Truncate body upload limit (#67)

* typo

* truncate body upload, small typo fix

Author: wagslane

Diff for: checks/http.go

@@ -104,13 +104,26 @@ func HttpTest(
 			RequestHeaders: r.Header,
 			StatusCode:     resp.StatusCode,
 			Headers:        headers,
-			BodyString:     string(body),
+			BodyString:     truncateAndStringifyBody(body),
 			Variables:      variables,
 		}
 	}
 	return responses, finalBaseURL
 }
 
+// truncateAndStringifyBody
+// in some lessons we yeet the entire body up to the server, but we really shouldn't ever care
+// about more than 100,000 stringified characters of it, so this protects against giant bodies
+func truncateAndStringifyBody(body []byte) string {
+	bodyString := string(body)
+	const maxBodyLength = 100000
+	if len(bodyString) > maxBodyLength {
+		fmt.Printf("truncating from %v to %v", len(bodyString), maxBodyLength)
+		bodyString = bodyString[:maxBodyLength]
+	}
+	return bodyString
+}
+
 func parseVariables(body []byte, vardefs []api.ResponseVariable, variables map[string]string) error {
 	for _, vardef := range vardefs {
 		val, err := valFromJQPath(vardef.Path, string(body))

Diff for: render/http.go

@@ -258,7 +258,7 @@ func prettyPrintHTTPTest(test api.HTTPTest, variables map[string]string) string
 	}
 	if test.BodyContains != nil {
 		interpolated := checks.InterpolateVariables(*test.BodyContains, variables)
-		return fmt.Sprintf("Expecting JSON body to contain: %s", interpolated)
+		return fmt.Sprintf("Expecting body to contain: %s", interpolated)
 	}
 	if test.BodyContainsNone != nil {
 		interpolated := checks.InterpolateVariables(*test.BodyContainsNone, variables)