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Add all volume strategies to backtest. #235

Merged
merged 1 commit into from
Oct 15, 2024
Merged

Add all volume strategies to backtest. #235

merged 1 commit into from
Oct 15, 2024

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cinar
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@cinar cinar commented Oct 15, 2024

Describe Request

Add all volume strategies to backtest.

Change Type

New feature.

Summary by CodeRabbit

  • New Features

    • Enhanced backtesting capabilities with the addition of volume analysis strategies.
    • Introduced the Money Flow Index Strategy, providing more detailed information on buy and sell points.
  • Bug Fixes

    • Improved the output format of the Money Flow Index Strategy name to include both sell and buy values.
  • Documentation

    • Updated method signatures and functionality descriptions to reflect the new and modified strategies.

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coderabbitai bot commented Oct 15, 2024

Walkthrough

The pull request introduces updates to the indicator-backtest command line program by adding a new import for the volume strategy package and modifying the backtester.Strategies slice to include strategies from this package. Additionally, the MoneyFlowIndexStrategy class's Name method is enhanced to display both SellAt and BuyAt values. The AllStrategies function in the volume package is also updated to return a list that includes the new money flow index strategy.

Changes

File Path Change Summary
cmd/indicator-backtest/main.go Added import for volume package and modified backtester.Strategies to include volume.AllStrategies().
strategy/volume/money_flow_index_strategy.go Updated Name method to format return string to include both SellAt and BuyAt values.
strategy/volume/volume.go Modified AllStrategies to return a non-empty slice including NewMoneyFlowIndexStrategy().

Possibly related PRs

  • Envelope trend indicator and Envelope strategy are added. #233: The changes in the main PR involve the addition of the volume strategy package and the AllStrategies method, which is directly related to the modifications in the volume package, specifically the inclusion of NewMoneyFlowIndexStrategy() in the AllStrategies function.

Poem

🐰 In the garden where strategies bloom,
A new volume's added, dispelling the gloom.
With SellAt and BuyAt, the data's more bright,
Backtesting's a dance, in the moon's gentle light.
Hooray for the changes, let's hop and let's cheer,
For the magic of numbers is finally here! 🌼


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Codecov Report

Attention: Patch coverage is 25.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 92.83%. Comparing base (8958daf) to head (10571ee).

Files with missing lines Patch % Lines
strategy/volume/volume.go 0.00% 2 Missing ⚠️
cmd/indicator-backtest/main.go 0.00% 1 Missing ⚠️
Additional details and impacted files
@@            Coverage Diff             @@
##           master     #235      +/-   ##
==========================================
- Coverage   92.88%   92.83%   -0.05%     
==========================================
  Files         167      167              
  Lines        4298     4300       +2     
==========================================
  Hits         3992     3992              
- Misses        247      249       +2     
  Partials       59       59              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

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Actionable comments posted: 1

🧹 Outside diff range and nitpick comments (2)
cmd/indicator-backtest/main.go (1)

74-74: LGTM: Volume strategies added to backtester.

The addition of volume strategies to backtester.Strategies is consistent with the PR objective and follows the existing pattern for strategy inclusion.

Consider grouping all strategy additions together for better readability. You could create a slice of strategy packages and iterate over it to add all strategies, like this:

strategyPackages := []struct {
    name string
    strategies func() []Strategy
}{
    {"compound", compound.AllStrategies},
    {"momentum", momentum.AllStrategies},
    {"strategy", strategy.AllStrategies},
    {"trend", trend.AllStrategies},
    {"volatility", volatility.AllStrategies},
    {"volume", volume.AllStrategies},
}

for _, pkg := range strategyPackages {
    backtester.Strategies = append(backtester.Strategies, pkg.strategies()...)
}

This approach would make it easier to add or remove strategy packages in the future.

strategy/volume/money_flow_index_strategy.go (1)

57-57: Approved: Improved Name method with a suggestion for formatting

The change to include both SellAt and BuyAt values in the strategy name is a good improvement. It provides more complete information about the strategy's parameters, which is helpful for users.

Consider using %.2f instead of %f to limit the decimal places for better readability:

return fmt.Sprintf("Money Flow Index Strategy (%.2f,%.2f)", m.SellAt, m.BuyAt)

This will display the values with two decimal places, which is usually sufficient for these parameters.

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Files that changed from the base of the PR and between 8958daf and 10571ee.

📒 Files selected for processing (3)
  • cmd/indicator-backtest/main.go (2 hunks)
  • strategy/volume/money_flow_index_strategy.go (1 hunks)
  • strategy/volume/volume.go (1 hunks)
🧰 Additional context used
🔇 Additional comments (4)
strategy/volume/volume.go (1)

27-29: LGTM! The Money Flow Index strategy is now included.

The addition of NewMoneyFlowIndexStrategy() to the returned slice is a positive change that aligns with the PR objective of adding volume strategies to the backtest.

