@@ -41,35 +41,21 @@ jobs:
 
       - name: Run base tests
         run: |
-          mkdir snap xlog
-          TNT_PID=$(tarantool ./config.lua > tarantool.log 2>&1 & echo $!)
           go clean -testcache && go test -v
-          kill $TNT_PID
 
 # TODO(ylobankov): Uncomment this when tarantool/go-tarantool#115 is resolved.
 #      - name: Run queue tests
 #        working-directory: ./queue
 #        run: |
-#          mkdir snap xlog
-#          tarantoolctl rocks install queue 1.1.0
-#          TNT_PID=$(tarantool ./config.lua > tarantool.log 2>&1 & echo $!)
 #          go clean -testcache && go test -v
-#          kill $TNT_PID
 
       - name: Run uuid tests
         working-directory: ./uuid
         run: |
-          mkdir snap xlog
-          TNT_PID=$(tarantool ./config.lua > tarantool.log 2>&1 & echo $!)
           go clean -testcache && go test -v
-          kill $TNT_PID
         if: ${{ matrix.tarantool != 1.10 }}
 
       - name: Run multi tests
         working-directory: ./multi
         run: |
-          mkdir -p m1/{snap,xlog} m2/{snap,xlog}
-          TNT_PID_1=$(tarantool ./config_m1.lua > tarantool_m1.log 2>&1 & echo $!)
-          TNT_PID_2=$(tarantool ./config_m2.lua > tarantool_m2.log 2>&1 & echo $!)
           go clean -testcache && go test -v
-          kill $TNT_PID_1 $TNT_PID_2

.gitignore

@@ -1,5 +1,5 @@
 *.DS_Store
 *.swp
 .idea/
-snap
-xlog
+work_dir*
+.rocks

config.lua

@@ -1,7 +1,7 @@
+-- Do not set listen for now so connector won't be
+-- able to send requests until everything is configured.
 box.cfg{
-    listen = 3013,
-    wal_dir='xlog',
-    snap_dir='snap',
+    work_dir = os.getenv("TARANTOOL_WORK_DIR"),
 }
 
 box.once("init", function()
@@ -56,7 +56,10 @@ function simple_incr(a)
 end
 
 box.space.test:truncate()
-local console = require 'console'
-console.listen '0.0.0.0:33015'
 
 --box.schema.user.revoke('guest', 'read,write,execute', 'universe')
+
+-- Set listen only when every other thing is configured.
+box.cfg{
+    listen = os.getenv("TARANTOOL_LISTEN"),
+}

multi/config.lua

@@ -0,0 +1,19 @@
+local nodes_load = require("config_load_nodes")
+
+-- Do not set listen for now so connector won't be
+-- able to send requests until everything is configured.
+box.cfg{
+    work_dir = os.getenv("TARANTOOL_WORK_DIR"),
+}
+
+get_cluster_nodes = nodes_load.get_cluster_nodes
+
+box.once("init", function()
+    box.schema.user.create('test', { password = 'test' })
+    box.schema.user.grant('test', 'read,write,execute', 'universe')
+end)
+
+-- Set listen only when every other thing is configured.
+box.cfg{
+    listen = os.getenv("TARANTOOL_LISTEN"),
+}

multi/multi_test.go

@@ -1,10 +1,14 @@
 package multi
 
 import (
+	"log"
+	"os"
+	"os/exec"
 	"testing"
 	"time"
 
 	"github.com/tarantool/go-tarantool"
+	"github.com/tarantool/go-tarantool/test_helpers"
 )
 
 var server1 = "127.0.0.1:3013"
@@ -204,3 +208,49 @@ func TestRefresh(t *testing.T) {
 		t.Error("Expect to get data after reconnect")
 	}
 }
+
+// See https://stackoverflow.com/questions/27629380/how-to-exit-a-go-program-honoring-deferred-calls
+// on issue with defer + os.Exit.
+func runTestMain(m *testing.M) int {
+	var err error
+	var cmd1, cmd2 *exec.Cmd
+
+	cmd1, err = test_helpers.StartTarantool(test_helpers.StartOpts{
+		Command:      "config.lua",
+		Server:       server1,
+		WorkDir:      "work_dir1",
+		User:         connOpts.User,
+		Pass:         connOpts.Pass,
+		WaitStart:    100 * time.Millisecond,
+		ConnectRetry: 3,
+		RetryTimeout: 200 * time.Millisecond,
+	})
+	defer test_helpers.StopTarantool(cmd1)
+
+	if err != nil {
+		log.Panic("Failed to prepare test tarantool: ", err)
+	}
+
+	cmd2, err = test_helpers.StartTarantool(test_helpers.StartOpts{
+		Command:      "config.lua",
+		Server:       server2,
+		WorkDir:      "work_dir2",
+		User:         connOpts.User,
+		Pass:         connOpts.Pass,
+		WaitStart:    100 * time.Millisecond,
+		ConnectRetry: 3,
+		RetryTimeout: 200 * time.Millisecond,
+	})
+	defer test_helpers.StopTarantool(cmd2)
+
+	if err != nil {
+		log.Panic("Failed to prepare test tarantool: ", err)
+	}
+
+	return m.Run()
+}
+
+func TestMain(m *testing.M) {
+	code := runTestMain(m)
+	os.Exit(code)
+}

queue/config.lua

@@ -1,9 +1,9 @@
-queue = require 'queue'
+queue = require('queue')
 
