func matcherToGomegaMatcher(matcher interface{}) (types.GomegaMatcher, error) {
switch x := matcher.(type) {
case string, int, bool, float64:
return gomega.Equal(x), nil
case []interface{}:
var matchers []types.GomegaMatcher
for _, valueI := range x {
if subMatcher, ok := valueI.(types.GomegaMatcher); ok {
matchers = append(matchers, subMatcher)
} else {
matchers = append(matchers, gomega.ContainElement(valueI))
}
}
return gomega.And(matchers...), nil
}
matcher = sanitizeExpectedValue(matcher)
if matcher == nil {
return nil, fmt.Errorf("Missing Required Attribute")
}
matcherMap, ok := matcher.(map[string]interface{})
if !ok {
panic(fmt.Sprintf("Unexpected matcher type: %T\n\n", matcher))
}
var matchType string
var value interface{}
for matchType, value = range matcherMap {
break
}
switch matchType {
case "have-prefix":
return gomega.HavePrefix(value.(string)), nil
case "have-suffix":
return gomega.HaveSuffix(value.(string)), nil
case "match-regexp":
return gomega.MatchRegexp(value.(string)), nil
case "have-len":
value = sanitizeExpectedValue(value)
return gomega.HaveLen(value.(int)), nil
case "contain-element":
subMatcher, err := matcherToGomegaMatcher(value)
if err != nil {
return nil, err
}
return gomega.ContainElement(subMatcher), nil
case "not":
subMatcher, err := matcherToGomegaMatcher(value)
if err != nil {
return nil, err
}
return gomega.Not(subMatcher), nil
case "consist-of":
subMatchers, err := sliceToGomega(value)
if err != nil {
return nil, err
}
var interfaceSlice []interface{}
for _, d := range subMatchers {
interfaceSlice = append(interfaceSlice, d)
}
return gomega.ConsistOf(interfaceSlice...), nil
case "and":
subMatchers, err := sliceToGomega(value)
if err != nil {
return nil, err
}
return gomega.And(subMatchers...), nil
case "or":
subMatchers, err := sliceToGomega(value)
if err != nil {
return nil, err
}
return gomega.Or(subMatchers...), nil
case "gt", "ge", "lt", "le":
// Golang json escapes '>', '<' symbols, so we use 'gt', 'le' instead
comparator := map[string]string{
"gt": ">",
"ge": ">=",
"lt": "<",
"le": "<=",
}[matchType]
return gomega.BeNumerically(comparator, value), nil
default:
return nil, fmt.Errorf("Unknown matcher: %s", matchType)
}
}
in: `{"lt": 1}`,
want: gomega.BeNumerically("<", float64(1)),
},
{
in: `{"le": 1}`,
want: gomega.BeNumerically("<=", float64(1)),
},
// String
{
in: `{"have-prefix": "foo"}`,
want: gomega.HavePrefix("foo"),
},
{
in: `{"have-suffix": "foo"}`,
want: gomega.HaveSuffix("foo"),
},
// Regex support is based on golangs regex engine https://golang.org/pkg/regexp/syntax/
{
in: `{"match-regexp": "foo"}`,
want: gomega.MatchRegexp("foo"),
},
// Collection
{
in: `{"consist-of": ["foo"]}`,
want: gomega.ConsistOf(gomega.Equal("foo")),
},
{
in: `{"contain-element": "foo"}`,
want: gomega.ContainElement(gomega.Equal("foo")),