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author | Cameron Moore <[email protected]> | 2022-05-25 21:14:37 -0500 |
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committer | Bjørn Erik Pedersen <[email protected]> | 2022-05-26 10:39:29 +0200 |
commit | 6a5acd753abbd899547c89b369de71df639cce19 (patch) | |
tree | 2aca1bc7d9ea86129819db0f248fe83c95f9cd12 | |
parent | 805b21555e283c28a669943a36af6d6d699e9198 (diff) | |
download | hugo-6a5acd753abbd899547c89b369de71df639cce19.tar.gz hugo-6a5acd753abbd899547c89b369de71df639cce19.zip |
metrics: Fix divide by zero error
Under certain conditions, `howSimilarString` could reach a divide-by-
zero situation which causes bogus values to print in the cache potential
column of the template hints output. This situation essentially causes
a `int(math.NaN())` value to be returned and hilarity ensues thereafter.
-rw-r--r-- | metrics/metrics.go | 4 | ||||
-rw-r--r-- | metrics/metrics_test.go | 1 |
2 files changed, 5 insertions, 0 deletions
diff --git a/metrics/metrics.go b/metrics/metrics.go index 9c46fdf7e..c57b1177d 100644 --- a/metrics/metrics.go +++ b/metrics/metrics.go @@ -281,6 +281,10 @@ func howSimilarStrings(a, b string) int { } } + if common == 0 && common == len(af) { + return 100 + } + return int(math.Floor((float64(common) / float64(len(af)) * 100))) } diff --git a/metrics/metrics_test.go b/metrics/metrics_test.go index d8c3237f8..6e799a393 100644 --- a/metrics/metrics_test.go +++ b/metrics/metrics_test.go @@ -43,6 +43,7 @@ func TestSimilarPercentage(t *testing.T) { c.Assert(howSimilar(template.HTML("Hugo Rules"), template.HTML("Hugo Rules")), qt.Equals, 100) c.Assert(howSimilar(map[string]any{"a": 32, "b": 33}, map[string]any{"a": 32, "b": 33}), qt.Equals, 100) c.Assert(howSimilar(map[string]any{"a": 32, "b": 33}, map[string]any{"a": 32, "b": 34}), qt.Equals, 0) + c.Assert(howSimilar("\n", ""), qt.Equals, 100) } type testStruct struct { |