Add specs for Coverage.supported?

ruby · May 24, 2023 · 335b794 · 335b794
1 parent 807d754
commit 335b794
Showing 1 changed file with 28 additions and 0 deletions.
diff --git a/library/coverage/supported_spec.rb b/library/coverage/supported_spec.rb
@@ -0,0 +1,28 @@
+require_relative '../../spec_helper'
+require 'coverage'
+
+describe "Coverage.supported?" do
+  ruby_version_is "3.2" do
+    it "returns true or false if coverage measurement is supported for the given mode" do
+      [true, false].should.include?(Coverage.supported?(:lines))
+      [true, false].should.include?(Coverage.supported?(:branches))
+      [true, false].should.include?(Coverage.supported?(:methods))
+      [true, false].should.include?(Coverage.supported?(:eval))
+      [true, false].should.include?(Coverage.supported?(:all))
+    end
+
+    it "raise TypeError if argument is not Symbol" do
+      -> {
+        Coverage.supported?("lines")
+      }.should raise_error(TypeError, "wrong argument type String (expected Symbol)")
+
+      -> {
+        Coverage.supported?([])
+      }.should raise_error(TypeError, "wrong argument type Array (expected Symbol)")
+
+      -> {
+        Coverage.supported?(1)
+      }.should raise_error(TypeError, "wrong argument type Integer (expected Symbol)")
+    end
+  end
+end