diff --git a/tests/test-commit.t b/tests/test-commit.t
--- a/tests/test-commit.t
+++ b/tests/test-commit.t
@@ -298,7 +298,7 @@ test saving last-message.txt
   $ echo 'sub = sub' > .hgsub
   $ hg add .hgsub
 
-  $ cat > $TESTDIR/editor.sh <<EOF
+  $ cat > $TESTTMP/editor.sh <<EOF
   > echo "==== before editing:"
   > cat \$1
   > echo "===="
@@ -306,7 +306,7 @@ test saving last-message.txt
   > EOF
 
   $ rm -f .hg/last-message.txt
-  $ HGEDITOR="sh $TESTDIR/editor.sh" hg commit -S -q
+  $ HGEDITOR="sh $TESTTMP/editor.sh" hg commit -S -q
   ==== before editing:
   
   
diff --git a/tests/test-histedit-fold.t b/tests/test-histedit-fold.t
--- a/tests/test-histedit-fold.t
+++ b/tests/test-histedit-fold.t
@@ -107,7 +107,7 @@ check histedit_source
 
 check saving last-message.txt
 
-  $ cat > $TESTDIR/abortfolding.py <<EOF
+  $ cat > $TESTTMP/abortfolding.py <<EOF
   > from mercurial import util
   > def abortfolding(ui, repo, hooktype, **kwargs):
   >     ctx = repo[kwargs.get('node')]
@@ -117,10 +117,10 @@ check saving last-message.txt
   > EOF
   $ cat > .hg/hgrc <<EOF
   > [hooks]
-  > pretxncommit.abortfolding = python:$TESTDIR/abortfolding.py:abortfolding
+  > pretxncommit.abortfolding = python:$TESTTMP/abortfolding.py:abortfolding
   > EOF
 
-  $ cat > $TESTDIR/editor.sh << EOF
+  $ cat > $TESTTMP/editor.sh << EOF
   > echo "==== before editing"
   > cat \$1
   > echo "===="
@@ -128,7 +128,7 @@ check saving last-message.txt
   > EOF
 
   $ rm -f .hg/last-message.txt
-  $ HGEDITOR="sh $TESTDIR/editor.sh" hg histedit 6de59d13424a --commands - 2>&1 <<EOF | fixbundle
+  $ HGEDITOR="sh $TESTTMP/editor.sh" hg histedit 6de59d13424a --commands - 2>&1 <<EOF | fixbundle
   > pick 6de59d13424a f
   > fold 9c277da72c9b d
   > EOF
diff --git a/tests/test-mq-qfold.t b/tests/test-mq-qfold.t
--- a/tests/test-mq-qfold.t
+++ b/tests/test-mq-qfold.t
@@ -144,7 +144,7 @@ Test saving last-message.txt:
 
   $ hg qrefresh -m "original message"
 
-  $ cat > $TESTDIR/commitfailure.py <<EOF
+  $ cat > $TESTTMP/commitfailure.py <<EOF
   > from mercurial import util
   > def reposetup(ui, repo):
   >     class commitfailure(repo.__class__):
@@ -155,10 +155,10 @@ Test saving last-message.txt:
 
   $ cat > .hg/hgrc <<EOF
   > [extensions]
-  > commitfailure = $TESTDIR/commitfailure.py
+  > commitfailure = $TESTTMP/commitfailure.py
   > EOF
 
-  $ cat > $TESTDIR/editor.sh << EOF
+  $ cat > $TESTTMP/editor.sh << EOF
   > echo "==== before editing"
   > cat \$1
   > echo "===="
@@ -166,7 +166,7 @@ Test saving last-message.txt:
   > EOF
 
   $ rm -f .hg/last-message.txt
-  $ HGEDITOR="sh $TESTDIR/editor.sh" hg qfold -e p3
+  $ HGEDITOR="sh $TESTTMP/editor.sh" hg qfold -e p3
   ==== before editing
   original message====
   refresh interrupted while patch was popped! (revert --all, qpush to recover)
diff --git a/tests/test-mq-qnew.t b/tests/test-mq-qnew.t
--- a/tests/test-mq-qnew.t
+++ b/tests/test-mq-qnew.t
@@ -239,7 +239,7 @@ Test saving last-message.txt
   $ hg init repo
   $ cd repo
 
-  $ cat > $TESTDIR/commitfailure.py <<EOF
+  $ cat > $TESTTMP/commitfailure.py <<EOF
   > from mercurial import util
   > def reposetup(ui, repo):
   >     class commitfailure(repo.__class__):
@@ -249,10 +249,10 @@ Test saving last-message.txt
   > EOF
   $ cat > .hg/hgrc <<EOF
   > [extensions]
-  > commitfailure = $TESTDIR/commitfailure.py
+  > commitfailure = $TESTTMP/commitfailure.py
   > EOF
 
-  $ cat > $TESTDIR/editor.sh << EOF
+  $ cat > $TESTTMP/editor.sh << EOF
   > echo "==== before editing"
   > cat \$1
   > echo "===="
@@ -260,7 +260,7 @@ Test saving last-message.txt
   > EOF
 
   $ rm -f .hg/last-message.txt
-  $ HGEDITOR="sh $TESTDIR/editor.sh" hg qnew -e patch
+  $ HGEDITOR="sh $TESTTMP/editor.sh" hg qnew -e patch
   ==== before editing
   ====
   abort: emulating unexpected abort