shard-spectator/spec/root_example_group_spec.cr

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require "./spec_helper"
def new_root_group(hooks = Spectator::ExampleHooks.empty, conditions = Spectator::ExampleConditions.empty)
Spectator::RootExampleGroup.new(hooks, conditions).tap do |group|
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group.children = [] of Spectator::ExampleComponent
end
end
def root_group_with_examples(example_count = 5)
group = Spectator::RootExampleGroup.new(Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty)
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examples = [] of Spectator::Example
group.children = Array(Spectator::ExampleComponent).new(example_count) do
PassingExample.new(group, Spectator::Internals::SampleValues.empty).tap do |example|
examples << example
end
end
{group, examples}
end
def root_group_with_sub_groups(sub_group_count = 5, example_count = 5)
group = Spectator::RootExampleGroup.new(Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty)
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examples = [] of Spectator::Example
group.children = Array(Spectator::ExampleComponent).new(sub_group_count) do |i|
Spectator::NestedExampleGroup.new(i.to_s, group, Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty).tap do |sub_group|
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sub_group.children = Array(Spectator::ExampleComponent).new(example_count) do
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PassingExample.new(group, Spectator::Internals::SampleValues.empty).tap do |example|
examples << example
end
end
end
end
{group, examples}
end
def complex_root_group
group = Spectator::RootExampleGroup.new(Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty)
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examples = [] of Spectator::Example
group.children = Array(Spectator::ExampleComponent).new(10) do |i|
if i % 2 == 0
PassingExample.new(group, Spectator::Internals::SampleValues.empty).tap do |example|
examples << example
end
else
Spectator::NestedExampleGroup.new(i.to_s, group, Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty).tap do |sub_group1|
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sub_group1.children = Array(Spectator::ExampleComponent).new(10) do |j|
if i % 2 == 0
PassingExample.new(sub_group1, Spectator::Internals::SampleValues.empty).tap do |example|
examples << example
end
else
Spectator::NestedExampleGroup.new(j.to_s, sub_group1, Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty).tap do |sub_group2|
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sub_group2.children = Array(Spectator::ExampleComponent).new(5) do
PassingExample.new(sub_group2, Spectator::Internals::SampleValues.empty).tap do |example|
examples << example
end
end
end
end
end
end
end
end
{group, examples}
end
describe Spectator::RootExampleGroup do
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describe "#run_before_hooks" do
it "runs a before_all hook" do
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called = false
hooks = new_hooks(before_all: ->{ called = true; nil })
group = new_root_group(hooks)
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group.run_before_hooks
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called.should be_true
end
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it "runs a before_each hook" do
called = false
hooks = new_hooks(before_each: ->{ called = true; nil })
group = new_root_group(hooks)
group.run_before_hooks
called.should be_true
end
it "runs multiple before_all hooks" do
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call_count = 0
hooks = new_hooks(before_all: [
->{ call_count += 1; nil },
->{ call_count += 2; nil },
->{ call_count += 3; nil },
])
group = new_root_group(hooks)
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group.run_before_hooks
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call_count.should eq(6)
end
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it "runs multiple before_each hooks" do
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call_count = 0
hooks = new_hooks(before_each: [
->{ call_count += 1; nil },
->{ call_count += 2; nil },
->{ call_count += 3; nil },
])
group = new_root_group(hooks)
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group.run_before_hooks
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call_count.should eq(6)
end
it "runs hooks in the correct order" do
calls = [] of Symbol
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hooks = new_hooks(before_all: [
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->{ calls << :a; nil },
->{ calls << :b; nil },
->{ calls << :c; nil },
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],
before_each: [
->{ calls << :d; nil },
->{ calls << :e; nil },
->{ calls << :f; nil },
])
group = new_root_group(hooks)
group.run_before_hooks
calls.should eq(%i[a b c d e f])
end
it "runs the before_all hooks once" do
call_count = 0
hooks = new_hooks(before_all: ->{ call_count += 1; nil })
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group = new_root_group(hooks)
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2.times { group.run_before_hooks }
call_count.should eq(1)
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end
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it "runs the before_each hooks multiple times" do
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call_count = 0
hooks = new_hooks(before_each: ->{ call_count += 1; nil })
group = new_root_group(hooks)
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2.times { group.run_before_hooks }
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call_count.should eq(2)
end
end
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describe "#run_after_hooks" do
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# No children are used for most of these examples.
