fix: *string(nil) not equal &string

[jiuker]

fix: *string(nil) not equal &string("")

func TestRequired(t *testing.T) {
	empty := ""
	a := struct {
		A *string
	}{
		A: &empty,
	}
	t.Log(Required("A", "a", a.A))
	t.Log(BeforeRequired("A", "a", a.A))
}

=== RUN   TestRequired
    require_test.go:14: A in a is required
    require_test.go:15: <nil>
--- PASS: TestRequired (0.00s)
PASS

[youyuanwu]

Can you add the test case in the test file?

[jiuker]

@youyuanwu I put the UT now. Reivew plz.

[jiuker]

@youyuanwu Looks like workflow failed. But it doesn't feel like it has anything to do with the pr I submitted.

[youyuanwu]

Master branch ci is working now. go version is updated as well. You can rebase.

[jiuker]

@youyuanwu cc

[codecov]

Codecov Report

Merging #152 (1621beb) into master (c9f1d67) will decrease coverage by 0.07%.
The diff coverage is 80.00%.

@@            Coverage Diff             @@
##           master     #152      +/-   ##
==========================================
- Coverage   90.73%   90.66%   -0.07%     
==========================================
  Files          22       22              
  Lines        2979     2990      +11     
==========================================
+ Hits         2703     2711       +8     
- Misses        224      226       +2     
- Partials       52       53       +1     

Files Changed	Coverage Δ
values.go	98.32% <80.00%> (-0.98%)	⬇️

[jiuker]

@casualjim will I do more tests for code cover?

[wawaka]

this should be reverted as it breaks validation completely @youyuanwu