178 lines
3.7 KiB
Ruby
178 lines
3.7 KiB
Ruby
RSpec.describe Mutant::Diff do
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let(:object) { described_class }
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describe '.build' do
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subject { object.build(old_string, new_string) }
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let(:old_string) { "foo\nbar" }
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let(:new_string) { "bar\nbaz" }
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it { should eql(Mutant::Diff.new(%w[foo bar], %w[bar baz])) }
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end
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describe '#colorized_diff' do
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let(:object) { described_class.new(old, new) }
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subject { object.colorized_diff }
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context 'when there is a diff at begin of hunk' do
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let(:old) { %w[foo bar] }
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let(:new) { %w[baz bar] }
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let(:expectation) do
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[
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"@@ -1,3 +1,3 @@\n",
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Mutant::Color::RED.format("-foo\n"),
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Mutant::Color::GREEN.format("+baz\n"),
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" bar\n"
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].join
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end
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it { should eql(expectation) }
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it_should_behave_like 'an idempotent method'
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end
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end
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describe '#diff' do
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let(:object) { described_class.new(old, new) }
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subject { object.diff }
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context 'when there is a diff at begin and end' do
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let(:old) { %w[foo bar foo] }
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let(:new) { %w[baz bar baz] }
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let(:expectation) do
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strip_indent(<<-STR)
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@@ -1,4 +1,4 @@
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-foo
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+baz
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bar
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-foo
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+baz
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STR
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end
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it { should eql(expectation) }
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it_should_behave_like 'an idempotent method'
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end
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context 'when there is a diff at begin of hunk' do
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let(:old) { %w[foo bar] }
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let(:new) { %w[baz bar] }
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let(:expectation) do
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strip_indent(<<-STR)
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@@ -1,3 +1,3 @@
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-foo
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+baz
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bar
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STR
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end
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it { should eql(expectation) }
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it_should_behave_like 'an idempotent method'
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end
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context 'when there is a diff NOT at begin of hunk' do
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let(:old) { %w[foo bar] }
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let(:new) { %w[foo baz bar] }
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let(:expectation) do
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strip_indent(<<-STR)
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@@ -1,3 +1,4 @@
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foo
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+baz
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bar
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STR
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end
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it { should eql(expectation) }
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it_should_behave_like 'an idempotent method'
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end
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context 'when the diff has a long context at begin' do
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let(:old) { %w[foo bar baz boz a b c] }
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let(:new) { %w[foo bar baz boz a b c other] }
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let(:expectation) do
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strip_indent(<<-STR)
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@@ -1,8 +1,9 @@
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foo
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bar
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baz
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boz
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a
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b
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c
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+other
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STR
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end
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it { should eql(expectation) }
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it_should_behave_like 'an idempotent method'
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end
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context 'when the diff has a long context at end, deleting' do
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let(:old) { %w[other foo bar baz boz a b c] }
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let(:new) { %w[foo bar baz boz a b c] }
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let(:expectation) do
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strip_indent(<<-STR)
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@@ -1,9 +1,8 @@
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-other
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foo
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bar
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baz
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boz
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a
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b
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c
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STR
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end
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it { should eql(expectation) }
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it_should_behave_like 'an idempotent method'
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end
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context 'when the diff has a long context at end, inserting' do
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let(:old) { %w[foo bar baz boz a b c] }
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let(:new) { %w[other foo bar baz boz a b c] }
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let(:expectation) do
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strip_indent(<<-STR)
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@@ -1,8 +1,9 @@
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+other
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foo
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bar
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baz
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boz
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a
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b
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c
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STR
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end
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it { should eql(expectation) }
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it_should_behave_like 'an idempotent method'
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end
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context 'when there is no diff' do
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let(:old) { '' }
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let(:new) { '' }
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it { should be(nil) }
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it_should_behave_like 'an idempotent method'
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end
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end
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end
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