Checks format of console.timeEnd output

Running test: zero
js: 0ms
timeEnd: 0ms

Running test: verySmall
js: 1e-15ms
timeEnd: 1e-15ms

Running test: small
js: 0.001ms
timeEnd: 0.001ms

Running test: regular
js: 1.2345ms
timeEnd: 1.2345ms

Running test: big
js: 10000.2345ms
timeEnd: 10000.2345ms

Running test: veryBig
js: 1000000000000000.2ms
timeEnd: 1000000000000000.2ms

Running test: huge
js: 1e+42ms
timeEnd: 1e+42ms

Running test: undefinedAsLabel
js: 1ms
default: 1ms

Running test: emptyAsLabel
js: 1ms
default: 1ms