Fix git related tests

Make tests less fragile by introducing a test git repo

fixtures/test.git

@@ -0,0 +1 @@
+Subproject commit 5196494806847d5233d877517a79b6ce8b33f5f7

git/git_test.go

@@ -1,12 +1,37 @@
 package git
 
 import (
-	"github.com/bmizerany/assert"
+	"os"
 	"strings"
 	"testing"
+
+	"github.com/bmizerany/assert"
 )
 
+type TestRepo struct {
+	Pwd string
+}
+
+func (g *TestRepo) Setup() {
+	g.Pwd, _ = os.Getwd()
+	os.Chdir("../fixtures/test.git")
+}
+
+func (g *TestRepo) TearDown() {
+	os.Chdir(g.Pwd)
+}
+
+func setupRepo() *TestRepo {
+	repo := &TestRepo{}
+	repo.Setup()
+
+	return repo
+}
+
 func TestGitDir(t *testing.T) {
+	repo := setupRepo()
+	defer repo.TearDown()
+
 	gitDir, _ := Dir()
 	assert.T(t, strings.Contains(gitDir, ".git"))
 }
@@ -19,29 +44,42 @@ func TestGitEditor(t *testing.T) {
 }
 
 func TestGitLog(t *testing.T) {
-	log, err := Log("e357a98a1a580b09d4f1d9bf613a6a51e131ef6e", "49e984e2fe86f68c386aeb133b390d39e4264ec1")
+	repo := setupRepo()
+	defer repo.TearDown()
+
+	log, err := Log("1dbff497d642562805323c5c2cccd4adc4a83b36", "5196494806847d5233d877517a79b6ce8b33f5f7")
 	assert.Equal(t, nil, err)
 	assert.NotEqual(t, "", log)
 }
 
 func TestGitRef(t *testing.T) {
-	gitRef, err := Ref("1c1077c052d32a83aa13a8afaa4a9630d2f28ef6")
+	repo := setupRepo()
+	defer repo.TearDown()
+
+	ref := "1dbff497d642562805323c5c2cccd4adc4a83b36"
+	gitRef, err := Ref(ref)
 	assert.Equal(t, nil, err)
-	assert.Equal(t, "1c1077c052d32a83aa13a8afaa4a9630d2f28ef6", gitRef)
+	assert.Equal(t, ref, gitRef)
 }
 
 func TestGitRefList(t *testing.T) {
-	refList, err := RefList("e357a98a1a580b09d4f1d9bf613a6a51e131ef6e", "49e984e2fe86f68c386aeb133b390d39e4264ec1")
+	repo := setupRepo()
+	defer repo.TearDown()
+
+	refList, err := RefList("1dbff497d642562805323c5c2cccd4adc4a83b36", "5196494806847d5233d877517a79b6ce8b33f5f7")
 	assert.Equal(t, nil, err)
 	assert.Equal(t, 1, len(refList))
 
-	assert.Equal(t, "49e984e2fe86f68c386aeb133b390d39e4264ec1", refList[0])
+	assert.Equal(t, "5196494806847d5233d877517a79b6ce8b33f5f7", refList[0])
 }
 
 func TestGitShow(t *testing.T) {
-	output, err := Show("f6ba909952aea75d69a9b6e1563a84ec3220ab9c")
+	repo := setupRepo()
+	defer repo.TearDown()
+
+	output, err := Show("5196494806847d5233d877517a79b6ce8b33f5f7")
 	assert.Equal(t, nil, err)
-	assert.Equal(t, "Fix typo in git show format\n\nIt's possible that comments are multiple lines", output)
+	assert.Equal(t, "Test comment\n\nMore comment", output)
 }
 
 func TestGitConfig(t *testing.T) {

github/remote_test.go

@@ -1,13 +1,37 @@
 package github
 
 import (
-	"github.com/bmizerany/assert"
-	"strings"
+	"os"
 	"testing"
+
+	"github.com/bmizerany/assert"
 )
 
+type TestRepo struct {
+	Pwd string
+}
+
+func (g *TestRepo) Setup() {
+	g.Pwd, _ = os.Getwd()
+	os.Chdir("../fixtures/test.git")
+}
+
+func (g *TestRepo) TearDown() {
+	os.Chdir(g.Pwd)
+}
+
+func setupRepo() *TestRepo {
+	repo := &TestRepo{}
+	repo.Setup()
+
+	return repo
+}
+
 func TestOriginRemote(t *testing.T) {
+	repo := setupRepo()
+	defer repo.TearDown()
+
 	gitRemote, _ := OriginRemote()
 	assert.Equal(t, "origin", gitRemote.Name)
-	assert.T(t, strings.Contains(gitRemote.URL.String(), "gh"))
+	assert.Equal(t, "https://github.com/test/test.git.git", gitRemote.URL.String())
 }