Add support for CI_TIMESTAMP env var (#300)

Author: markphelps

env/git.go

@@ -160,6 +160,6 @@ var gitBranchVars = []string{"GIT_BRANCH", "APPVEYOR_REPO_BRANCH", "BRANCH_NAME"
 
 var gitCommitShaVars = []string{"GIT_COMMIT_SHA", "APPVEYOR_REPO_COMMIT", "BUILDKITE_COMMIT", "CIRCLE_SHA1", "CI_BUILD_REF", "CI_BUILD_SHA", "CI_COMMIT", "CI_COMMIT_ID", "DRONE_COMMIT", "GIT_COMMIT", "WERCKER_GIT_COMMIT", "TRAVIS_PULL_REQUEST_SHA", "TRAVIS_COMMIT", "CI_COMMIT_SHA"}
 
-var gitCommittedAtVars = []string{"GIT_COMMITTED_AT", "GIT_COMMITED_AT", "CI_COMMITTED_AT", "CI_COMMITED_AT"}
+var gitCommittedAtVars = []string{"GIT_COMMITTED_AT", "GIT_COMMITED_AT", "CI_COMMITTED_AT", "CI_COMMITED_AT", "CI_TIMESTAMP"}
 
 var blobRegex = regexp.MustCompile(`^\d.+\s+blob\s(\w+)`)

env/git_test.go

@@ -68,3 +68,13 @@ GIT_COMMIT_SHA=a12345
 GIT_COMMITTED_AT=1234`
 	r.Equal(exp, g.String())
 }
+
+func Test_loadGitFromENV_CI_TIMESTAMP(t *testing.T) {
+	r := require.New(t)
+	envy.Temp(func() {
+		envy.Set("CI_TIMESTAMP", "1345")
+		g, err := findGitInfo()
+		r.NoError(err)
+		r.Equal(g.CommittedAt, 1345)
+	})
+}