delta

type CoverageSnap struct {
	LinesPct    float64 `json:"lines_pct"`
	LinesCov    int     `json:"lines_covered"`
	LinesTotal  int     `json:"lines_total"`
	BranchPct   float64 `json:"branch_pct"`
	BranchCov   int     `json:"branch_covered"`
	BranchTotal int     `json:"branch_total"`
	FuncPct     float64 `json:"func_pct"`
	FuncCov     int     `json:"func_covered"`
	FuncTotal   int     `json:"func_total"`
	// Files maps each file path to its line coverage percentage.
	// Used to produce per-file deltas when comparing two snapshots.
	Files map[string]float64 `json:"files,omitempty"`
}

type Delta struct {
	// Tests
	TotalDelta   int
	PassedDelta  int
	FailedDelta  int
	SkippedDelta int
	HasTests     bool

	// Coverage — overall
	LinesPctDelta  float64
	BranchPctDelta float64
	FuncPctDelta   float64
	HasCoverage    bool

	// Coverage — per-file line coverage deltas (path → Δ%).
	// Only populated for files present in both baseline and current.
	FileDeltas map[string]float64
}

type Snapshot struct {
	Version   int    `json:"version"`
	Timestamp string `json:"timestamp"`
	Label     string `json:"label,omitempty"`

	Tests    *TestSnap     `json:"tests,omitempty"`
	Coverage *CoverageSnap `json:"coverage,omitempty"`
}

type TestSnap struct {
	Total   int `json:"total"`
	Passed  int `json:"passed"`
	Failed  int `json:"failed"`
	Skipped int `json:"skipped"`
}