add specs for CGI.escapeURIComponent

library/cgi/escapeURIComponent_spec.rb

@@ -0,0 +1,57 @@
+require_relative '../../spec_helper'
+require 'cgi'
+
+ruby_version_is "3.2" do
+  describe "CGI.escapeURIComponent" do
+    it "escapes whitespace" do
+      string = "&<>\" \xE3\x82\x86\xE3\x82\x93\xE3\x82\x86\xE3\x82\x93"
+      CGI.escapeURIComponent(string).should == '%26%3C%3E%22%20%E3%82%86%E3%82%93%E3%82%86%E3%82%93'
+    end
+
+    it "does not escape with unreserved characters" do
+      string = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~"
+      CGI.escapeURIComponent(string).should == "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~"
+    end
+
+    it "supports String with invalid encoding" do
+      string = "\xC0\<\<".force_encoding("UTF-8")
+      CGI.escapeURIComponent(string).should == "%C0%3C%3C"
+    end
+
+    it "processes String bytes one by one, not characters" do
+      CGI.escapeURIComponent("β").should == "%CE%B2" # "β" bytes representation is CE B2
+    end
+
+    it "raises a TypeError with nil" do
+      -> {
+        CGI.escapeURIComponent(nil)
+      }.should raise_error(TypeError, 'no implicit conversion of nil into String')
+    end
+
+    it "encodes empty string" do
+      CGI.escapeURIComponent("").should == ""
+    end
+
+    it "encodes single whitespace" do
+      CGI.escapeURIComponent(" ").should == "%20"
+    end
+
+    it "encodes double whitespace" do
+      CGI.escapeURIComponent("  ").should == "%20%20"
+    end
+
+    it "preserves encoding" do
+      string = "whatever".encode("ASCII-8BIT")
+      CGI.escapeURIComponent(string).encoding.should == Encoding::ASCII_8BIT
+    end
+
+    it "uses implicit type conversion to String" do
+      object = Object.new
+      def object.to_str
+        "a b"
+      end
+
+      CGI.escapeURIComponent(object).should == "a%20b"
+    end
+  end
+end