1 files changed, 46 insertions, 0 deletions
diff --git a/tests/t0001-shebang.t b/tests/t0001-shebang.t
new file mode 100755
index 0000000..31a40a5
--- /dev/null
+++ b/tests/t0001-shebang.t
@@ -0,0 +1,46 @@
+#!/bin/sh -e
+# Copyright (c) 2015 Tharre
+#
+# This software may be modified and distributed under the terms
+# of the MIT license.  See the LICENSE file for details.
+
+test_description='Test if shebang line is honored.
+
+Requires /proc/<pid>/cmdline, so it may not work on some platforms'
+
+. ./sharness.sh
+
+cat > "shebang.do" <<'EOF'
+#!/bin/sh
+cat /proc/$$/cmdline | tr "\0" " " | cut -d' ' -f1,2
+EOF
+
+cat > "shebang2.do" <<'EOF'
+cat /proc/$$/cmdline | tr "\0" " " | cut -d' ' -f1,2
+EOF
+
+cat > "echo.do" <<'EOF'
+#!/usr/bin/env echo
+EOF
+
+test_expect_success "/bin/sh exists" "
+    test -e /bin/sh
+"
+
+test_expect_success "/usr/bin/env exists" "
+    test -e /usr/bin/env
+"
+
+test_expect_success "/proc/<pid>/cmdline reports correct shebang" "
+    redo shebang | grep -q '/bin/sh shebang.do'
+"
+
+test_expect_success "'/bin/sh -e' is used if no shebang is specified" "
+    redo shebang2 | grep -q 'bin/sh -e'
+"
+
+test_expect_success "'/usr/bin/env echo' works" "
+    redo echo | grep -q echo.do
+"
+
+test_done