test cases for json config

testing/unit/assertions.go

@@ -47,3 +47,7 @@ func (a *Assertion) Error(value error) *ErrorSubject {
 func (a *Assertion) Bool(value bool) *BoolSubject {
 	return NewBoolSubject(NewSubject(a), value)
 }
+
+func (a *Assertion) Pointer(value interface{}) *PointerSubject {
+	return NewPointerSubject(NewSubject(a), value)
+}

testing/unit/pointersubject.go

@@ -0,0 +1,48 @@
+package unit
+
+import (
+	"fmt"
+)
+
+type PointerSubject struct {
+	*Subject
+	value interface{}
+}
+
+func NewPointerSubject(base *Subject, value interface{}) *PointerSubject {
+	return &PointerSubject{
+		Subject: base,
+		value:   value,
+	}
+}
+
+func (subject *PointerSubject) Named(name string) *PointerSubject {
+	subject.Subject.Named(name)
+	return subject
+}
+
+func (subject *PointerSubject) Fail(verb string, other interface{}) {
+	subject.FailWithMessage(fmt.Sprintf("Not true that %s %s <%v>.", subject.DisplayString(), verb, other))
+}
+
+func (subject *PointerSubject) DisplayString() string {
+	return subject.Subject.DisplayString(fmt.Sprintf("%v", subject.value))
+}
+
+func (subject *PointerSubject) Equals(expectation interface{}) {
+	if subject.value != expectation {
+		subject.Fail("is equal to", expectation)
+	}
+}
+
+func (subject *PointerSubject) IsNil() {
+	if subject.value != nil {
+		subject.FailWithMessage("Not true that " + subject.DisplayString() + " is nil.")
+	}
+}
+
+func (subject *PointerSubject) IsNotNil() {
+	if subject.value == nil {
+		subject.FailWithMessage("Not true that " + subject.DisplayString() + " is not nil.")
+	}
+}

testing/unit/uint16subject.go

@@ -46,3 +46,9 @@ func (subject *Uint16Subject) LessThan(expectation uint16) {
 		subject.Fail("is less than", expectation)
 	}
 }
+
+func (subject *Uint16Subject) Positive() {
+	if subject.value <= 0 {
+		subject.FailWithMessage("Not true that " + subject.DisplayString() + " is positive.")
+	}
+}