refactor: make measurex depend on measurexlite (#892)

This diff makes `measurex` depend on `measurexlite` rather than the other way around.

While there, add unit tests.

Closes https://github.com/ooni/probe/issues/2240

internal/measurexlite/logger_test.go

@@ -0,0 +1,115 @@
+package measurexlite
+
+import (
+	"fmt"
+	"io"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/ooni/probe-cli/v3/internal/model/mocks"
+)
+
+func TestNewOperationLogger(t *testing.T) {
+	t.Run("for short operation and no error", func(t *testing.T) {
+		var (
+			lines []string
+			mu    sync.Mutex
+		)
+		logger := &mocks.Logger{
+			MockInfof: func(format string, v ...interface{}) {
+				line := fmt.Sprintf(format, v...)
+				mu.Lock()
+				lines = append(lines, line)
+				mu.Unlock()
+			},
+		}
+		ol := NewOperationLogger(logger, "antani%d", 0)
+		ol.Stop(nil)
+		if len(lines) != 1 {
+			t.Fatal("unexpected number of lines")
+		}
+		if lines[0] != "antani0... ok" {
+			t.Fatal("unexpected first line", lines[0])
+		}
+	})
+
+	t.Run("for short operation and error", func(t *testing.T) {
+		var (
+			lines []string
+			mu    sync.Mutex
+		)
+		logger := &mocks.Logger{
+			MockInfof: func(format string, v ...interface{}) {
+				line := fmt.Sprintf(format, v...)
+				mu.Lock()
+				lines = append(lines, line)
+				mu.Unlock()
+			},
+		}
+		ol := NewOperationLogger(logger, "antani%d", 0)
+		ol.Stop(io.EOF)
+		if len(lines) != 1 {
+			t.Fatal("unexpected number of lines")
+		}
+		if lines[0] != "antani0... EOF" {
+			t.Fatal("unexpected first line", lines[0])
+		}
+	})
+
+	t.Run("for longer operation and no error", func(t *testing.T) {
+		var (
+			lines []string
+			mu    sync.Mutex
+		)
+		logger := &mocks.Logger{
+			MockInfof: func(format string, v ...interface{}) {
+				line := fmt.Sprintf(format, v...)
+				mu.Lock()
+				lines = append(lines, line)
+				mu.Unlock()
+			},
+		}
+		const maxwait = 100 * time.Microsecond
+		ol := newOperationLogger(maxwait, logger, "antani%d", 0)
+		time.Sleep(4 * ol.maxwait)
+		ol.Stop(nil)
+		if len(lines) != 2 {
+			t.Fatal("unexpected number of lines")
+		}
+		if lines[0] != "antani0... in progress" {
+			t.Fatal("unexpected first line", lines[0])
+		}
+		if lines[1] != "antani0... ok" {
+			t.Fatal("unexpected first line", lines[0])
+		}
+	})
+
+	t.Run("for longer operation and error", func(t *testing.T) {
+		var (
+			lines []string
+			mu    sync.Mutex
+		)
+		logger := &mocks.Logger{
+			MockInfof: func(format string, v ...interface{}) {
+				line := fmt.Sprintf(format, v...)
+				mu.Lock()
+				lines = append(lines, line)
+				mu.Unlock()
+			},
+		}
+		const maxwait = 100 * time.Microsecond
+		ol := newOperationLogger(maxwait, logger, "antani%d", 0)
+		time.Sleep(4 * ol.maxwait)
+		ol.Stop(io.EOF)
+		if len(lines) != 2 {
+			t.Fatal("unexpected number of lines")
+		}
+		if lines[0] != "antani0... in progress" {
+			t.Fatal("unexpected first line", lines[0])
+		}
+		if lines[1] != "antani0... EOF" {
+			t.Fatal("unexpected first line", lines[0])
+		}
+	})
+}