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// Copyright 2020 New Relic Corporation. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
package utilization
import (
"bytes"
"encoding/json"
"errors"
"net/http"
"testing"
)
// Cross agent test types common to each provider's set of test cases.
type testCase struct {
TestName string `json:"testname"`
URIs map[string]jsonResponse `json:"uri"`
EnvVars map[string]envResponse `json:"env_vars"`
ExpectedVendorsHash vendors `json:"expected_vendors_hash"`
ExpectedMetrics map[string]metric `json:"expected_metrics"`
}
type envResponse struct {
Response string `json:"response"`
Timeout bool `json:"timeout"`
}
type jsonResponse struct {
Response json.RawMessage `json:"response"`
Timeout bool `json:"timeout"`
}
type metric struct {
CallCount int `json:"call_count"`
}
var errTimeout = errors.New("timeout")
type mockTransport struct {
t *testing.T
responses map[string]jsonResponse
}
type mockBody struct {
bytes.Reader
closed bool
t *testing.T
}
func (m *mockTransport) RoundTrip(r *http.Request) (*http.Response, error) {
for match, response := range m.responses {
if r.URL.String() == match {
return m.respond(response)
}
}
m.t.Errorf("Unknown request URI: %s", r.URL.String())
return nil, nil
}
func (m *mockTransport) respond(resp jsonResponse) (*http.Response, error) {
if resp.Timeout {
return nil, errTimeout
}
return &http.Response{
Status: "200 OK",
StatusCode: 200,
Body: &mockBody{
t: m.t,
Reader: *bytes.NewReader(resp.Response),
},
}, nil
}
// This function is included simply so that http.Client doesn't complain.
func (m *mockTransport) CancelRequest(r *http.Request) {}
func (m *mockBody) Close() error {
if m.closed {
m.t.Error("Close of already closed connection!")
}
m.closed = true
return nil
}
func (m *mockBody) ensureClosed() {
if !m.closed {
m.t.Error("Connection was not closed")
}
}
func TestNormaliseValue(t *testing.T) {
testCases := []struct {
name string
input string
expected string
isError bool
}{
{
name: "Valid - empty",
input: "",
expected: "",
isError: false,
},
{
name: "Valid - symbols",
input: ". /-_",
expected: ". /-_",
isError: false,
},
{
name: "Valid - string",
input: "simplesentence",
expected: "simplesentence",
isError: false,
},
{
name: "Invalid - More than 255",
input: `256256256256256256256256256256256256256256256256256256256256
256256256256256256256256256256256256256256256256256256256256256256256256
256256256256256256256256256256256256256256256256256256256256256256256256
2562562562562562562562562562562562562562562562562562`,
expected: "",
isError: true,
},
}
for _, tc := range testCases {
actual, err := normalizeValue(tc.input)
if tc.isError && err == nil {
t.Fatalf("%s: expected error; got nil", tc.name)
} else if !tc.isError {
if err != nil {
t.Fatalf("%s: expected not error; got: %v", tc.name, err)
}
if tc.expected != actual {
t.Fatalf("%s: expected: %s; got: %s", tc.name, tc.expected, actual)
}
}
}
}
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