support/test: new bat runtime test

Add a runtime test for the 'bat' package to verify that the binary executes
correctly in a minimal Buildroot rootfs.The test cheks that:
- 'bat --version' runs without error
- 'bat' can read and display a text file
- the displayed content matches the expected string

Signed-off-by: El Mehdi YOUNES <elmehdi.younes@smile.fr>
Signed-off-by: Julien Olivain <ju.o@free.fr>
(cherry picked from commit dacf8e3c39652c595519ab6d424009962d8ae9ba)
Signed-off-by: Thomas Perale <thomas.perale@mind.be>

support/testing/tests/package/test_bat.py

@@ -0,0 +1,27 @@
+import os
+import infra.basetest
+
+
+class TestBat(infra.basetest.BRTest):
+    config = infra.basetest.BASIC_TOOLCHAIN_CONFIG + \
+            """
+            BR2_PACKAGE_BAT=y
+            BR2_TARGET_ROOTFS_CPIO=y
+            # BR2_TARGET_ROOTFS_TAR is not set
+            """
+
+    def test_run(self):
+        cpio_file = os.path.join(self.builddir, "images", "rootfs.cpio")
+        self.emulator.boot(arch="armv7",
+                           kernel="builtin",
+                           options=["-initrd", cpio_file])
+        self.emulator.login()
+
+        # Check the programs can execute
+        self.assertRunOk("bat --version")
+        self.assertRunOk("echo 'hello test' > test.txt")
+
+        # Run bat and capture output
+        output, exit_code = self.emulator.run("bat test.txt", timeout=10)
+        self.assertEqual(exit_code, 0)
+        self.assertIn("hello test", "\n".join(output))