feat: colorize http status logs

internal/observability/log_test.go

@@ -34,3 +34,27 @@ func TestFormatLogEntryFormatsHTTPRequestCompactly(t *testing.T) {
 		t.Fatalf("line should omit loopback ip: %q", line)
 	}
 }
+
+func TestFormatHTTPStatusColorsByStatusFamily(t *testing.T) {
+	previousColorLogs := colorLogs
+	colorLogs = true
+	t.Cleanup(func() {
+		colorLogs = previousColorLogs
+	})
+
+	tests := map[any]string{
+		101:       ansiStatusBlue + "101" + ansiReset,
+		200:       ansiGreen + "200" + ansiReset,
+		302:       ansiYellow + "302" + ansiReset,
+		404:       ansiOrange + "404" + ansiReset,
+		500:       ansiRed + "500" + ansiReset,
+		"unknown": "unknown",
+	}
+
+	for input, want := range tests {
+		got := formatHTTPStatus(input)
+		if got != want {
+			t.Fatalf("formatHTTPStatus(%v) = %q, want %q", input, got, want)
+		}
+	}
+}