Buffers are now shown (mostly) correctly

senpai must now split on whitespace when drawing

1 files changed, 25 insertions, 0 deletions

diff --git a/ui/width_test.go b/ui/width_test.go
new file mode 100644
index 0000000..ae478ab
--- /dev/null
+++ b/ui/width_test.go
@@ -0,0 +1,25 @@
+package ui
+
+import "testing"
+
+func assertStringWidth(t *testing.T, input string, expected int) {
+	actual := StringWidth(input)
+	if actual != expected {
+		t.Errorf("%q: expected width of %d got %d", input, expected, actual)
+	}
+}
+
+func TestStringWidth(t *testing.T) {
+	assertStringWidth(t, "", 0)
+
+	assertStringWidth(t, "hello", 5)
+	assertStringWidth(t, "\x02hello", 5)
+	assertStringWidth(t, "\x035hello", 5)
+	assertStringWidth(t, "\x0305hello", 5)
+	assertStringWidth(t, "\x0305,0hello", 5)
+	assertStringWidth(t, "\x0305,09hello", 5)
+
+	assertStringWidth(t, "\x0305,hello", 6)
+	assertStringWidth(t, "\x03050hello", 6)
+	assertStringWidth(t, "\x0305,090hello", 6)
+}