fix truncation

pkg/utils/formatting_test.go

@@ -58,7 +58,6 @@ func TestGetPaddedDisplayStrings(t *testing.T) {
 	}
 }
 
-// TestGetPadWidths is a function.
 func TestGetPadWidths(t *testing.T) {
 	type scenario struct {
 		input    [][]string
@@ -91,3 +90,75 @@ func TestGetPadWidths(t *testing.T) {
 		}
 	}
 }
+
+func TestTruncateWithEllipsis(t *testing.T) {
+	// will need to check chinese characters as well
+	// important that we have a three dot ellipsis within the limit
+	type scenario struct {
+		str      string
+		limit    int
+		expected string
+	}
+
+	scenarios := []scenario{
+		{
+			"hello world !",
+			1,
+			".",
+		},
+		{
+			"hello world !",
+			2,
+			"..",
+		},
+		{
+			"hello world !",
+			3,
+			"...",
+		},
+		{
+			"hello world !",
+			4,
+			"h...",
+		},
+		{
+			"hello world !",
+			5,
+			"he...",
+		},
+		{
+			"hello world !",
+			12,
+			"hello wor...",
+		},
+		{
+			"hello world !",
+			13,
+			"hello world !",
+		},
+		{
+			"hello world !",
+			14,
+			"hello world !",
+		},
+		{
+			"大大大大",
+			5,
+			"大...",
+		},
+		{
+			"大大大大",
+			2,
+			"..",
+		},
+		{
+			"大大大大",
+			0,
+			"",
+		},
+	}
+
+	for _, s := range scenarios {
+		assert.EqualValues(t, s.expected, TruncateWithEllipsis(s.str, s.limit))
+	}
+}