Reorganize file structure

cmd/micro/util/util_test.go

@@ -0,0 +1,33 @@
+package util
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestStringWidth(t *testing.T) {
+	bytes := []byte("\tPot să \tmănânc sticlă și ea nu mă rănește.")
+
+	n := StringWidth(bytes, 23, 4)
+	assert.Equal(t, 26, n)
+}
+
+func TestSliceVisualEnd(t *testing.T) {
+	s := []byte("\thello")
+	slc, n := SliceVisualEnd(s, 2, 4)
+	assert.Equal(t, []byte("\thello"), slc)
+	assert.Equal(t, 2, n)
+
+	slc, n = SliceVisualEnd(s, 1, 4)
+	assert.Equal(t, []byte("\thello"), slc)
+	assert.Equal(t, 1, n)
+
+	slc, n = SliceVisualEnd(s, 4, 4)
+	assert.Equal(t, []byte("hello"), slc)
+	assert.Equal(t, 0, n)
+
+	slc, n = SliceVisualEnd(s, 5, 4)
+	assert.Equal(t, []byte("ello"), slc)
+	assert.Equal(t, 0, n)
+}