# That's because `[].all?` is always true.
# Which means that all examples are considered finished, since there are none.
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it "runs a single after_all hook" do
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called = false
hooks = new_hooks(after_all: ->{ called = true; nil })
group = new_root_group(hooks)
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group.run_after_hooks
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called.should be_true
end
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it "runs a single after_each hook" do
called = false
hooks = new_hooks(after_each: ->{ called = true; nil })
group = new_root_group(hooks)
group.run_after_hooks
called.should be_true
end
it "runs multiple after_all hooks" do
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call_count = 0
hooks = new_hooks(after_all: [
->{ call_count += 1; nil },
->{ call_count += 2; nil },
->{ call_count += 3; nil },
])
group = new_root_group(hooks)
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group.run_after_hooks
call_count.should eq(6)
end
it "runs multiple after_each hooks" do
call_count = 0
hooks = new_hooks(after_all: [
->{ call_count += 1; nil },
->{ call_count += 2; nil },
->{ call_count += 3; nil },
])
group = new_root_group(hooks)
group.run_after_hooks
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call_count.should eq(6)
end
it "runs hooks in the correct order" do
calls = [] of Symbol
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hooks = new_hooks(after_each: [
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->{ calls << :a; nil },
->{ calls << :b; nil },
->{ calls << :c; nil },
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],
after_all: [
->{ calls << :d; nil },
->{ calls << :e; nil },
->{ calls << :f; nil },
])
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group = new_root_group(hooks)
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group.run_after_hooks
calls.should eq(%i[a b c d e f])
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end
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it "runs the after_all hooks once" do
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call_count = 0
hooks = new_hooks(after_all: ->{ call_count += 1; nil })
group = new_root_group(hooks)
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2.times { group.run_after_hooks }
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call_count.should eq(1)
end
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it "runs the after_each hooks multiple times" do
call_count = 0
hooks = new_hooks(after_each: ->{ call_count += 1; nil })
group = new_root_group(hooks)
2.times { group.run_after_hooks }
call_count.should eq(2)
end
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context "with no examples finished" do
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it "doesn't run the after_all hooks" do
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called = false
hooks = new_hooks(after_all: ->{ called = true; nil })
group = Spectator::RootExampleGroup.new(hooks, Spectator::ExampleConditions.empty)
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group.children = Array(Spectator::ExampleComponent).new(5) do
PassingExample.new(group, Spectator::Internals::SampleValues.empty)
end
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group.run_after_hooks
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called.should be_false
end
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it "runs the after_each hooks" do
called = false
hooks = new_hooks(after_each: ->{ called = true; nil })
group = Spectator::RootExampleGroup.new(hooks, Spectator::ExampleConditions.empty)
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group.children = Array(Spectator::ExampleComponent).new(5) do
PassingExample.new(group, Spectator::Internals::SampleValues.empty)
end
group.run_after_hooks
called.should be_true
end
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end
context "with some examples finished" do
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it "doesn't run the after_all hooks" do
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called = false
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examples = [] of Spectator::Example
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hooks = new_hooks(after_all: ->{ called = true; nil })
group = Spectator::RootExampleGroup.new(hooks, Spectator::ExampleConditions.empty)
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group.children = Array(Spectator::ExampleComponent).new(5) do
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PassingExample.new(group, Spectator::Internals::SampleValues.empty).tap do |example|
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examples << example
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end
end
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examples.each_with_index do |example, index|
Spectator::Internals::Harness.run(example) if index % 2 == 0
end
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group.run_after_hooks
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called.should be_false
end
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it "runs the after_each hooks" do
