mirror of
https://github.com/ralsina/tartrazine.git
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300 lines
8.3 KiB
Go
300 lines
8.3 KiB
Go
package generator
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import (
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"flag"
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"io/ioutil"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/suite"
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)
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const (
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linguistURL = "https://github.com/github/linguist.git"
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linguistClonedEnvVar = "ENRY_TEST_REPO"
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commit = "e4560984058b4726010ca4b8f03ed9d0f8f464db"
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samplesDir = "samples"
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languagesFile = "lib/linguist/languages.yml"
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testDir = "test_files"
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assetsDir = "../assets"
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// Extensions test
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extensionGold = testDir + "/extension.gold"
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extensionTestTmplPath = assetsDir + "/extension.go.tmpl"
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extensionTestTmplName = "extension.go.tmpl"
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// Heuristics test
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heuristicsTestFile = "lib/linguist/heuristics.yml"
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contentGold = testDir + "/content.gold"
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contentTestTmplPath = assetsDir + "/content.go.tmpl"
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contentTestTmplName = "content.go.tmpl"
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// Vendor test
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vendorTestFile = "lib/linguist/vendor.yml"
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vendorGold = testDir + "/vendor.gold"
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vendorTestTmplPath = assetsDir + "/vendor.go.tmpl"
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vendorTestTmplName = "vendor.go.tmpl"
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// Documentation test
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documentationTestFile = "lib/linguist/documentation.yml"
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documentationGold = testDir + "/documentation.gold"
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documentationTestTmplPath = assetsDir + "/documentation.go.tmpl"
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documentationTestTmplName = "documentation.go.tmpl"
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// Types test
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typeGold = testDir + "/type.gold"
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typeTestTmplPath = assetsDir + "/type.go.tmpl"
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typeTestTmplName = "type.go.tmpl"
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// Interpreters test
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interpreterGold = testDir + "/interpreter.gold"
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interpreterTestTmplPath = assetsDir + "/interpreter.go.tmpl"
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interpreterTestTmplName = "interpreter.go.tmpl"
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// Filenames test
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filenameGold = testDir + "/filename.gold"
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filenameTestTmplPath = assetsDir + "/filename.go.tmpl"
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filenameTestTmplName = "filename.go.tmpl"
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// Aliases test
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aliasGold = testDir + "/alias.gold"
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aliasTestTmplPath = assetsDir + "/alias.go.tmpl"
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aliasTestTmplName = "alias.go.tmpl"
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// Frequencies test
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frequenciesGold = testDir + "/frequencies.gold"
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frequenciesTestTmplPath = assetsDir + "/frequencies.go.tmpl"
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frequenciesTestTmplName = "frequencies.go.tmpl"
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// commit test
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commitGold = testDir + "/commit.gold"
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commitTestTmplPath = assetsDir + "/commit.go.tmpl"
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commitTestTmplName = "commit.go.tmpl"
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// mime test
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mimeTypeGold = testDir + "/mimeType.gold"
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mimeTypeTestTmplPath = assetsDir + "/mimeType.go.tmpl"
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mimeTypeTestTmplName = "mimeType.go.tmpl"
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)
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type GeneratorTestSuite struct {
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suite.Suite
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tmpLinguist string
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cloned bool
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testCases []testCase
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}
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type testCase struct {
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name string
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fileToParse string
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samplesDir string
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tmplPath string
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tmplName string
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commit string
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generate File
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wantOut string
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}
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var updateGold = flag.Bool("update_gold", false, "Update golden test files")
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func Test_GeneratorTestSuite(t *testing.T) {
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suite.Run(t, new(GeneratorTestSuite))
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}
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func (s *GeneratorTestSuite) maybeCloneLinguist() {
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var err error
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s.tmpLinguist = os.Getenv(linguistClonedEnvVar)
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s.cloned = s.tmpLinguist == ""
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if s.cloned {
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s.tmpLinguist, err = ioutil.TempDir("", "linguist-")
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assert.NoError(s.T(), err)
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cmd := exec.Command("git", "clone", linguistURL, s.tmpLinguist)
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err = cmd.Run()
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assert.NoError(s.T(), err)
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cwd, err := os.Getwd()
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assert.NoError(s.T(), err)
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err = os.Chdir(s.tmpLinguist)
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assert.NoError(s.T(), err)
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cmd = exec.Command("git", "checkout", commit)
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err = cmd.Run()
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assert.NoError(s.T(), err)
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err = os.Chdir(cwd)
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assert.NoError(s.T(), err)
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}
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}
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func (s *GeneratorTestSuite) SetupSuite() {
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s.maybeCloneLinguist()
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s.testCases = []testCase{
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{
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name: "Extensions()",
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fileToParse: filepath.Join(s.tmpLinguist, languagesFile),
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samplesDir: "",
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tmplPath: extensionTestTmplPath,
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tmplName: extensionTestTmplName,
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commit: commit,
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generate: Extensions,
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wantOut: extensionGold,
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},
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{
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name: "Heuristics()",
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fileToParse: filepath.Join(s.tmpLinguist, heuristicsTestFile),
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samplesDir: "",
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tmplPath: contentTestTmplPath,
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tmplName: contentTestTmplName,
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commit: commit,
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generate: GenHeuristics,
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wantOut: contentGold,
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},
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{
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name: "Vendor()",
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fileToParse: filepath.Join(s.tmpLinguist, vendorTestFile),
