Slight performance changes to integrations/git_test.go (#11227)

* switch to use pseudorandom generator and stop cloning in pushcreate

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Add some logging of BranchProtectPRMerge

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Stop running prepareTestEnv so often for TestAPIGetBranch

Signed-off-by: Andrew Thornton <art27@cantab.net>

integrations/api_branch_test.go

@@ -14,8 +14,6 @@ import (
 )
 
 func testAPIGetBranch(t *testing.T, branchName string, exists bool) {
-	defer prepareTestEnv(t)()
-
 	session := loginUser(t, "user2")
 	token := getTokenForLoggedInUser(t, session)
 	req := NewRequestf(t, "GET", "/api/v1/repos/user2/repo1/branches/%s?token=%s", branchName, token)
@@ -88,6 +86,7 @@ func testAPIDeleteBranch(t *testing.T, branchName string, expectedHTTPStatus int
 }
 
 func TestAPIGetBranch(t *testing.T) {
+	defer prepareTestEnv(t)()
 	for _, test := range []struct {
 		BranchName string
 		Exists     bool

integrations/git_test.go

@@ -5,9 +5,9 @@
 package integrations
 
 import (
-	"crypto/rand"
 	"fmt"
 	"io/ioutil"
+	"math/rand"
 	"net/http"
 	"net/url"
 	"os"
@@ -70,6 +70,7 @@ func testGit(t *testing.T, u *url.URL) {
 
 		t.Run("BranchProtectMerge", doBranchProtectPRMerge(&httpContext, dstPath))
 		t.Run("MergeFork", func(t *testing.T) {
+			defer PrintCurrentTest(t)()
 			t.Run("CreatePRAndMerge", doMergeFork(httpContext, forkedUserCtx, "master", httpContext.Username+":master"))
 			rawTest(t, &forkedUserCtx, little, big, littleLFS, bigLFS)
 			mediaTest(t, &forkedUserCtx, little, big, littleLFS, bigLFS)
@@ -109,6 +110,7 @@ func testGit(t *testing.T, u *url.URL) {
 
 			t.Run("BranchProtectMerge", doBranchProtectPRMerge(&sshContext, dstPath))
 			t.Run("MergeFork", func(t *testing.T) {
+				defer PrintCurrentTest(t)()
 				t.Run("CreatePRAndMerge", doMergeFork(sshContext, forkedUserCtx, "master", sshContext.Username+":master"))
 				rawTest(t, &forkedUserCtx, little, big, littleLFS, bigLFS)
 				mediaTest(t, &forkedUserCtx, little, big, littleLFS, bigLFS)
@@ -291,17 +293,34 @@ func doCommitAndPush(t *testing.T, size int, repoPath, prefix string) string {
 
 func generateCommitWithNewData(size int, repoPath, email, fullName, prefix string) (string, error) {
 	//Generate random file
-	data := make([]byte, size)
-	_, err := rand.Read(data)
-	if err != nil {
-		return "", err
+	bufSize := 4 * 1024
+	if bufSize > size {
+		bufSize = size
 	}
+
+	buffer := make([]byte, bufSize)
+
 	tmpFile, err := ioutil.TempFile(repoPath, prefix)
 	if err != nil {
 		return "", err
 	}
 	defer tmpFile.Close()
-	_, err = tmpFile.Write(data)
+	written := 0
+	for written < size {
+		n := size - written
+		if n > bufSize {
+			n = bufSize
+		}
+		_, err := rand.Read(buffer[:n])
+		if err != nil {
+			return "", err
+		}
+		n, err = tmpFile.Write(buffer[:n])
+		if err != nil {
+			return "", err
+		}
+		written += n
+	}
 	if err != nil {
 		return "", err
 	}
@@ -411,6 +430,7 @@ func doProtectBranch(ctx APITestContext, branch string, userToWhitelist string)
 
 func doMergeFork(ctx, baseCtx APITestContext, baseBranch, headBranch string) func(t *testing.T) {
 	return func(t *testing.T) {
+		defer PrintCurrentTest(t)()
 		var pr api.PullRequest
 		var err error
 		t.Run("CreatePullRequest", func(t *testing.T) {
@@ -485,9 +505,6 @@ func doPushCreate(ctx APITestContext, u *url.URL) func(t *testing.T) {
 		tmpDir, err := ioutil.TempDir("", ctx.Reponame)
 		assert.NoError(t, err)
 
-		_, err = git.NewCommand("clone", u.String()).RunInDir(tmpDir)
-		assert.Error(t, err)
-
 		err = git.InitRepository(tmpDir, false)
 		assert.NoError(t, err)