called = false
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examples = [] of Spectator::Example
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hooks = new_hooks(after_each: ->{ called = true; nil })
group = Spectator::RootExampleGroup.new(hooks, Spectator::ExampleConditions.empty)
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group.children = Array(Spectator::ExampleComponent).new(5) do
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PassingExample.new(group, Spectator::Internals::SampleValues.empty).tap do |example|
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examples << example
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end
end
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examples.each_with_index do |example, index|
Spectator::Internals::Harness.run(example) if index % 2 == 0
end
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group.run_after_hooks
called.should be_true
end
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end
end
describe "#wrap_around_each_hooks" do
it "wraps the block" do
called = false
wrapper = new_root_group.wrap_around_each_hooks do
called = true
end
wrapper.call
called.should be_true
end
it "wraps a proc" do
called = false
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hooks = new_hooks(around_each: ->(proc : ->) { called = true; proc.call })
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wrapper = new_root_group(hooks).wrap_around_each_hooks { }
wrapper.call
called.should be_true
end
it "wraps multiple procs" do
call_count = 0
hooks = new_hooks(around_each: [
->(proc : ->) { call_count += 1; proc.call },
->(proc : ->) { call_count += 2; proc.call },
->(proc : ->) { call_count += 3; proc.call },
])
wrapper = new_root_group(hooks).wrap_around_each_hooks { }
wrapper.call
call_count.should eq(6)
end
it "wraps procs in the correct order" do
calls = [] of Symbol
hooks = new_hooks(around_each: [
->(proc : ->) { calls << :a; proc.call },
->(proc : ->) { calls << :b; proc.call },
->(proc : ->) { calls << :c; proc.call },
])
wrapper = new_root_group(hooks).wrap_around_each_hooks { }
wrapper.call
calls.should eq(%i[a b c])
end
end
describe "#run_pre_conditions" do
it "runs a condition" do
called = false
conditions = new_conditions(pre: ->{ called = true; nil })
group = new_root_group(conditions: conditions)
group.run_pre_conditions
called.should be_true
end
it "runs multiple conditions" do
call_count = 0
conditions = new_conditions(pre: [
->{ call_count += 1; nil },
->{ call_count += 2; nil },
->{ call_count += 3; nil },
])
group = new_root_group(conditions: conditions)
group.run_pre_conditions
call_count.should eq(6)
end
it "runs conditions in the correct order" do
calls = [] of Symbol
conditions = new_conditions(pre: [
->{ calls << :a; nil },
->{ calls << :b; nil },
->{ calls << :c; nil },
])
group = new_root_group(conditions: conditions)
group.run_pre_conditions
calls.should eq(%i[a b c])
end
it "runs the conditions multiple times" do
call_count = 0
conditions = new_conditions(pre: ->{ call_count += 1; nil })
group = new_root_group(conditions: conditions)
2.times { group.run_pre_conditions }
call_count.should eq(2)
end
end
describe "#run_post_conditions" do
it "runs a single condition" do
called = false
conditions = new_conditions(post: ->{ called = true; nil })
group = new_root_group(conditions: conditions)
group.run_post_conditions
called.should be_true
end
it "runs multiple conditions" do
call_count = 0
conditions = new_conditions(post: [
->{ call_count += 1; nil },
->{ call_count += 2; nil },
->{ call_count += 3; nil },
])
group = new_root_group(conditions: conditions)
group.run_post_conditions
call_count.should eq(6)
end
it "runs conditions in the correct order" do
calls = [] of Symbol
conditions = new_conditions(post: [
->{ calls << :a; nil },
->{ calls << :b; nil },
->{ calls << :c; nil },
])
group = new_root_group(conditions: conditions)
group.run_post_conditions
calls.should eq(%i[a b c])
end
it "runs the conditions multiple times" do
call_count = 0
conditions = new_conditions(post: ->{ call_count += 1; nil })
group = new_root_group(conditions: conditions)
2.times { group.run_post_conditions }
call_count.should eq(2)
end
end
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describe "#to_s" do
it "is empty" do
new_root_group.to_s.should be_empty
end
end
describe "#children" do
it "raises an error when not set" do
group = Spectator::RootExampleGroup.new(Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty)
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expect_raises(Exception) { group.children }
end
it "returns the expected set" do
group = Spectator::RootExampleGroup.new(Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty)
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children = Array(Spectator::ExampleComponent).new(5) do
PassingExample.new(group, Spectator::Internals::SampleValues.empty)
end
group.children = children
group.children.should eq(children)
end
end
describe "#children=" do
it "raises an error trying to reset" do
group = Spectator::RootExampleGroup.new(Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty)
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children = Array(Spectator::ExampleComponent).new(5) do
PassingExample.new(group, Spectator::Internals::SampleValues.empty)
