Suggest NotEmpty for Positive len

[mmorel-35]

Closes #122

[coveralls]

Pull Request Test Coverage Report for Build 9511868398

Details

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 93.611%

---

Totals
Change from base Build 9431505288:	0.0%
Covered Lines:	2110
Relevant Lines:	2254

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 9511883615

Details

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 93.611%

---

Totals
Change from base Build 9431505288:	0.0%
Covered Lines:	2110
Relevant Lines:	2254

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 9525739279

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 93.611%

---

Totals
Change from base Build 9431505288:	0.0%
Covered Lines:	2110
Relevant Lines:	2254

---

💛 - Coveralls