GRASP.
Grasp · Comprehension Index Scan Report

Who still understands junit-team/junit5?

Computed from git metadata only; no source code contents were read.
touch-weighted · 3-year history window · last commit 60d ago · scores are comparable only against same-mode scans

Grasp Score
60
touch-weighted living knowledge across the repo
Active humans
4 / 88
contributors active in last 90 days vs. all-time
AI-attributed minimum
≥ 0.0%
hard evidence only. Just 34% of commits here carry any attribution signal, so the real share is higher
Inactive share
51.6%
work by authors with no commit in the window; silence, not proof of departure
Composition
53/36/10/1%
source / tests / docs / config share of scored work
Living, source only
60%
the headline recomputed over hand-written source alone
Score stability
volatile
90-day-cliff variant reads 0%–77% across 60/90/180-day activity windows; read the width before the middle value

Dark-code ranking

Modules ranked by comprehension risk: the unknown share, amplified by ongoing change and thin ownership. The green meter is living knowledge.

ModuleRiskLiving knowledgeAI-attr. InactiveBusHeat/180d
platform-testsLOW 43
55%
0%67%140
junit-jupiter-apiLOW 40
55%
0%67%128
junit-vintage-engineLOW 39
50%
0%78%18
junit-jupiter-engineLOW 38
59%
0%60%137
jupiter-testsLOW 37
61%
0%43%136
documentationLOW 36
64%
0%42%1199
junit-platform-suite-apiLOW 36
53%
0%68%12
junit-jupiter-paramsLOW 35
59%
0%54%121
junit-platform-launcherLOW 35
59%
0%54%120
junit-platform-engineLOW 34
58%
0%56%113
junit-platform-commonsLOW 33
59%
0%55%110
junit-jupiter-migrationsupportLOW 33
56%
0%70%10
platform-tooling-support-testsLOW 32
67%
0%34%148
junit-platform-consoleLOW 32
60%
0%53%19
junit-platform-testkitLOW 30
61%
0%51%17
junit-platform-reportingLOW 29
62%
0%48%13
junit-platform-suite-engineLOW 29
63%
0%42%16
.githubLOW 26
74%
0%12%171
junit-platform-suite-commonsLOW 26
65%
0%37%10
junit-platform-jfrLOW 26
66%
0%45%10

One commit touched 57% of every file changed in this window. Wide, shallow commits, a formatter run or a license-header pass, add weight for their author across the whole surface while changing little. Worth looking at what that commit was before crediting the score to its author.

Public-repo caveat: "departed" includes drive-by contributors, overstating attrition relative to a company repo with a real roster. Engagement is a proxy for comprehension. Treat it as a potential indicator rather than a diagnosis.