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| 1 | +/* |
| 2 | +Copyright 2019 The Kubernetes Authors. |
| 3 | +
|
| 4 | +Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | +you may not use this file except in compliance with the License. |
| 6 | +You may obtain a copy of the License at |
| 7 | +
|
| 8 | + http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | +
|
| 10 | +Unless required by applicable law or agreed to in writing, software |
| 11 | +distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | +See the License for the specific language governing permissions and |
| 14 | +limitations under the License. |
| 15 | +*/ |
| 16 | + |
| 17 | +/* |
| 18 | + * This command filters a JUnit file such that only tests with a name |
| 19 | + * matching a regular expression are passed through. By concatenating |
| 20 | + * multiple input files it is possible to merge them into a single file. |
| 21 | + */ |
| 22 | +package main |
| 23 | + |
| 24 | +import ( |
| 25 | + "encoding/xml" |
| 26 | + "flag" |
| 27 | + "io/ioutil" |
| 28 | + "os" |
| 29 | + "regexp" |
| 30 | +) |
| 31 | + |
| 32 | +var ( |
| 33 | + output = flag.String("o", "-", "junit file to write, - for stdout") |
| 34 | + tests = flag.String("t", "", "regular expression matching the test names that are to be included in the output") |
| 35 | +) |
| 36 | + |
| 37 | +/* |
| 38 | + * TestSuite represents a JUnit file. Due to how encoding/xml works, we have |
| 39 | + * represent all fields that we want to be passed through. It's therefore |
| 40 | + * not a complete solution, but good enough for Ginkgo + Spyglass. |
| 41 | + */ |
| 42 | +type TestSuite struct { |
| 43 | + XMLName string `xml:"testsuite"` |
| 44 | + TestCases []TestCase `xml:"testcase"` |
| 45 | +} |
| 46 | + |
| 47 | +type TestCase struct { |
| 48 | + Name string `xml:"name,attr"` |
| 49 | + Time string `xml:"time,attr"` |
| 50 | + SystemOut string `xml:"system-out,omitempty"` |
| 51 | + Failure string `xml:"failure,omitempty"` |
| 52 | + Skipped SkipReason `xml:"skipped,omitempty"` |
| 53 | +} |
| 54 | + |
| 55 | +// SkipReason deals with the special <skipped></skipped>: |
| 56 | +// if present, we must re-encode it, even if empty. |
| 57 | +type SkipReason string |
| 58 | + |
| 59 | +func (s *SkipReason) UnmarshalText(text []byte) error { |
| 60 | + *s = SkipReason(text) |
| 61 | + if *s == "" { |
| 62 | + *s = " " |
| 63 | + } |
| 64 | + return nil |
| 65 | +} |
| 66 | + |
| 67 | +func (s SkipReason) MarshalText() ([]byte, error) { |
| 68 | + if s == " " { |
| 69 | + return []byte{}, nil |
| 70 | + } |
| 71 | + return []byte(s), nil |
| 72 | +} |
| 73 | + |
| 74 | +func main() { |
| 75 | + var junit TestSuite |
| 76 | + var data []byte |
| 77 | + |
| 78 | + flag.Parse() |
| 79 | + |
| 80 | + re := regexp.MustCompile(*tests) |
| 81 | + |
| 82 | + // Read all input files. |
| 83 | + for _, input := range flag.Args() { |
| 84 | + if input == "-" { |
| 85 | + if _, err := os.Stdin.Read(data); err != nil { |
| 86 | + panic(err) |
| 87 | + } |
| 88 | + } else { |
| 89 | + var err error |
| 90 | + data, err = ioutil.ReadFile(input) |
| 91 | + if err != nil { |
| 92 | + panic(err) |
| 93 | + } |
| 94 | + } |
| 95 | + if err := xml.Unmarshal(data, &junit); err != nil { |
| 96 | + panic(err) |
| 97 | + } |
| 98 | + } |
| 99 | + |
| 100 | + // Keep only matching testcases. Testcases skipped in all test runs are only stored once. |
| 101 | + filtered := map[string]TestCase{} |
| 102 | + for _, testcase := range junit.TestCases { |
| 103 | + if !re.MatchString(testcase.Name) { |
| 104 | + continue |
| 105 | + } |
| 106 | + entry, ok := filtered[testcase.Name] |
| 107 | + if !ok || // not present yet |
| 108 | + entry.Skipped != "" && testcase.Skipped == "" { // replaced skipped test with real test run |
| 109 | + filtered[testcase.Name] = testcase |
| 110 | + } |
| 111 | + } |
| 112 | + junit.TestCases = nil |
| 113 | + for _, testcase := range filtered { |
| 114 | + junit.TestCases = append(junit.TestCases, testcase) |
| 115 | + } |
| 116 | + |
| 117 | + // Re-encode. |
| 118 | + data, err := xml.MarshalIndent(junit, "", " ") |
| 119 | + if err != nil { |
| 120 | + panic(err) |
| 121 | + } |
| 122 | + |
| 123 | + // Write to output. |
| 124 | + if *output == "-" { |
| 125 | + if _, err := os.Stdout.Write(data); err != nil { |
| 126 | + panic(err) |
| 127 | + } |
| 128 | + } else { |
| 129 | + if err := ioutil.WriteFile(*output, data, 0644); err != nil { |
| 130 | + panic(err) |
| 131 | + } |
| 132 | + } |
| 133 | +} |
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