+-- Do not set listen for now so connector won't be
+-- able to send requests until everything is configured.
 box.cfg{
-    listen = 3013,
-    wal_dir='xlog',
-    snap_dir='snap',
+    work_dir = os.getenv("TARANTOOL_WORK_DIR"),
 }
 
 box.once("init", function()
@@ -27,3 +27,8 @@ box.schema.user.grant('test', 'read,write', 'space', '_queue_consumers')
 box.schema.user.grant('test', 'read,write', 'space', '_priv')
 box.schema.user.grant('test', 'read,write', 'space', '_queue_taken')
 end)
+
+-- Set listen only when every other thing is configured.
+box.cfg{
+    listen = os.getenv("TARANTOOL_LISTEN"),
+}

queue/queue_test.go

@@ -2,12 +2,15 @@ package queue_test
 
 import (
 	"fmt"
+	"log"
 	"math"
+	"os"
 	"testing"
 	"time"
 
 	. "github.com/tarantool/go-tarantool"
 	"github.com/tarantool/go-tarantool/queue"
+	"github.com/tarantool/go-tarantool/test_helpers"
 	"gopkg.in/vmihailenco/msgpack.v2"
 )
 
@@ -818,3 +821,38 @@ func TestUtube_Put(t *testing.T) {
 		t.Fatalf("Blocking time is less than expected: actual = %.2fs, expected = 1s", end.Sub(start).Seconds())
 	}
 }
+
+// See https://stackoverflow.com/questions/27629380/how-to-exit-a-go-program-honoring-deferred-calls
+// on issue with defer + os.Exit.
+func runTestMain(m *testing.M) int {
+	if err := os.RemoveAll(".rocks"); err != nil {
+		log.Panic(err)
+	}
+
+	if err := test_helpers.InstallRock("queue", "1.1.0"); err != nil {
+		log.Panic(err)
+	}
+
+	cmd, err := test_helpers.StartTarantool(test_helpers.StartOpts{
+		Command:      "config.lua",
+		Server:       server,
+		WorkDir:      "work_dir",
+		User:         opts.User,
+		Pass:         opts.Pass,
+		WaitStart:    100 * time.Millisecond,
+		ConnectRetry: 3,
+		RetryTimeout: 200 * time.Millisecond,
+	})
+	defer test_helpers.StopTarantool(cmd)
+
+	if err != nil {
+		log.Panic("Failed to prepare test tarantool: ", err)
+	}
+
+	return m.Run()
+}
+
+func TestMain(m *testing.M) {
+	code := runTestMain(m)
+	os.Exit(code)
+}

tarantool_test.go

@@ -2,12 +2,15 @@ package tarantool_test
 
 import (
 	"fmt"
+	"log"
+	"os"
 	"strings"
 	"sync"
 	"testing"
 	"time"
 
 	. "github.com/tarantool/go-tarantool"
+	"github.com/tarantool/go-tarantool/test_helpers"
 	"gopkg.in/vmihailenco/msgpack.v2"
 )
 
@@ -1005,3 +1008,30 @@ func TestComplexStructs(t *testing.T) {
 		return
 	}
 }
+
+// See https://stackoverflow.com/questions/27629380/how-to-exit-a-go-program-honoring-deferred-calls
+// on issue with defer + os.Exit.
+func runTestMain(m *testing.M) int {
+	cmd, err := test_helpers.StartTarantool(test_helpers.StartOpts{
+		Command:      "config.lua",
+		Server:       server,
+		WorkDir:      "work_dir",
+		User:         opts.User,
+		Pass:         opts.Pass,
+		WaitStart:    100 * time.Millisecond,
+		ConnectRetry: 3,
+		RetryTimeout: 200 * time.Millisecond,
+	})
+	defer test_helpers.StopTarantool(cmd)
+
+	if err != nil {
+		log.Panic("Failed to prepare test tarantool: ", err)
+	}
+
+	return m.Run()
+}
+
+func TestMain(m *testing.M) {
+	code := runTestMain(m)
+	os.Exit(code)
+}