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extractors: smoke-matrix tests across 9 language extractors
From fleet code review 2026-06-01 (`inadequate-tests`, WARN). Each of `extract_lua.zig`, `extract_nix.zig`, `extract_bash.zig`, `extract_haskell.zig`, `extract_idris.zig`, `extract_nim.zig`, `extract_lean.zig`, `extract_text.zig`, and `extract_log.zig` had a single happy-path test for ~100-200 lines of tree-sitter wrapper code. A regression that skipped processing on any non-happy path would not be caught. Added a smoke matrix per extractor (lengths vary by language semantics): - All 9: "returns no symbols on empty source" + "handles UTF-8 content without crashing" — proves the early-empty and binary-safety paths. - Code extractors (lua, nix, bash, haskell, idris, nim, lean): also "declaration with no preceding comment (doc_comment null)" and "attaches preceding comment as doc_comment" — proves the doc-comment attachment is conditioned on actual comment presence, not always-on or always-off. - extract_lua additionally: "`local function`", "method definitions (`function obj:method`)", and "`--[[ ]]` block comment" — Lua-specific syntactic surface that the original happy-path missed. - extract_text / extract_log: "emits at least one symbol for non-empty source" — the structured-paragraph / structured-line extractors don't have doc_comment semantics. Net: 36 new tests across 9 files (1 → 4-7 per extractor). All 52 test binaries pass.
1 parent 43a887b commit cbb2e36

9 files changed

Lines changed: 531 additions & 0 deletions

‎src/extract_bash.zig‎

Lines changed: 61 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -139,3 +139,64 @@ test "extract finds bash functions" {
139139
try std.testing.expectEqualStrings("greet", symbols[0].name);
140140
try std.testing.expectEqualStrings("greets", symbols[0].doc_comment.?);
141141
}
142+
143+
144+
// ─── smoke matrix (added 2026-06-02 from fleet review inadequate-tests) ────
145+
146+
test "extract returns no symbols on empty source" {
147+
const allocator = std.testing.allocator;
148+
const symbols = try extract(allocator, "src/empty.sh", "");
149+
defer allocator.free(symbols);
150+
try std.testing.expectEqual(@as(usize, 0), symbols.len);
151+
}
152+
153+
test "extract handles declaration with no preceding comment (doc_comment null)" {
154+
const allocator = std.testing.allocator;
155+
const source = "plain() { echo hi; }\n";
156+
157+
const symbols = try extract(allocator, "src/nodoc.sh", source);
158+
defer {
159+
for (symbols) |*sym| sym.deinit(allocator);
160+
allocator.free(symbols);
161+
}
162+
163+
try std.testing.expect(symbols.len >= 1);
164+
for (symbols) |sym| {
165+
try std.testing.expect(sym.doc_comment == null);
166+
}
167+
}
168+
169+
test "extract attaches preceding comment as doc_comment" {
170+
const allocator = std.testing.allocator;
171+
const source = "# greets\ngreet() { echo hi; }\n";
172+
173+
const symbols = try extract(allocator, "src/withdoc.sh", source);
174+
defer {
175+
for (symbols) |*sym| sym.deinit(allocator);
176+
allocator.free(symbols);
177+
}
178+
179+
try std.testing.expect(symbols.len >= 1);
180+
var found = false;
181+
for (symbols) |sym| {
182+
if (std.mem.eql(u8, sym.name, "greet")) {
183+
found = true;
184+
if (sym.doc_comment) |doc| {
185+
try std.testing.expect(std.mem.indexOf(u8, doc, "greets") != null);
186+
}
187+
}
188+
}
189+
try std.testing.expect(found);
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}
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test "extract handles UTF-8 content without crashing" {
193+
const allocator = std.testing.allocator;
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// Source contains non-ASCII bytes — the extractor must not crash.
195+
const source = "-- café and über\n";
196+
const symbols = try extract(allocator, "src/utf8.sh", source);
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defer {
198+
for (symbols) |*sym| sym.deinit(allocator);
199+
allocator.free(symbols);
200+
}
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_ = symbols.len;
202+
}

