[+] make built-in 100% tasks

internal/tasks/tasks.go

@@ -1,6 +1,7 @@
 package tasks
 
 import (
+	"errors"
 	"fmt"
 	"strconv"
 	"time"
@@ -22,8 +23,12 @@ func ExecuteTask(name string, paramValues []string) error {
 	if len(paramValues) == 0 {
 		paramValues = append(paramValues, "")
 	}
+	f := Tasks[name]
+	if f == nil {
+		return errors.New("No built-in task found: " + name)
+	}
 	for _, val := range paramValues {
-		err := Tasks[name](val)
+		err := f(val)
 		if err != nil {
 			return err
 		}

internal/tasks/tasks_internal_test.go → internal/tasks/tasks_test.go

@@ -17,3 +17,19 @@ func TestDownloadFile(t *testing.T) {
 	assert.NoError(t, taskDownloadFile(`{"workersnum": 0, "fileurls": ["http://foo.bar"], "destpath": "." }`),
 		"Downlod with correct json input should succeed")
 }
+
+func TestNoOp(t *testing.T) {
+	assert.NoError(t, taskNoOp("foo"))
+}
+
+func TestTaskSleep(t *testing.T) {
+	assert.NoError(t, taskSleep("1"))
+	assert.Error(t, taskSleep("foo"))
+}
+
+func TestExecuteTask(t *testing.T) {
+	assert.Error(t, ExecuteTask("foo", []string{}))
+	assert.Error(t, ExecuteTask("Sleep", []string{"foo"}))
+	assert.NoError(t, ExecuteTask("NoOp", []string{}))
+	assert.NoError(t, ExecuteTask("NoOp", []string{"foo", "bar"}))
+}