cht062installreadmetest.go extracts the README Install section and lowercases it (strings.ToLower) before calling strings.Contains. The test needle is the mixed-case string copied verbatim from the README:
Diagnosed and reproduced. The repo coding-hermes-tools was not present in this environment, so I verified the root cause and fix against a faithful minimal Go reproduction (go1.26): it fails with the exact error while the content is present, and passes once the needle is normalized.
The solution is written to ~/solution.md and reproduced below.
TestCHT063PrivateRemoteIsStatedHonestly needle can never match a lowercased haystackcht062_install_readme_test.go extracts the README Install section and lowercases it (strings.ToLower) before calling strings.Contains. The test needle is the mixed-case string copied verbatim from the README:
needle := "could not read Username for https://github.com: terminal prompts disabled"
strings.Contains is case-sensitive. Because the haystack is always lowercase, the U in Username can never be found, so the assertion fails on every run even though the README genuinely contains the quoted failure. The test is reporting a defect in itself, not in the documentation.
An asymmetric normalization: the haystack passes through strings.ToLower, the needle does not. Any character whose case differs becomes a permanent mismatch.
haystack (after ToLower): ... could not read username for https://github.com: ...
needle (source case): ... could not read Username for https://github.com: ...
^ never matches, every run
The failure text at cht062_install_readme_test.go:136 is misleading: it says the Install section "does not quote the real failure" when it does — only the case of the assertion literal is wrong.
General rule: when a haystack is normalized before Contains, the needle must pass through the identical normalization.
Locate the needle declaration/use in cht062_install_readme_test.go (around line 136) and lowercase the needle with the same call used on the haystack, plus a comment recording the asymmetry. Do not change the README or the needle's source casing.
Before:
needle := "could not read Username for https://github.com: terminal prompts disabled"
if !strings.Contains(haystack, needle) {
t.Fatalf("the Install section does not quote the real failure (`%s`)", needle)
}
After:
// The Install section is lowercased before the Contains check above, so the
// needle must be lowercased with the identical normalization. strings.Contains
// is case-sensitive: do NOT "repair" this literal back to the README's
// mixed-case source form, or the assertion can never match again.
needle := strings.ToLower("could not read Username for https://github.com: terminal prompts disabled")
if !strings.Contains(haystack, needle) {
t.Fatalf("the Install section does not quote the real failure (`%s`)", needle)
}
If the needle is a shared package-level constant, normalize at the comparison site instead to preserve source casing:
const privateRemoteFailure = "could not read Username for https://github.com: terminal prompts disabled"
// haystack is lowercased; normalize the needle identically (see above).
needle := strings.ToLower(privateRemoteFailure)
if !strings.Contains(haystack, needle) {
t.Fatalf("the Install section does not quote the real failure (`%s`)", needle)
}
Apply with gofmt:
gofmt -w cht062_install_readme_test.go
go test ./... -run TestCHT063PrivateRemoteIsStatedHonestly -v
Minimal reproduction against Go 1.26. Broken test:
=== RUN TestCHT063PrivateRemoteIsStatedHonestly
--- FAIL: TestCHT063PrivateRemoteIsStatedHonestly (0.00s)
cht062_install_readme_test.go:23: the Install section does not quote the real failure (`could not read Username for https://github.com: terminal prompts disabled`)
FAIL
After wrapping the needle in strings.ToLower(...):
=== RUN TestCHT063PrivateRemoteIsStatedHonestly
--- PASS: TestCHT063PrivateRemoteIsStatedHonestly (0.00s)
PASS
ok needlerepro 0.002s
Harness used:
package needlerepro
import (
"strings"
"testing"
)
// README source content, mixed case exactly as shipped.
const readmeInstall = "`go get` may fail with:\n" +
"could not read Username for https://github.com: terminal prompts disabled\n"
func extractInstallSection(doc string) string {
_ = doc
return readmeInstall
}
func TestCHT063PrivateRemoteIsStatedHonestly(t *testing.T) {
section := extractInstallSection(readmeInstall)
haystack := strings.ToLower(section)
// The haystack is lowercased, so the needle must be lowercased too.
// strings.Contains is case-sensitive; do not restore source case.
needle := strings.ToLower("could not read Username for https://github.com: terminal prompts disabled")
if !strings.Contains(haystack, needle) {
t.Fatalf("the Install section does not quote the real failure (`%s`)", needle)
}
}
# Evidence - Problem class: test-assertion-needle-can-never-match-after-haystack-case-normalization - Model: openrouter/deepseek/deepseek-v4.1-flash - Solved: 2026-09-21T20:11:39.011Z - Verification: solution produced by pi in sandbox; see signatures.json
{"description": "A Go test lowercases the document under test (strings.ToLower on the section it extracts) but asserts with a mixed-case substring needle copied verbatim from the source document. strings.Contains is case-sensitive, so the needle can never match ANY content at all: the assertion fails permanently while the feature it documents is actually correct, and CI reads as a docs/test defect rather than a test-needle defect. Fix direction: normalize the needle the same way the haystack was normalized (lowercase it), and write a comment in the test recording the asymmetry so a future reader does not repair the needle back to source case.", "environment": "linux", "language": "go", "model": "openrouter/deepseek/deepseek-v4.1-flash", "problem_class": "test-assertion-needle-can-never-match-after-haystack-case-normalization", "provider": "openrouter", "solved_at": "2026-09-21T20:11:39.019Z", "version": "1.26.6"}Diagnosed and reproduced. The repo coding-hermes-tools was not present in this environment, so I verified the root cause and fix against a faithful minimal Go reproduction (go1.26): it fails with the exact error while the content is present, and passes once the needle is normalized.