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samplesDir: "",
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tmplPath: vendorTestTmplPath,
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tmplName: vendorTestTmplName,
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commit: commit,
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generate: Vendor,
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wantOut: vendorGold,
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},
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{
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name: "Documentation()",
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fileToParse: filepath.Join(s.tmpLinguist, documentationTestFile),
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samplesDir: "",
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tmplPath: documentationTestTmplPath,
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tmplName: documentationTestTmplName,
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commit: commit,
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generate: Documentation,
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wantOut: documentationGold,
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},
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{
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name: "Types()",
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fileToParse: filepath.Join(s.tmpLinguist, languagesFile),
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samplesDir: "",
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tmplPath: typeTestTmplPath,
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tmplName: typeTestTmplName,
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commit: commit,
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generate: Types,
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wantOut: typeGold,
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},
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{
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name: "Interpreters()",
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fileToParse: filepath.Join(s.tmpLinguist, languagesFile),
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samplesDir: "",
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tmplPath: interpreterTestTmplPath,
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tmplName: interpreterTestTmplName,
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commit: commit,
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generate: Interpreters,
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wantOut: interpreterGold,
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},
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{
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name: "Filenames()",
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fileToParse: filepath.Join(s.tmpLinguist, languagesFile),
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samplesDir: filepath.Join(s.tmpLinguist, samplesDir),
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tmplPath: filenameTestTmplPath,
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tmplName: filenameTestTmplName,
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commit: commit,
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generate: Filenames,
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wantOut: filenameGold,
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},
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{
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name: "Aliases()",
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fileToParse: filepath.Join(s.tmpLinguist, languagesFile),
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samplesDir: "",
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tmplPath: aliasTestTmplPath,
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tmplName: aliasTestTmplName,
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commit: commit,
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generate: Aliases,
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wantOut: aliasGold,
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},
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{
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name: "Frequencies()",
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samplesDir: filepath.Join(s.tmpLinguist, samplesDir),
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tmplPath: frequenciesTestTmplPath,
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tmplName: frequenciesTestTmplName,
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commit: commit,
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generate: Frequencies,
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wantOut: frequenciesGold,
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},
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{
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name: "Commit()",
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samplesDir: "",
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tmplPath: commitTestTmplPath,
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tmplName: commitTestTmplName,
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commit: commit,
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generate: Commit,
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wantOut: commitGold,
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},
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{
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name: "MimeType()",
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fileToParse: filepath.Join(s.tmpLinguist, languagesFile),
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samplesDir: "",
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tmplPath: mimeTypeTestTmplPath,
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tmplName: mimeTypeTestTmplName,
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commit: commit,
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generate: MimeType,
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wantOut: mimeTypeGold,
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},
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}
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}
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func (s *GeneratorTestSuite) TearDownSuite() {
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if s.cloned {
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err := os.RemoveAll(s.tmpLinguist)
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if err != nil {
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s.T().Logf("Failed to clean up %s after the test.\n", s.tmpLinguist)
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}
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}
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}
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// TestUpdateGeneratorTestSuiteGold is a Gold results generation automation.
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// It should only be enabled&run manually on every new Linguist version
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// to update *.gold files.
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func (s *GeneratorTestSuite) TestUpdateGeneratorTestSuiteGold() {
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if !*updateGold {
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s.T().Skip()
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}
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s.T().Logf("Generating new *.gold test files")
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for _, test := range s.testCases {
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dst := test.wantOut
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s.T().Logf("Generating %s from %s\n", dst, test.fileToParse)
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err := test.generate(test.fileToParse, test.samplesDir, dst, test.tmplPath, test.tmplName, test.commit)
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assert.NoError(s.T(), err)
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}
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}
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func (s *GeneratorTestSuite) TestGenerationFiles() {
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for _, test := range s.testCases {
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gold, err := ioutil.ReadFile(test.wantOut)
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assert.NoError(s.T(), err)
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outPath, err := ioutil.TempFile("/tmp", "generator-test-")
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assert.NoError(s.T(), err)
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defer os.Remove(outPath.Name())
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err = test.generate(test.fileToParse, test.samplesDir, outPath.Name(), test.tmplPath, test.tmplName, test.commit)
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assert.NoError(s.T(), err)
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out, err := ioutil.ReadFile(outPath.Name())
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assert.NoError(s.T(), err)
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expected := normalizeSpaces(string(gold))
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actual := normalizeSpaces(string(out))
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assert.Equal(s.T(), expected, actual, "Test %s", test.name)
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}
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}
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// normalizeSpaces returns a copy of str with whitespaces normalized.
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// We use this to compare generated source as gofmt format may change.
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// E.g for changes between Go 1.10 and 1.11 see
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// https://go-review.googlesource.com/c/go/+/122295/
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func normalizeSpaces(str string) string {
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return strings.Join(strings.Fields(str), " ")
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}
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