language/versions/case_1.8.rb
language/versions/case_1.9.rb
@@ -3,22 +3,34 @@ require File.dirname(__FILE__) + '/../spec_helper'
describe "The 'case'-construct" do
it "evaluates the body of the when clause matching the case target expression" do
case 1
- when 2: false
- when 1: true
+ when 2; false
+ when 1; true
end.should == true
end
it "evaluates the body of the when clause whose array expression includes the case target expression" do
case 2
- when 3, 4: false
- when 1, 2: true
+ when 3, 4; false
+ when 1, 2; true
end.should == true
end
+ it "evaluates the body of the when clause in left-to-right order if it's an array expression" do
+ @calls = []
+ def foo; @calls << :foo; end
+ def bar; @calls << :bar; end
+
+ case true
+ when foo, bar;
+ end
+
+ @calls.should == [:foo, :bar]
+ end
+
it "evaluates the body of the when clause whose range expression includes the case target expression" do
case 5
- when 21..30: false
- when 1..20: true
+ when 21..30; false
+ when 1..20; true
end.should == true
end
@@ -28,19 +40,19 @@ describe "The 'case'-construct" do
when "b"
end.should == nil
end
-
+
it "evaluates the 'else'-body when no other expression matches" do
case "c"
- when "a": 'foo'
- when "b": 'bar'
+ when "a"; 'foo'
+ when "b"; 'bar'
else 'zzz'
end.should == 'zzz'
end
-
+
it "returns nil when no expression matches and 'else'-body is empty" do
case "c"
- when "a": "a"
- when "b": "b"
+ when "a"; "a"
+ when "b"; "b"
else
end.should == nil
end
@@ -56,27 +68,13 @@ describe "The 'case'-construct" do
end.should == 2
end
- it "returns the statement following ':'" do
- case "a"
- when "a": 'foo'
- when "b": 'bar'
- end.should == 'foo'
- end
-
it "returns the statement following 'then'" do
case "a"
when "a" then 'foo'
when "b" then 'bar'
end.should == 'foo'
end
-
- it "allows mixing ':' and 'then'" do
- case "b"
- when "a": 'foo'
- when "b" then 'bar'
- end.should == 'bar'
- end
-
+
it "tests classes with case equality" do
case "a"
when String
@@ -85,14 +83,14 @@ describe "The 'case'-construct" do
'bar'
end.should == 'foo'
end
-
+
it "tests with matching regexps" do
case "hello"
- when /abc/: false
- when /^hell/: true
+ when /abc/; false
+ when /^hell/; true
end.should == true
end
-
+
it "does not test with equality when given classes" do
case :symbol.class
when Symbol
@@ -103,7 +101,7 @@ describe "The 'case'-construct" do
"foo"
end.should == "foo"
end
-
+
it "takes lists of values" do
case 'z'
when 'a', 'b', 'c', 'd'
@@ -145,10 +143,11 @@ describe "The 'case'-construct" do
end.should == "foo"
end
+ # MR: critical
it "concats arrays before expanding them" do
a = ['a', 'b', 'c', 'd']
b = ['f']
-
+
case 'f'
when 'f', *a|b
"foo"
@@ -156,14 +155,14 @@ describe "The 'case'-construct" do
"bar"
end.should == "foo"
end
-
+
it "never matches when clauses with no values" do
case nil
when *[]
"foo"
end.should == nil
end
-
+
it "lets you define a method after the case statement" do
case (def foo; 'foo'; end; 'f')
when 'a'
@@ -172,7 +171,7 @@ describe "The 'case'-construct" do
'bar'
end.should == 'bar'
end
-
+
it "raises a SyntaxError when 'else' is used when no 'when' is given" do
lambda {
eval <<-CODE
@@ -190,7 +189,7 @@ describe "The 'case'-construct" do
case 4
else
true
- when 4: false
+ when 4; false
end
CODE
}.should raise_error(SyntaxError)
@@ -246,42 +245,42 @@ end
describe "The 'case'-construct with no target expression" do
it "evaluates the body of the first clause when at least one of its condition expressions is true" do
- case
- when true, false: 'foo'
- end.should == 'foo'
- end
-
+ case
+ when true, false; 'foo'
+ end.should == 'foo'
+ end
+
it "evaluates the body of the first when clause that is not false/nil" do
case
- when false: 'foo'
- when 2: 'bar'
- when 1 == 1: 'baz'
+ when false; 'foo'
+ when 2; 'bar'
+ when 1 == 1; 'baz'
end.should == 'bar'
-
+
case
- when false: 'foo'
- when nil: 'foo'
- when 1 == 1: 'bar'
+ when false; 'foo'
+ when nil; 'foo'
+ when 1 == 1; 'bar'
end.should == 'bar'
end
-
+
it "evaluates the body of the else clause if all when clauses are false/nil" do
case
- when false: 'foo'
- when nil: 'foo'
- when 1 == 2: 'bar'
+ when false; 'foo'
+ when nil; 'foo'
+ when 1 == 2; 'bar'
else 'baz'
end.should == 'baz'
end
-
+
it "evaluates multiple conditional expressions as a boolean disjunction" do
case
- when true, false: 'foo'
+ when true, false; 'foo'
else 'bar'
end.should == 'foo'
case
- when false, true: 'foo'
+ when false, true; 'foo'
else 'bar'
end.should == 'foo'
end
@@ -307,3 +306,5 @@ describe "The 'case'-construct with no target expression" do
end.should == 'good'
end
end
+
+language_version __FILE__, "case"
\ No newline at end of file
language/case_spec.rb
4b934fe013246acbf093c1ac59d5be901201694f
Eloy Duran
eloy.de.enige@gmail.com
http://github.com/rubyspec/rubyspec/commit/c7353c4d51ba007b3c33cbb7b3ec193067b1ce63
c7353c4d51ba007b3c33cbb7b3ec193067b1ce63
2009-03-30T14:55:28-07:00
2009-03-30T14:15:08-07:00
Fixed 1.9 failures in the 'case' spec. Added an example for execution order in the when clause and an example of multiple splats in the when clause (1.9).
d45b1254904b2eb5bfdc7f001241fdbc5308df0f
Eloy Duran
eloy.de.enige@gmail.com