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-rw-r--r--spec/lib/range_ext_spec.rb28
1 files changed, 27 insertions, 1 deletions
diff --git a/spec/lib/range_ext_spec.rb b/spec/lib/range_ext_spec.rb
index cae637e47..eee488c91 100644
--- a/spec/lib/range_ext_spec.rb
+++ b/spec/lib/range_ext_spec.rb
@@ -1,6 +1,6 @@
require 'range_ext'
RSpec.describe Range do
- context "intersection" do
+ describe "#intersection" do
it "is nil (sic) for two distinct ranges" do
expect( (1..2).intersection(3..4) ).to be_nil
end
@@ -16,6 +16,32 @@ RSpec.describe Range do
end
end
+ describe "intersect?" do
+ it 'is true when the given range includes begin' do
+ expect( (2..4).intersect? (1..3) ).to be_truthy
+ end
+
+ it 'is true when the given range includes end' do
+ expect( (2..4).intersect? (3..5) ).to be_truthy
+ end
+
+ it 'is true when the given range includes both begin and end' do
+ expect( (2..4).intersect? (1..5) ).to be_truthy
+ end
+
+ it 'is true when the given range is the same' do
+ expect( (2..4).intersect? (2..4) ).to be_truthy
+ end
+
+ it 'is false when the given range is after' do
+ expect( (2..4).intersect? (5..7) ).to be_falsey
+ end
+
+ it 'is false when the given range is before' do
+ expect( (2..4).intersect? (0..2) ).to be_falsey
+ end
+ end
+
context "remove" do
it "is unchanged when the given range has no intersection" do
expect( (1..2).remove(3..4) ).to eq 1..2