Fix regression: previously create test namespace is used across test runs

This fixes regression introduced in PR redhat-developer#848 - we should reuse created test namespace
across multiple runs of acceptance tests

Signed-off-by: Predrag Knezevic <[email protected]>

Author: pedjak

Makefile

@@ -164,24 +164,20 @@ setup-venv:
 	$(Q)$(PYTHON_VENV_DIR)/bin/pip install --upgrade setuptools
 	$(Q)$(PYTHON_VENV_DIR)/bin/pip install --upgrade pip
 
-.PHONY: out/test-namespace
-# Generate namespace name for test
-out/test-namespace:
-	$(Q)mkdir -p $(OUTPUT_DIR)
-	@echo -n "test-namespace-$(shell uuidgen | tr '[:upper:]' '[:lower:]' | head -c 8)" > $(OUTPUT_DIR)/test-namespace
-
 .PHONY: get-test-namespace
-get-test-namespace: out/test-namespace
-	$(eval TEST_NAMESPACE := $(shell cat $(OUTPUT_DIR)/test-namespace))
+get-test-namespace:
+	$(Q)mkdir -p $(OUTPUT_DIR)
+	$(eval TEST_NAMESPACE := $(shell test -f $(OUTPUT_DIR)/test-namespace || (mktemp -u test-namespace-XXXX | tr '[:upper:]' '[:lower:]' > $(OUTPUT_DIR)/test-namespace) && cat $(OUTPUT_DIR)/test-namespace))
+	echo $(TEST_NAMESPACE)
 
 # Testing setup
 .PHONY: deploy-test-3rd-party-crds
 deploy-test-3rd-party-crds: get-test-namespace
 	$(Q)kubectl --namespace $(TEST_NAMESPACE) apply -f ./test/third-party-crds/
 
 .PHONY: create-test-namespace
-create-test-namespace:
-	$(Q)kubectl create namespace $(TEST_NAMESPACE)
+create-test-namespace: get-test-namespace
+	$(Q)kubectl get namespace $(TEST_NAMESPACE) || kubectl create namespace $(TEST_NAMESPACE)
 
 .PHONY: test-setup
 test-setup: test-cleanup create-test-namespace deploy-test-3rd-party-crds