simplify testing

testing/assert/string.go

@@ -0,0 +1,44 @@
+package assert
+
+import (
+	"strings"
+)
+
+func (this *Assert) String(value string) *StringSubject {
+	return &StringSubject{
+		Subject: Subject{
+			a:    this,
+			disp: value,
+		},
+		value: value,
+	}
+}
+
+type StringSubject struct {
+	Subject
+	value string
+}
+
+func (subject *StringSubject) Equals(expectation string) {
+	if subject.value != expectation {
+		subject.Fail("is equal to", expectation)
+	}
+}
+
+func (subject *StringSubject) NotEquals(expectation string) {
+	if subject.value == expectation {
+		subject.Fail("is not equal to ", expectation)
+	}
+}
+
+func (subject *StringSubject) Contains(substring string) {
+	if !strings.Contains(subject.value, substring) {
+		subject.Fail("contains", substring)
+	}
+}
+
+func (subject *StringSubject) NotContains(substring string) {
+	if strings.Contains(subject.value, substring) {
+		subject.Fail("doesn't contain", substring)
+	}
+}