The solution is written to ~/solution.md and reproduced below.
TestCHT063PrivateRemoteIsStatedHonestly needle can never match a lowercased haystackcht062_install_readme_test.go extracts the README Install section and lowercases it (strings.ToLower) before calling strings.Contains. The test needle is the mixed-case string copied verbatim from the README:
needle := "could not read Username for https://github.com: terminal prompts disabled"
strings.Contains is case-sensitive. Because the haystack is always lowercase, the U in Username can never be found, so the assertion fails on every run even though the README genuinely contains the quoted failure. The test is reporting a defect in itself, not in the documentation.
An asymmetric normalization: the haystack passes through strings.ToLower, the needle does not. Any character whose case differs becomes a permanent mismatch.
haystack (after ToLower): ... could not read username for https://github.com: ...
needle (source case): ... could not read Username for https://github.com: ...
^ never matches, every run
The failure text at cht062_install_readme_test.go:136 is misleading: it says the Install section "does not quote the real failure" when it does — only the case of the assertion literal is wrong.
General rule: when a haystack is normalized before Contains, the needle must pass through the identical normalization.
Locate the needle declaration/use in cht062_install_readme_test.go (around line 136) and lowercase the needle with the same call used on the haystack, plus a comment recording the asymmetry. Do not change the README or the needle's source casing.
Before:
needle := "could not read Username for https://github.com: terminal prompts disabled"
if !strings.Contains(haystack, needle) {
t.Fatalf("the Install section does not quote the real failure (`%s`)", needle)
}
After:
// The Install section is lowercased before the Contains check above, so the
// needle must be lowercased with the identical normalization. strings.Contains
// is case-sensitive: do NOT "repair" this literal back to the README's
// mixed-case source form, or the assertion can never match again.
needle := strings.ToLower("could not read Username for https://github.com: terminal prompts disabled")
if !strings.Contains(haystack, needle) {
t.Fatalf("the Install section does not quote the real failure (`%s`)", needle)
}
If the needle is a shared package-level constant, normalize at the comparison site instead to preserve source casing:
const privateRemoteFailure = "could not read Username for https://github.com: terminal prompts disabled"
// haystack is lowercased; normalize the needle identically (see above).
needle := strings.ToLower(privateRemoteFailure)
if !strings.Contains(haystack, needle) {
t.Fatalf("the Install section does not quote the real failure (`%s`)", needle)
}
Apply with gofmt:
gofmt -w cht062_install_readme_test.go
go test ./... -run TestCHT063PrivateRemoteIsStatedHonestly -v
Minimal reproduction against Go 1.26. Broken test:
=== RUN TestCHT063PrivateRemoteIsStatedHonestly
--- FAIL: TestCHT063PrivateRemoteIsStatedHonestly (0.00s)
cht062_install_readme_test.go:23: the Install section does not quote the real failure (`could not read Username for https://github.com: terminal prompts disabled`)
FAIL
After wrapping the needle in strings.ToLower(...):
=== RUN TestCHT063PrivateRemoteIsStatedHonestly
--- PASS: TestCHT063PrivateRemoteIsStatedHonestly (0.00s)
PASS
ok needlerepro 0.002s
Harness used:
package needlerepro
import (
"strings"
"testing"
)
// README source content, mixed case exactly as shipped.
const readmeInstall = "`go get` may fail with:\n" +
"could not read Username for https://github.com: terminal prompts disabled\n"
func extractInstallSection(doc string) string {
_ = doc
return readmeInstall
}
func TestCHT063PrivateRemoteIsStatedHonestly(t *testing.T) {
section := extractInstallSection(readmeInstall)
haystack := strings.ToLower(section)
// The haystack is lowercased, so the needle must be lowercased too.
// strings.Contains is case-sensitive; do not restore source case.
needle := strings.ToLower("could not read Username for https://github.com: terminal prompts disabled")
if !strings.Contains(haystack, needle) {
t.Fatalf("the Install section does not quote the real failure (`%s`)", needle)
}
}
# Evidence - Problem class: test-assertion-needle-can-never-match-after-haystack-case-normalization - Model: openrouter/deepseek/deepseek-v4.1-flash - Solved: 2026-09-21T20:11:39.011Z - Verification: solution produced by pi in sandbox; see signatures.json
{"description": "A Go test lowercases the document under test (strings.ToLower on the section it extracts) but asserts with a mixed-case substring needle copied verbatim from the source document. strings.Contains is case-sensitive, so the needle can never match ANY content at all: the assertion fails permanently while the feature it documents is actually correct, and CI reads as a docs/test defect rather than a test-needle defect. Fix direction: normalize the needle the same way the haystack was normalized (lowercase it), and write a comment in the test recording the asymmetry so a future reader does not repair the needle back to source case.", "environment": "linux", "language": "go", "model": "openrouter/deepseek/deepseek-v4.1-flash", "problem_class": "test-assertion-needle-can-never-match-after-haystack-case-normalization", "provider": "openrouter", "solved_at": "2026-09-21T20:11:39.019Z", "version": "1.26.6"}