add osx to travis

.travis.yml

@@ -3,11 +3,14 @@
   sudo: false
   notifications:
     email: false
-  os:
-    - linux
-  go:
-    - 1.7
-    - tip
+  matrix:
+    include:
+      - os: linux
+        go: 1.7
+      - os: linux
+        go: tip
+      - os: osx
+        go: 1.7
   install:
     - echo "This is an override of the default install deps step in travis."
   script:

ensure_test.go

@@ -52,8 +52,7 @@ func main() {
 		t.Fatalf("expected %s, got %s", expectedManifest, manifest)
 	}
 
-	sysCommit, err := getRepoLatestCommit("golang/sys")
-	tg.must(err)
+	sysCommit := tg.getCommit("go.googlesource.com/sys")
 	expectedLock := `{
     "memo": "595716d270828e763c811ef79c9c41f85b1d1bfbdfe85280036405c03772206c",
     "projects": [

hoard_test.go

@@ -502,3 +502,14 @@ func (tg *testgoData) readLock() string {
 	tg.must(err)
 	return string(f)
 }
+
+func (tg *testgoData) getCommit(repo string) string {
+	repoPath := tg.path("pkg/hoard/sources/https---" + strings.Replace(repo, "/", "-", -1))
+	cmd := exec.Command("git", "rev-parse", "HEAD")
+	cmd.Dir = repoPath
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		tg.t.Fatalf("git commit failed: out -> %s err -> %v", string(out), err)
+	}
+	return strings.TrimSpace(string(out))
+}

init_test.go

@@ -1,10 +1,6 @@
 package main
 
 import (
-	"encoding/json"
-	"errors"
-	"fmt"
-	"net/http"
 	"os"
 	"path/filepath"
 	"regexp"
@@ -169,8 +165,7 @@ const Qux = "yo yo!"
 		t.Fatalf("expected %s, got %s", expectedManifest, manifest)
 	}
 
-	sysCommit, err := getRepoLatestCommit("golang/sys")
-	tg.must(err)
+	sysCommit := tg.getCommit("go.googlesource.com/sys")
 	expectedLock := `{
     "projects": [
         {
@@ -210,24 +205,3 @@ var memoRE = regexp.MustCompile(`\s+"memo": "[a-z0-9]+",`)
 func wipeMemo(s string) string {
 	return memoRE.ReplaceAllString(s, "")
 }
-
-type commit struct {
-	Sha string `json:"sha"`
-}
-
-func getRepoLatestCommit(repo string) (string, error) {
-	resp, err := http.Get(fmt.Sprintf("https://api.github.com/repos/%s/commits?per_page=1", repo))
-	if err != nil {
-		return "", err
-	}
-
-	var commits []commit
-	if err := json.NewDecoder(resp.Body).Decode(&commits); err != nil {
-		return "", err
-	}
-
-	if len(commits) < 1 {
-		return "", errors.New("got no commits")
-	}
-	return commits[0].Sha, nil
-}

remove_test.go

@@ -121,8 +121,7 @@ func main() {
 		t.Fatalf("expected %s, got %s", expectedManifest, manifest)
 	}
 
-	sysCommit, err := getRepoLatestCommit("golang/sys")
-	tg.must(err)
+	sysCommit := tg.getCommit("go.googlesource.com/sys")
 	expectedLock := `{
     "projects": [
         {