add ability to slim list of unit tests

Author: ianfixes

CHANGELOG.md

@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ## [Unreleased]
 ### Added
 - Yaml files can have either `.yml` or `.yaml` extensions
+- Yaml files support select/reject critera for paths of unit tests for targeted testing
 
 ### Changed
 

lib/arduino_ci/ci_config.rb

@@ -27,6 +27,10 @@
 UNITTEST_SCHEMA = {
   platforms: Array,
   libraries: Array,
+  testfiles: {
+    select: Array,
+    reject: Array,
+  }
 }.freeze
 module ArduinoCI
 
@@ -223,6 +227,21 @@ def aux_libraries_for_unittest
       @unittest_info[:libraries]
     end
 
+    # Config allows select / reject (aka whitelist / blacklist) criteria.  Enforce on a dir
+    # @param paths [Array<String>] the initial set of test files
+    # @return [Array<String>] files that match the select/reject criteria
+    def allowable_unittest_files(paths)
+      return if @unittest_info[:testfiles].nil?
+      ret = paths
+      unless @unittest_info[:testfiles][:select].nil? || @unittest_info[:testfiles][:select].empty?
+        ret = ret.select { |p| unittest_info[:testfiles][:select].any? { |glob| File.fnmatch(glob, File.basename(p)) } }
+      end
+      unless @unittest_info[:testfiles][:reject].nil?
+        ret = ret.reject { |p| unittest_info[:testfiles][:reject].any? { |glob| File.fnmatch(glob, File.basename(p)) } }
+      end
+      ret
+    end
+
     # get GCC configuration for a given platform
     # @param platform_name [String] The name of the platform as defined in yaml
     # @return [Hash] the settings

spec/ci_config_spec.rb

@@ -66,5 +66,26 @@
     end
   end
 
+  context "allowable_unittest_files" do
+    cpp_lib_path = File.join(File.dirname(__FILE__), "fake_library")
+    cpp_library = ArduinoCI::CppLibrary.new(cpp_lib_path)
+
+    it "starts with a known set of files" do
+      expect(cpp_library.test_files.map { |f| File.basename(f) }).to match_array([
+        "sam-squamsh.cpp",
+        "yes-good.cpp",
+        "mars.cpp"
+      ])
+    end
+
+    it "filters that set of files" do
+      override_file = File.join(File.dirname(__FILE__), "yaml", "o1.yaml")
+      combined_config = ArduinoCI::CIConfig.default.with_override(override_file)
+      expect(combined_config.allowable_unittest_files(cpp_library.test_files).map { |f| File.basename(f) }).to match_array([
+        "yes-good.cpp",
+      ])
+    end
+  end
+
 end
 

spec/fake_library/test/mars.cpp

@@ -32,6 +32,11 @@ compile:
     - esp8266
 
 unittest:
+  testfiles:
+    select:
+      - "*-*.*"
+    reject:
+      - "sam-squamsh.*"
   libraries:
     - "abc123"
     - "def456"