add clifmt/colors minimal test

internal/clifmt/colors_test.go

@@ -0,0 +1,54 @@
+package clifmt
+
+import (
+	"testing"
+)
+
+func escape(in string) string {
+
+	out := make([]rune, 0)
+
+	for _, char := range in {
+		if char == '\n' {
+			out = append(out, []rune("\\n")...)
+		} else if char == '\r' {
+			out = append(out, []rune("\\r")...)
+		} else if char == '\t' {
+			out = append(out, []rune("\\t")...)
+		} else if char == '\033' {
+			out = append(out, []rune("\\033")...)
+		} else {
+			out = append(out, char)
+		}
+	}
+
+	return string(out)
+}
+
+func TestColoring(t *testing.T) {
+
+	tests := []struct {
+		Text   string
+		Color  byte
+		Bold   bool
+		Expect string
+	}{
+		{"any text", 0, false, "\033[0;0many text\033[0m"},
+		{"any text", 1, false, "\033[0;1many text\033[0m"},
+		{"any text", 32, false, "\033[0;32many text\033[0m"},
+
+		{"any text", 0, true, "\033[1;0many text\033[0m"},
+		{"any text", 1, true, "\033[1;1many text\033[0m"},
+		{"any text", 32, true, "\033[1;32many text\033[0m"},
+	}
+
+	for i, test := range tests {
+
+		colored := Color(test.Color, test.Text, test.Bold)
+		if colored != test.Expect {
+			t.Errorf("[%d] expected '%s', got '%s'", i, escape(test.Expect), escape(colored))
+		}
+
+	}
+
+}

internal/clifmt/symbols.go

@@ -92,24 +92,3 @@ func displaySize(s string) int {
 
 	return size
 }
-
-func escape(in string) string {
-
-	out := make([]rune, 0)
-
-	for _, char := range in {
-		if char == '\n' {
-			out = append(out, []rune("\\n")...)
-		} else if char == '\r' {
-			out = append(out, []rune("\\r")...)
-		} else if char == '\t' {
-			out = append(out, []rune("\\t")...)
-		} else if char == '\033' {
-			out = append(out, []rune("\\033")...)
-		} else {
-			out = append(out, char)
-		}
-	}
-
-	return string(out)
-}