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+import os
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+
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+import infra.basetest
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+
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+
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+class TestWhich(infra.basetest.BRTest):
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+ config = infra.basetest.BASIC_TOOLCHAIN_CONFIG + \
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+ """
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+ BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
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+ BR2_PACKAGE_WHICH=y
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+ BR2_TARGET_ROOTFS_CPIO=y
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+ # BR2_TARGET_ROOTFS_TAR is not set
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+ """
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+
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+ def test_run(self):
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+ cpio_file = os.path.join(self.builddir, "images", "rootfs.cpio")
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+ self.emulator.boot(arch="armv5",
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+ kernel="builtin",
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+ options=["-initrd", cpio_file])
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+ self.emulator.login()
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+
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+ # We check the program can run. This also checks we are using
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+ # the actual GNU which, since the BusyBox implementation does
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+ # not accept this option.
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+ self.assertRunOk("which --version")
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+
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+ # We check the primary usage is working.
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+ out, ret = self.emulator.run("which sh")
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+ self.assertEqual(ret, 0)
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+ self.assertEqual(out[0], "/bin/sh")
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+
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+ alias_name = "buildoot_test_alias"
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+
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+ # We check "which" returns an error when the program is not
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+ # found.
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+ _, ret = self.emulator.run(f"which {alias_name}")
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+ self.assertNotEqual(ret, 0)
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+
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+ # We define a shell alias.
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+ alias_cmd = "/bin/true"
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+ alias_def = f"{alias_name}='{alias_cmd}'"
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+ self.assertRunOk(f"alias {alias_def}")
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+
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+ # We check our alias definition actually works, just by
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+ # invoking it (since it's aliased to "true").
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+ self.assertRunOk(alias_name)
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+
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+ # We check "which" is able to read aliases from the shell.
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+ cmd = f"alias | which -i {alias_name}"
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+ out, ret = self.emulator.run(cmd)
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+ self.assertEqual(ret, 0)
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+ self.assertEqual(out[0], alias_def)
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+ self.assertEqual(out[1].strip(), alias_cmd)
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Julien Olivain