Added a checker for empty strings w/ corresponding test.

kat-co · Aug 12, 2014 · bfe9b50 · bfe9b50
1 parent 064425d
commit bfe9b50
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Showing 2 changed files with 20 additions and 0 deletions.
diff --git a/validation.go b/validation.go
@@ -134,6 +134,14 @@ func GreaterThan(param int, comparativeVal int, paramName string) Checker {
 	}
 }
 
+func StringNotEmpty(obtained, paramName string) Checker {
+	return func() (isNotEmpty bool, errMsg string) {
+		isNotEmpty = obtained != ""
+		errMsg = fmt.Sprintf("Parameter is an empty string: %s", paramName)
+		return
+	}
+}
+
 func validationFactory(numErrors int) *Validation {
 	return &Validation{make([]string, numErrors)}
 }
diff --git a/validation_test.go b/validation_test.go
@@ -155,3 +155,15 @@ func TestGreaterThan(t *testing.T) {
 		t.FailNow()
 	}
 }
+
+func TestStringNotEmpty(t *testing.T) {
+
+	err := BeginValidation().Validate(
+		StringNotEmpty("", "tmpA"),
+	).Check()
+
+	if err == nil {
+		t.Errorf("Expected an error.")
+		t.FailNow()
+	}
+}