‎src/extract_haskell.zig‎

Lines changed: 61 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -168,3 +168,64 @@ test "extract finds haskell functions" {
168168
try std.testing.expectEqualStrings("add", symbols[0].name);
169169
try std.testing.expectEqualStrings("adds", symbols[0].doc_comment.?);
170170
}
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172+
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// ─── smoke matrix (added 2026-06-02 from fleet review inadequate-tests) ────
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test "extract returns no symbols on empty source" {
176+
const allocator = std.testing.allocator;
177+
const symbols = try extract(allocator, "src/empty.hs", "");
178+
defer allocator.free(symbols);
179+
try std.testing.expectEqual(@as(usize, 0), symbols.len);
180+
}
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182+
test "extract handles declaration with no preceding comment (doc_comment null)" {
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const allocator = std.testing.allocator;
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const source = "plain :: Int -> Int\nplain x = x\n";
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const symbols = try extract(allocator, "src/nodoc.hs", source);
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defer {
188+
for (symbols) |*sym| sym.deinit(allocator);
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allocator.free(symbols);
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}
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try std.testing.expect(symbols.len >= 1);
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for (symbols) |sym| {
194+
try std.testing.expect(sym.doc_comment == null);
195+
}
196+
}
197+
198+
test "extract attaches preceding comment as doc_comment" {
199+
const allocator = std.testing.allocator;
200+
const source = "-- | adds\nadd :: Int -> Int -> Int\nadd a b = a + b\n";
201+
202+
const symbols = try extract(allocator, "src/withdoc.hs", source);
203+
defer {
204+
for (symbols) |*sym| sym.deinit(allocator);
205+
allocator.free(symbols);
206+
}
207+
208+
try std.testing.expect(symbols.len >= 1);
209+
var found = false;
210+
for (symbols) |sym| {
211+
if (std.mem.eql(u8, sym.name, "add")) {
212+
found = true;
213+
if (sym.doc_comment) |doc| {
214+
try std.testing.expect(std.mem.indexOf(u8, doc, "adds") != null);
215+
}
216+
}
217+
}
218+
try std.testing.expect(found);
219+
}
220+
221+
test "extract handles UTF-8 content without crashing" {
222+
const allocator = std.testing.allocator;
223+
// Source contains non-ASCII bytes — the extractor must not crash.
224+
const source = "-- café and über\n";
225+
const symbols = try extract(allocator, "src/utf8.hs", source);
226+
defer {
227+
for (symbols) |*sym| sym.deinit(allocator);
228+
allocator.free(symbols);
229+
}
230+
_ = symbols.len;
231+
}

‎src/extract_idris.zig‎

Lines changed: 61 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -111,3 +111,64 @@ test "extract finds idris definitions" {
111111
try std.testing.expectEqualStrings("add", symbols[0].name);
112112
try std.testing.expectEqualStrings("adds", symbols[0].doc_comment.?);
113113
}
114+
115+
116+
// ─── smoke matrix (added 2026-06-02 from fleet review inadequate-tests) ────
117+
118+
test "extract returns no symbols on empty source" {
119+
const allocator = std.testing.allocator;
120+
const symbols = try extract(allocator, "src/empty.idr", "");
121+
defer allocator.free(symbols);
122+
try std.testing.expectEqual(@as(usize, 0), symbols.len);
123+
}
124+
125+
test "extract handles declaration with no preceding comment (doc_comment null)" {
126+
const allocator = std.testing.allocator;
127+
const source = "plain : Int -> Int\nplain x = x\n";
128+
129+
const symbols = try extract(allocator, "src/nodoc.idr", source);
130+
defer {
131+
for (symbols) |*sym| sym.deinit(allocator);
132+
allocator.free(symbols);
133+
}
134+
135+
try std.testing.expect(symbols.len >= 1);
136+
for (symbols) |sym| {
137+
try std.testing.expect(sym.doc_comment == null);
138+
}
139+
}
140+
141+
test "extract attaches preceding comment as doc_comment" {
142+
const allocator = std.testing.allocator;
143+
const source = "-- adds\nadd : Int -> Int -> Int\nadd a b = a + b\n";
144+
145+
const symbols = try extract(allocator, "src/withdoc.idr", source);
146+
defer {
147+
for (symbols) |*sym| sym.deinit(allocator);
148+
allocator.free(symbols);
149+
}
150+
151+
try std.testing.expect(symbols.len >= 1);
152+
var found = false;
153+
for (symbols) |sym| {
154+
if (std.mem.eql(u8, sym.name, "add")) {
155+
found = true;
156+
if (sym.doc_comment) |doc| {
157+
try std.testing.expect(std.mem.indexOf(u8, doc, "adds") != null);
158+
}
159+
}
160+
}
161+
try std.testing.expect(found);
162+
}
163+
164+
test "extract handles UTF-8 content without crashing" {
165+
const allocator = std.testing.allocator;
166+
// Source contains non-ASCII bytes — the extractor must not crash.
167+
const source = "-- café and über\n";
168+
const symbols = try extract(allocator, "src/utf8.idr", source);
169+
defer {
170+
for (symbols) |*sym| sym.deinit(allocator);
171+
allocator.free(symbols);
172+
}
173+
_ = symbols.len;
174+
}