end
group.children = children
expect_raises(Exception) { group.children = children }
end
end
describe "#each" do
it "yields each child" do
group = Spectator::RootExampleGroup.new(Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty)
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group.children = Array(Spectator::ExampleComponent).new(5) do |i|
if i % 2 == 0
PassingExample.new(group, Spectator::Internals::SampleValues.empty)
else
Spectator::NestedExampleGroup.new(i.to_s, group, Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty).tap do |sub_group|
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sub_group.children = [] of Spectator::ExampleComponent
end
end
end
group.to_a.should eq(group.children)
end
it "doesn't yield children of children" do
group = Spectator::RootExampleGroup.new(Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty)
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group.children = Array(Spectator::ExampleComponent).new(5) do |i|
if i % 2 == 0
PassingExample.new(group, Spectator::Internals::SampleValues.empty)
else
Spectator::NestedExampleGroup.new(i.to_s, group, Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty).tap do |sub_group|
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sub_group.children = Array(Spectator::ExampleComponent).new(5) do
PassingExample.new(sub_group, Spectator::Internals::SampleValues.empty)
end
end
end
end
group.to_a.should eq(group.children)
end
end
describe "#each : Iterator" do
it "iterates over each child" do
group = Spectator::RootExampleGroup.new(Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty)
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group.children = Array(Spectator::ExampleComponent).new(5) do |i|
if i % 2 == 0
PassingExample.new(group, Spectator::Internals::SampleValues.empty)
else
Spectator::NestedExampleGroup.new(i.to_s, group, Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty).tap do |sub_group|
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sub_group.children = [] of Spectator::ExampleComponent
end
end
end
group.each.to_a.should eq(group.children)
end
it "doesn't iterate over children of children" do
group = Spectator::RootExampleGroup.new(Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty)
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group.children = Array(Spectator::ExampleComponent).new(5) do |i|
if i % 2 == 0
PassingExample.new(group, Spectator::Internals::SampleValues.empty)
else
Spectator::NestedExampleGroup.new(i.to_s, group, Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty).tap do |sub_group|
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sub_group.children = Array(Spectator::ExampleComponent).new(5) do
PassingExample.new(sub_group, Spectator::Internals::SampleValues.empty)
end
end
end
end
group.each.to_a.should eq(group.children)
end
end
describe "#example_count" do
context "with no examples" do
it "is zero" do
new_root_group.example_count.should eq(0)
end
end
context "with empty sub-groups" do
it "is zero" do
group = Spectator::RootExampleGroup.new(Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty)
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group.children = Array(Spectator::ExampleComponent).new(5) do |i|
Spectator::NestedExampleGroup.new(i.to_s, group, Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty)
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end
group.example_count.should eq(0)
end
end
context "with direct descendant examples" do
it "equals the number of examples" do
example_count = 10
group, _ = root_group_with_examples(example_count)
group.example_count.should eq(example_count)
end
end
context "with examples sub-groups" do
it "equals the total number of examples" do
sub_group_count = 3
example_count = 10
group, _ = root_group_with_sub_groups(sub_group_count, example_count)
group.example_count.should eq(sub_group_count * example_count)
end
end
context "with examples at all levels" do
it "equals the total number of examples" do
group, examples = complex_root_group
group.example_count.should eq(examples.size)
end
end
end
describe "#[]" do
context "when empty" do
it "raises an error" do
group = new_root_group
expect_raises(IndexError) { group[0] }
end
end
context "with direct descendant examples" do
context "given 0" do
it "returns the first example" do
group, examples = root_group_with_examples
group[0].should eq(examples.first)
end
end
context "given -1" do
it "returns the last example" do
group, examples = root_group_with_examples
group[-1].should eq(examples.last)
end
end
context "given an in-bounds positive index" do
it "returns the expected example" do
group, examples = root_group_with_examples(10)
group[3].should eq(examples[3])
end
end
context "given an in-bounds negative index" do
it "returns the expected example" do
group, examples = root_group_with_examples(10)
group[-3].should eq(examples[-3])
end
end
context "an out-of-bounds positive index" do
it "raises an index error" do
group, _ = root_group_with_examples(10)
expect_raises(IndexError) { group[15] }
end
it "handles off-by-one" do
group, _ = root_group_with_examples(10)
expect_raises(IndexError) { group[10] }
end
end
context "an out-of-bounds negative index" do
it "raises an index error" do
group, _ = root_group_with_examples(10)
