Class: DecisionAgent::Dmn::DmnTester

Inherits:
Object
  • Object
show all
Defined in:
lib/decision_agent/dmn/testing.rb

Overview

DMN Testing Framework Provides testing capabilities for DMN models

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(model) ⇒ DmnTester 



14
15
16
17
18
 
# File 'lib/decision_agent/dmn/testing.rb', line 14

def initialize(model)
  @model = model
  @test_scenarios = []
  @test_results = []
end

Instance Attribute Details

#model ⇒ Object (readonly)

Returns the value of attribute model.



12
13
14
 
# File 'lib/decision_agent/dmn/testing.rb', line 12

def model
  @model
end

#test_results ⇒ Object (readonly)

Returns the value of attribute test_results.



12
13
14
 
# File 'lib/decision_agent/dmn/testing.rb', line 12

def test_results
  @test_results
end

#test_scenarios ⇒ Object (readonly)

Returns the value of attribute test_scenarios.



12
13
14
 
# File 'lib/decision_agent/dmn/testing.rb', line 12

def test_scenarios
  @test_scenarios
end

Instance Method Details

#add_scenario(decision_id:, inputs:, expected_output:, description: nil) ⇒ Object

Add a test scenario



21
22
23
24
25
26
27
28
29
30
31
 
# File 'lib/decision_agent/dmn/testing.rb', line 21

def add_scenario(decision_id:, inputs:, expected_output:, description: nil)
  scenario = {
    decision_id: decision_id,
    inputs: inputs,
    expected_output: expected_output,
    description: description || "Test #{@test_scenarios.size + 1}"
  }

  @test_scenarios << scenario
  scenario
end

#clear_scenarios ⇒ Object

Clear all test scenarios



188
189
190
191
 
# File 'lib/decision_agent/dmn/testing.rb', line 188

def clear_scenarios
  @test_scenarios = []
  @test_results = []
end

#export_scenarios_to_csv(file_path) ⇒ Object

Export test scenarios to CSV



161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
 
# File 'lib/decision_agent/dmn/testing.rb', line 161

def export_scenarios_to_csv(file_path)
  require "csv"

  return if @test_scenarios.empty?

  # Collect all unique input keys
  input_keys = @test_scenarios.flat_map { |s| s[:inputs].keys }.uniq.sort

  CSV.open(file_path, "w") do |csv|
    # Write headers
    headers = ["decision_id"] + input_keys + %w[expected_output description]
    csv << headers

    # Write scenarios
    @test_scenarios.each do |scenario|
      row = [scenario[:decision_id]]
      input_keys.each { |key| row << scenario[:inputs][key] }
      row << scenario[:expected_output]
      row << scenario[:description]
      csv << row
    end
  end

  @test_scenarios.size
end

#generate_coverage_report ⇒ Object

Generate test coverage report



97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
 
# File 'lib/decision_agent/dmn/testing.rb', line 97

def generate_coverage_report
  coverage = {
    total_decisions: @model.decisions.size,
    tested_decisions: Set.new,
    untested_decisions: [],
    decision_coverage: {}
  }

  # Track which decisions are tested
  @test_scenarios.each do |scenario|
    coverage[:tested_decisions].add(scenario[:decision_id])
  end

  # Find untested decisions
  @model.decisions.each do |decision|
    coverage[:untested_decisions] << decision.id unless coverage[:tested_decisions].include?(decision.id)

    # Calculate coverage for each decision
    decision_tests = @test_scenarios.select { |s| s[:decision_id] == decision.id }
    coverage[:decision_coverage][decision.id] = {
      test_count: decision_tests.size,
      tested: !decision_tests.empty?
    }

    # For decision tables, calculate rule coverage
    if decision.decision_table
      rule_coverage = calculate_rule_coverage(decision, decision_tests)
      coverage[:decision_coverage][decision.id][:rule_coverage] = rule_coverage
    end
  end

  coverage[:coverage_percentage] = if coverage[:total_decisions].positive?
                                     (coverage[:tested_decisions].size.to_f / coverage[:total_decisions] * 100).round(2)
                                   else
                                     0
                                   end

  coverage
end

#import_scenarios_from_csv(file_path) ⇒ Object

Import test scenarios from CSV



138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
 
# File 'lib/decision_agent/dmn/testing.rb', line 138

def import_scenarios_from_csv(file_path)
  require "csv"

  CSV.foreach(file_path, headers: true) do |row|
    inputs = {}
    row.headers.each do |header|
      next if %w[decision_id expected_output description].include?(header)

      inputs[header] = parse_value(row[header])
    end

    add_scenario(
      decision_id: row["decision_id"],
      inputs: inputs,
      expected_output: parse_value(row["expected_output"]),
      description: row["description"]
    )
  end

  @test_scenarios.size
end

#run_all_tests ⇒ Object

Run all test scenarios



34
35
36
37
38
39
40
41
42
43
 
# File 'lib/decision_agent/dmn/testing.rb', line 34

def run_all_tests
  @test_results = []

  @test_scenarios.each_with_index do |scenario, idx|
    result = run_test(scenario, idx)
    @test_results << result
  end

  generate_test_report
end

#run_test(scenario, index = nil) ⇒ Object

Run a single test scenario



46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
 
# File 'lib/decision_agent/dmn/testing.rb', line 46

def run_test(scenario, index = nil)
  decision = @model.find_decision(scenario[:decision_id])

  unless decision
    return {
      index: index,
      scenario: scenario,
      status: :error,
      error: "Decision '#{scenario[:decision_id]}' not found",
      passed: false
    }
  end

  begin
    # Create evaluator for this decision
    evaluator = Evaluators::DmnEvaluator.new(
      dmn_model: @model,
      decision_id: scenario[:decision_id]
    )

    # Evaluate with test inputs
    context = Context.new(scenario[:inputs])
    result = evaluator.evaluate(context: context)

    # Compare result with expected output
    actual_output = result.decision
    expected_output = scenario[:expected_output]

    passed = outputs_match?(actual_output, expected_output)

    {
      index: index,
      scenario: scenario,
      status: :completed,
      actual_output: actual_output,
      expected_output: expected_output,
      passed: passed,
      result: result
    }
  rescue StandardError => e
    {
      index: index,
      scenario: scenario,
      status: :error,
      error: e.message,
      passed: false
    }
  end
end