Test 1.1: check for invalid format string
seq: invalid format string: `foo'

Test 1.2: check for valid format string
bar1.000000
bar2.000000
bar3.000000

Test 1.3: check for invalid increment
seq: zero decrement

Test 1.4: check for first > last
seq: needs negative decrement

Test 1.5: check for increment mismatch
seq: needs positive increment

Test 1.6: check for increment mismatch
seq: needs negative decrement

Test 2.0: single argument (0)
1
0

Test 2.1: single argument (1)
1

Test 2.2: single argument (-1)
1
0
-1

Test 2.3: two arguments (1, 1)
1

Test 2.3: two arguments (1, 2)
1
2

Test 2.3: two arguments (1, -2)
1
0
-1
-2

Test 3.0: check for missing element due to rounding
1
1.1
1.2

Test 3.1: check for missing element due to rounding
0
1e-06
2e-06
3e-06

Test 3.2: check for extra element due to rounding
0.1
1.09

Test 3.3: check for extra element due to rounding check
1.05e+06