package chart import ( "testing" assert "github.co/blend/go-sdk/assert" ) func TestTextWrapWord(t *testing.T) { assert := assert.New(t) r, err := PNG(1024, 1024) assert.Nil(err) f, err := GetDefaultFont() assert.Nil(err) basicTextStyle := Style{Font: f, FontSize: 24} output := Text.WrapFitWord(r, "this is a test string", 100, basicTextStyle) assert.NotEmpty(output) assert.Len(output, 3) for _, line := range output { basicTextStyle.WriteToRenderer(r) lineBox := r.MeasureText(line) assert.True(lineBox.Width() < 100, line+": "+lineBox.String()) } assert.Equal("this is", output[0]) assert.Equal("a test", output[1]) assert.Equal("string", output[2]) output = Text.WrapFitWord(r, "foo", 100, basicTextStyle) assert.Len(output, 1) assert.Equal("foo", output[0]) // test that it handles newlines. output = Text.WrapFitWord(r, "this\nis\na\ntest\nstring", 100, basicTextStyle) assert.Len(output, 5) // test that it handles newlines and long lines. output = Text.WrapFitWord(r, "this\nis\na\ntest\nstring that is very long", 100, basicTextStyle) assert.Len(output, 8) } func TestTextWrapRune(t *testing.T) { assert := assert.New(t) r, err := PNG(1024, 1024) assert.Nil(err) f, err := GetDefaultFont() assert.Nil(err) basicTextStyle := Style{Font: f, FontSize: 24} output := Text.WrapFitRune(r, "this is a test string", 150, basicTextStyle) assert.NotEmpty(output) assert.Len(output, 2) assert.Equal("this is a t", output[0]) assert.Equal("est string", output[1]) }