Consider adding a function comment.

To improve code documentation, consider adding a comment explaining the purpose of this function and what strategies it returns.

Example:

// AllStrategies returns all available volume strategies.
// Currently, it returns the Money Flow Index strategy.
func AllStrategies() []strategy.Strategy {
    // ... (existing code)
}

Review the function name "AllStrategies".

The function name implies it returns all available strategies, but it currently returns only one. Consider either:

  1. Renaming the function to better reflect its current behavior (e.g., DefaultVolumeStrategies), or
  2. Ensuring all available volume strategies are included in the returned slice.

Verify completeness of volume strategies.

Let's check if there are other volume strategies that should be included:

✅ Verification successful

LGTM! The Money Flow Index strategy is now included.

The addition of NewMoneyFlowIndexStrategy() to the returned slice aligns with the PR objective of adding volume strategies to the backtest.

Function Completeness Confirmed.

No additional volume strategies were found in the strategy/volume package. The function name AllStrategies appropriately reflects the current implementation.

Consider adding a function comment.

To improve code documentation, add a comment explaining the purpose of this function and the strategies it returns.

// AllStrategies returns all available volume strategies.
// Currently, it returns the Money Flow Index strategy.
func AllStrategies() []strategy.Strategy {
    return []strategy.Strategy{
        NewMoneyFlowIndexStrategy(),
    }
}
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Search for other volume strategy implementations

# Test: Look for other strategy implementations in the volume package
echo "Other potential volume strategies:"
ast-grep --lang go --pattern 'type $_ struct { $$$
  strategy.Base
  $$$
}' strategy/volume

Length of output: 172

cmd/indicator-backtest/main.go (1)

21-21: LGTM: New import for volume strategies added.

The addition of the volume package import is consistent with the PR objective and follows the existing import structure.

strategy/volume/money_flow_index_strategy.go (2)

Line range hint 1-138: Summary of changes and impact

The modification to the Name method in the MoneyFlowIndexStrategy struct is a positive improvement. It now provides more comprehensive information about the strategy by including both the SellAt and BuyAt parameters in the returned string.

Key points:

  1. The change is localized to the Name method and doesn't alter the core functionality of the strategy.
  2. The Compute and Report methods remain unchanged, preserving the strategy's behavior.
  3. The additional information in the strategy name enhances clarity for users without introducing any apparent drawbacks.

Overall, this change is beneficial and aligns well with the strategy's design. Just ensure to verify the usage of the strategy name in other parts of the codebase to prevent any unintended side effects.


57-57: Verify usage of strategy name in the codebase

The change in the Name method now includes both SellAt and BuyAt values. While this doesn't affect the functionality within this file, it's important to verify that this change doesn't impact any code that might be using the strategy name for identification or comparison purposes elsewhere in the codebase.

Run the following script to check for any potential impacts:

Please review the results to ensure that the change doesn't introduce any unexpected behavior in other parts of the codebase.

✅ Verification successful

Strategy name usage verified and no external impacts detected

The change in the Name method of MoneyFlowIndexStrategy has been thoroughly verified. The updated string representation is confined to the strategy's definition, its tests, and documentation. No other parts of the codebase are affected by this change.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Search for uses of MoneyFlowIndexStrategy name in the codebase

# Test: Search for direct uses of the strategy name string
echo "Searching for direct uses of the strategy name:"
rg --type go "Money Flow Index Strategy" -C 3

# Test: Search for uses of the Name() method
echo "Searching for uses of the Name() method:"
rg --type go "MoneyFlowIndexStrategy.*Name\(\)" -C 3

# Test: Search for potential string comparisons with the strategy name
echo "Searching for potential string comparisons:"
rg --type go "== \"Money Flow Index Strategy" -C 3
rg --type go "strings\.Contains.*\"Money Flow Index Strategy" -C 3

Length of output: 1593


Script:

#!/bin/bash
# Description: Perform a comprehensive search for any references to Money Flow Index Strategy

# Search for dynamic references using variables
echo "Searching for dynamic references to the strategy name:"
rg --type go 'MoneyFlowIndexStrategy' -C 3

# Search in test files for any related test cases
echo "Searching in test files for Money Flow Index Strategy:"
rg --type go 'Money Flow Index Strategy' -C 3 --glob '*_test.go'

# Search in documentation files for mentions
echo "Searching in documentation for Money Flow Index Strategy:"
rg 'Money Flow Index Strategy' README.md docs/* -C 3

Length of output: 7738

cmd/indicator-backtest/main.go Show resolved Hide resolved
@cinar cinar merged commit 1cf5812 into master Oct 15, 2024
6 checks passed
@cinar cinar deleted the volume-strategies branch October 15, 2024 01:33
@github-actions github-actions bot locked and limited conversation to collaborators Oct 15, 2024
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2 participants