fix(chart): use quote for test labels and fix e2e tests #45

All 105 tests pass, 4 skipped in 1m 10s

  26 files ±0   26 suites ±0 1m 10s ⏱️ +13s
109 tests ±0 105 ✔️ ±0 4 💤 ±0 0 ❌ ±0
110 runs ±0 106 ✔️ ±0 4 💤 ±0 0 ❌ ±0

Results for commit bd9323e. ± Comparison against earlier commit 64e4087.