support/testing: add test of BR2_CCACHE with an external toolchain

We reuse TestExternalToolchainBuildrootuClibc and add ccache to its
configuration.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Reviewed-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Tested-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

.gitlab-ci.yml

@@ -233,6 +233,7 @@ tests.package.test_python.TestPython2: *runtime_test
 tests.package.test_python.TestPython3: *runtime_test
 tests.toolchain.test_external.TestExternalToolchainBuildrootMusl: *runtime_test
 tests.toolchain.test_external.TestExternalToolchainBuildrootuClibc: *runtime_test
+tests.toolchain.test_external.TestExternalToolchainCCache: *runtime_test
 tests.toolchain.test_external.TestExternalToolchainCtngMusl: *runtime_test
 tests.toolchain.test_external.TestExternalToolchainLinaroArm: *runtime_test
 tests.toolchain.test_external.TestExternalToolchainSourceryArmv4: *runtime_test

support/testing/tests/toolchain/test_external.py

@@ -229,3 +229,14 @@ BR2_TOOLCHAIN_EXTERNAL_CXX=y
                            kernel="builtin",
                            options=["-initrd", img])
         self.emulator.login()
+
+class TestExternalToolchainCCache(TestExternalToolchainBuildrootuClibc):
+    extraconfig = \
+"""
+BR2_CCACHE=y
+BR2_CCACHE_DIR="{builddir}/ccache-dir"
+"""
+
+    def __init__(self, names):
+        super(TestExternalToolchainBuildrootuClibc, self).__init__(names)
+        self.config += self.extraconfig.format(builddir=self.builddir)