expect_raises(IndexError) { group[-15] }
end
it "handles off-by-one" do
group, _ = root_group_with_examples(10)
expect_raises(IndexError) { group[-11] }
end
end
end
context "with examples only in sub-groups" do
context "given 0" do
it "returns the first example" do
group, examples = root_group_with_sub_groups
group[0].should eq(examples.first)
end
end
context "given -1" do
it "returns the last example" do
group, examples = root_group_with_sub_groups
group[-1].should eq(examples.last)
end
end
context "given an in-bounds positive index" do
it "returns the expected example" do
group, examples = root_group_with_sub_groups(10, 2)
group[6].should eq(examples[6])
end
end
context "given an in-bounds negative index" do
it "returns the expected example" do
group, examples = root_group_with_sub_groups(10, 2)
group[-6].should eq(examples[-6])
end
end
context "an out-of-bounds positive index" do
it "raises an index error" do
group, _ = root_group_with_sub_groups(10, 2)
expect_raises(IndexError) { group[25] }
end
it "handles off-by-one" do
group, _ = root_group_with_sub_groups(10, 2)
expect_raises(IndexError) { group[20] }
end
end
context "an out-of-bounds negative index" do
it "raises an index error" do
group, _ = root_group_with_sub_groups(10, 2)
expect_raises(IndexError) { group[-25] }
end
it "handles off-by-one" do
group, _ = root_group_with_sub_groups(10, 2)
expect_raises(IndexError) { group[-21] }
end
end
end
context "with examples at all levels" do
context "given 0" do
it "returns the first example" do
group, examples = complex_root_group
group[0].should eq(examples.first)
end
end
context "given -1" do
it "returns the last example" do
group, examples = complex_root_group
group[-1].should eq(examples.last)
end
end
context "given an in-bounds positive index" do
it "returns the expected example" do
group, examples = complex_root_group
group[42].should eq(examples[42])
end
end
context "given an in-bounds negative index" do
it "returns the expected example" do
group, examples = complex_root_group
group[-42].should eq(examples[-42])
end
end
context "an out-of-bounds positive index" do
it "raises an index error" do
group, examples = complex_root_group
expect_raises(IndexError) { group[examples.size + 5] }
end
it "handles off-by-one" do
group, examples = complex_root_group
expect_raises(IndexError) { group[examples.size] }
end
end
context "an out-of-bounds negative index" do
it "raises an index error" do
group, examples = complex_root_group
expect_raises(IndexError) { group[-examples.size - 5] }
end
it "handles off-by-one" do
group, examples = complex_root_group
expect_raises(IndexError) { group[-examples.size - 1] }
end
end
end
context "with only sub-groups and no examples" do
it "raises an index error" do
group = Spectator::RootExampleGroup.new(Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty)
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group.children = Array(Spectator::ExampleComponent).new(5) do |i|
Spectator::NestedExampleGroup.new(i.to_s, group, Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty).tap do |sub_group|
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sub_group.children = [] of Spectator::ExampleComponent
end
end
expect_raises(IndexError) { group[0] }
end
end
end
describe "#finished?" do
context "with no children" do
it "is true" do
new_root_group.finished?.should be_true
end
end
context "with all unfinished children" do
it "is false" do
group, _ = root_group_with_examples
group.finished?.should be_false
end
end
context "with some finished children" do
it "is false" do
group, examples = root_group_with_examples
examples.each_with_index do |example, index|
Spectator::Internals::Harness.run(example) if index % 2 == 0
end
group.finished?.should be_false
end
end
context "with all finished children" do
it "is true" do
group, examples = root_group_with_examples
examples.each do |example|
Spectator::Internals::Harness.run(example)
end
group.finished?.should be_true
end
end
context "with a sub-group" do
context "with no children" do
it "is true" do
group = Spectator::RootExampleGroup.new(Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty)
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group.children = Array(Spectator::ExampleComponent).new(5) do |i|
Spectator::NestedExampleGroup.new(i.to_s, group, Spectator::ExampleHooks.empty, Spectator::ExampleConditions.empty).tap do |sub_group|
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sub_group.children = [] of Spectator::ExampleComponent
end
end
group.finished?.should be_true
end
end
context "with all unfinished children" do
it "is false" do
group, _ = root_group_with_sub_groups
group.finished?.should be_false
end
end
context "with some finished children" do
it "is false" do
group, examples = root_group_with_sub_groups
examples.each_with_index do |example, index|
Spectator::Internals::Harness.run(example) if index % 2 == 0
end
group.finished?.should be_false
end
end
context "with all finished children" do
it "is true" do
group, examples = root_group_with_sub_groups
examples.each do |example|
Spectator::Internals::Harness.run(example)
end
group.finished?.should be_true
end
end
end
end
describe "#symbolic?" do
it "is true" do
new_root_group.symbolic?.should be_true
end
end
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end