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RSpec.shared_examples 'additional metrics query' do
include Prometheus::MetricBuilders
let(:metric_group_class) { Gitlab::Prometheus::MetricGroup }
let(:metric_class) { Gitlab::Prometheus::Metric }
let(:metric_names) { %w{metric_a metric_b} }
let(:query_range_result) do
[{ 'metric': {}, 'values': [[1488758662.506, '0.00002996364761904785'], [1488758722.506, '0.00003090239047619091']] }]
end
before do
allow(client).to receive(:label_values).and_return(metric_names)
allow(metric_group_class).to receive(:all).and_return([simple_metric_group(metrics: [simple_metric])])
end
context 'with one group where two metrics is found' do
before do
allow(metric_group_class).to receive(:all).and_return([simple_metric_group])
end
context 'some queries return results' do
before do
allow(client).to receive(:query_range).with('query_range_a', any_args).and_return(query_range_result)
allow(client).to receive(:query_range).with('query_range_b', any_args).and_return(query_range_result)
allow(client).to receive(:query_range).with('query_range_empty', any_args).and_return([])
end
it 'return group data only for queries with results' do
expected = [
{
group: 'name',
priority: 1,
metrics: [
{
title: 'title', weight: nil, y_label: 'Values', queries: [
{ query_range: 'query_range_a', result: query_range_result },
{ query_range: 'query_range_b', label: 'label', unit: 'unit', result: query_range_result }
]
}
]
}
]
expect(query_result).to eq(expected)
end
end
end
context 'with two groups with one metric each' do
let(:metrics) { [simple_metric(queries: [simple_query])] }
before do
allow(metric_group_class).to receive(:all).and_return(
[
simple_metric_group(name: 'group_a', metrics: [simple_metric(queries: [simple_query])]),
simple_metric_group(name: 'group_b', metrics: [simple_metric(title: 'title_b', queries: [simple_query('b')])])
])
allow(client).to receive(:label_values).and_return(metric_names)
end
context 'both queries return results' do
before do
allow(client).to receive(:query_range).with('query_range_a', any_args).and_return(query_range_result)
allow(client).to receive(:query_range).with('query_range_b', any_args).and_return(query_range_result)
end
it 'return group data both queries' do
expected = [
{
group: 'group_a',
priority: 1,
metrics: [
{
title: 'title',
weight: nil,
y_label: 'Values',
queries: [
{
query_range: 'query_range_a',
result: [
{
metric: {},
values: [[1488758662.506, '0.00002996364761904785'], [1488758722.506, '0.00003090239047619091']]
}
]
}
]
}
]
},
{
group: 'group_b',
priority: 1,
metrics: [
{
title: 'title_b',
weight: nil,
y_label: 'Values',
queries: [
{
query_range: 'query_range_b', result: [
{
metric: {},
values: [[1488758662.506, '0.00002996364761904785'], [1488758722.506, '0.00003090239047619091']]
}
]
}
]
}
]
}
]
expect(query_result).to eq(expected)
end
end
context 'one query returns result' do
before do
allow(client).to receive(:query_range).with('query_range_a', any_args).and_return(query_range_result)
allow(client).to receive(:query_range).with('query_range_b', any_args).and_return([])
end
it 'return group data only for query with results' do
expected = [
{
group: 'group_a',
priority: 1,
metrics: [
{
title: 'title',
weight: nil,
y_label: 'Values',
queries: [
{
query_range: 'query_range_a',
result: query_range_result
}
]
}
]
}
]
expect(query_result).to eq(expected)
end
end
end
end
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