fix issue in unit test case og grand

.travis.yml

@@ -35,7 +35,7 @@ before_script:
 - psql -c 'create database travis_ci_test;' -U postgres
 
 script:
-#- GOARCH=386 go test -v ./... || exit 1
+- GOARCH=386 go test -v ./... || exit 1
 - GOARCH=amd64 go test -v ./... -race -coverprofile=coverage.txt -covermode=atomic
 
 after_success:

util/grand/grand_z_unit_test.go

@@ -25,7 +25,7 @@ func Test_Intn(t *testing.T) {
 		for i := 0; i < 1000000; i++ {
 			n := grand.Intn(-100)
 			gtest.AssertLE(n, 0)
-			gtest.AssertGT(n, -100)
+			gtest.Assert(n, -100)
 		}
 	})
 }