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Merge pull request #12 from friendsofgo/matching_by_request_schema
Matching by request schema and calculate files directories
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -15,4 +15,4 @@ imposters | |
| schemas | ||
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|
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| !test/testdata/imposters/ | ||
| !test/testdata/schemas/ | ||
| !test/testdata/imposters/schemas/ | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| package killgrave | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "github.com/gorilla/mux" | ||
| "github.com/pkg/errors" | ||
| "github.com/xeipuuv/gojsonschema" | ||
| "io/ioutil" | ||
| "log" | ||
| "net/http" | ||
| "os" | ||
| ) | ||
|
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| // MatcherBySchema check if the request matching with the schema file | ||
| func MatcherBySchema(imposter Imposter) mux.MatcherFunc { | ||
| return func(req *http.Request, rm *mux.RouteMatch) bool { | ||
| err := validateSchema(imposter, req) | ||
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| // TODO: inject the logger | ||
| if err != nil { | ||
| log.Println(err) | ||
| return false | ||
| } | ||
| return true | ||
| } | ||
| } | ||
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| func validateSchema(imposter Imposter, req *http.Request) error { | ||
| if imposter.Request.SchemaFile == nil { | ||
| return nil | ||
| } | ||
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| var b []byte | ||
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| defer func() { | ||
| req.Body.Close() | ||
| req.Body = ioutil.NopCloser(bytes.NewBuffer(b)) | ||
| }() | ||
|
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| schemaFile := imposter.CalculateFilePath(*imposter.Request.SchemaFile) | ||
| if _, err := os.Stat(schemaFile); os.IsNotExist(err) { | ||
| return errors.Wrapf(err, "the schema file %s not found", schemaFile) | ||
| } | ||
|
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| b, err := ioutil.ReadAll(req.Body) | ||
| if err != nil { | ||
| return errors.Wrapf(err, "impossible read the request body") | ||
| } | ||
|
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| dir, _ := os.Getwd() | ||
| schemaFilePath := "file://" + dir + "/" + schemaFile | ||
| schema := gojsonschema.NewReferenceLoader(schemaFilePath) | ||
| document := gojsonschema.NewStringLoader(string(b)) | ||
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| res, err := gojsonschema.Validate(schema, document) | ||
| if err != nil { | ||
| return errors.Wrap(err, "error validating the json schema") | ||
| } | ||
|
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| if !res.Valid() { | ||
| for _, desc := range res.Errors() { | ||
| return errors.New(desc.String()) | ||
| } | ||
| } | ||
|
|
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| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| package killgrave | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "github.com/gorilla/mux" | ||
| "io/ioutil" | ||
| "net/http" | ||
| "testing" | ||
| ) | ||
|
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| func TestMatcherBySchema(t *testing.T) { | ||
| bodyA := ioutil.NopCloser(bytes.NewReader([]byte("{\"type\": \"gopher\"}"))) | ||
| bodyB := ioutil.NopCloser(bytes.NewReader([]byte("{\"type\": \"cat\"}"))) | ||
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| schemaGopherFile := "test/testdata/imposters/schemas/type_gopher.json" | ||
| schemaCatFile := "test/testdata/imposters/schemas/type_cat.json" | ||
| schemeFailFile := "test/testdata/imposters/schemas/type_gopher_fail.json" | ||
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| requestWithoutSchema := Request{ | ||
| Method: "POST", | ||
| Endpoint: "/login", | ||
| SchemaFile: nil, | ||
| } | ||
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| requestWithSchema := Request{ | ||
| Method: "POST", | ||
| Endpoint: "/login", | ||
| SchemaFile: &schemaGopherFile, | ||
| } | ||
|
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| requestWithNonExistingSchema := Request{ | ||
| Method: "POST", | ||
| Endpoint: "/login", | ||
| SchemaFile: &schemaCatFile, | ||
| } | ||
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| requestWithWrongSchema := Request{ | ||
| Method: "POST", | ||
| Endpoint: "/login", | ||
| SchemaFile: &schemeFailFile, | ||
| } | ||
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| okResponse := Response{Status: http.StatusOK} | ||
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| var matcherData = []struct { | ||
| name string | ||
| fn mux.MatcherFunc | ||
| req *http.Request | ||
| res bool | ||
| }{ | ||
| {"imposter without request schema", MatcherBySchema(Imposter{Request: requestWithoutSchema, Response: okResponse}), &http.Request{Body: bodyA}, true}, | ||
| {"correct request schema", MatcherBySchema(Imposter{Request: requestWithSchema, Response: okResponse}), &http.Request{Body: bodyA}, true}, | ||
| {"incorrect request schema", MatcherBySchema(Imposter{Request: requestWithSchema, Response: okResponse}), &http.Request{Body: bodyB}, false}, | ||
| {"non-existing schema file", MatcherBySchema(Imposter{Request: requestWithNonExistingSchema, Response: okResponse}), &http.Request{Body: bodyB}, false}, | ||
| {"malformatted schema file", MatcherBySchema(Imposter{Request: requestWithWrongSchema, Response: okResponse}), &http.Request{Body: bodyB}, false}, | ||
| } | ||
|
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| for _, tt := range matcherData { | ||
| t.Run(tt.name, func(t *testing.T) { | ||
| res := tt.fn(tt.req, nil) | ||
| if res != tt.res { | ||
| t.Fatalf("error while matching by request schema - expected: %t, given: %t", tt.res, res) | ||
| } | ||
| }) | ||
|
|
||
| } | ||
| } |
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