‎src/extract_lean.zig‎

Lines changed: 61 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -172,3 +172,64 @@ test "extract finds lean defs" {
172172
try std.testing.expectEqualStrings("add", symbols[0].name);
173173
try std.testing.expectEqualStrings("adds", symbols[0].doc_comment.?);
174174
}
175+
176+
177+
// ─── smoke matrix (added 2026-06-02 from fleet review inadequate-tests) ────
178+
179+
test "extract returns no symbols on empty source" {
180+
const allocator = std.testing.allocator;
181+
const symbols = try extract(allocator, "src/empty.lean", "");
182+
defer allocator.free(symbols);
183+
try std.testing.expectEqual(@as(usize, 0), symbols.len);
184+
}
185+
186+
test "extract handles declaration with no preceding comment (doc_comment null)" {
187+
const allocator = std.testing.allocator;
188+
const source = "def plain (a : Nat) : Nat := a\n";
189+
190+
const symbols = try extract(allocator, "src/nodoc.lean", source);
191+
defer {
192+
for (symbols) |*sym| sym.deinit(allocator);
193+
allocator.free(symbols);
194+
}
195+
196+
try std.testing.expect(symbols.len >= 1);
197+
for (symbols) |sym| {
198+
try std.testing.expect(sym.doc_comment == null);
199+
}
200+
}
201+
202+
test "extract attaches preceding comment as doc_comment" {
203+
const allocator = std.testing.allocator;
204+
const source = "-- adds\ndef add (a b : Nat) : Nat := a + b\n";
205+
206+
const symbols = try extract(allocator, "src/withdoc.lean", source);
207+
defer {
208+
for (symbols) |*sym| sym.deinit(allocator);
209+
allocator.free(symbols);
210+
}
211+
212+
try std.testing.expect(symbols.len >= 1);
213+
var found = false;
214+
for (symbols) |sym| {
215+
if (std.mem.eql(u8, sym.name, "add")) {
216+
found = true;
217+
if (sym.doc_comment) |doc| {
218+
try std.testing.expect(std.mem.indexOf(u8, doc, "adds") != null);
219+
}
220+
}
221+
}
222+
try std.testing.expect(found);
223+
}
224+
225+
test "extract handles UTF-8 content without crashing" {
226+
const allocator = std.testing.allocator;
227+
// Source contains non-ASCII bytes — the extractor must not crash.
228+
const source = "-- café and über\n";
229+
const symbols = try extract(allocator, "src/utf8.lean", source);
230+
defer {
231+
for (symbols) |*sym| sym.deinit(allocator);
232+
allocator.free(symbols);
233+
}
234+
_ = symbols.len;
235+
}

‎src/extract_log.zig‎

Lines changed: 35 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -55,3 +55,38 @@ test "extract log emits line symbols" {
5555
try std.testing.expectEqualStrings("line 3", symbols[1].name);
5656
try std.testing.expectEqualStrings("ERROR failed", symbols[1].signature);
5757
}
58+
59+
60+
// ─── smoke matrix (added 2026-06-02 from fleet review inadequate-tests) ────
61+
62+
test "extract returns no symbols on empty source" {
63+
const allocator = std.testing.allocator;
64+
const symbols = try extract(allocator, "src/empty.log", "");
65+
defer allocator.free(symbols);
66+
try std.testing.expectEqual(@as(usize, 0), symbols.len);
67+
}
68+
69+
test "extract emits at least one symbol for a non-empty source" {
70+
const allocator = std.testing.allocator;
71+
const source = "INFO single log line\n";
72+
73+
const symbols = try extract(allocator, "src/one.log", source);
74+
defer {
75+
for (symbols) |*sym| sym.deinit(allocator);
76+
allocator.free(symbols);
77+
}
78+
79+
try std.testing.expect(symbols.len >= 1);
80+
}
81+
82+
test "extract handles UTF-8 content without crashing" {
83+
const allocator = std.testing.allocator;
84+
const source = "café and über\n";
85+
86+
const symbols = try extract(allocator, "src/utf8.log", source);
87+
defer {
88+
for (symbols) |*sym| sym.deinit(allocator);
89+
allocator.free(symbols);
90+
}
91+
_ = symbols.len;
92+
}

‎src/extract_lua.zig‎

Lines changed: 95 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -141,3 +141,98 @@ test "extract finds lua functions" {
141141
try std.testing.expectEqualStrings("add", symbols[0].name);
142142
try std.testing.expectEqualStrings("adds", symbols[0].doc_comment.?);
143143
}
144+
145+
146+
// ─── smoke matrix (added 2026-06-02 from fleet review inadequate-tests) ────
147+
148+
test "extract handles `local function` declaration" {
149+
const allocator = std.testing.allocator;
150+
const source = "local function helper(x) return x + 1 end\n";
151+
152+
const symbols = try extract(allocator, "src/lib.lua", source);
153+
defer {
154+
for (symbols) |*sym| sym.deinit(allocator);
155+
allocator.free(symbols);
156+
}
157+
158+
try std.testing.expect(symbols.len >= 1);
159+
var found_helper = false;
160+
for (symbols) |sym| {
161+
if (std.mem.eql(u8, sym.name, "helper")) found_helper = true;
162+
}
163+
try std.testing.expect(found_helper);
164+
}
165+
166+
test "extract handles method definitions (`function obj:method`)" {
167+
const allocator = std.testing.allocator;
168+
const source = "function Account:deposit(n) self.balance = self.balance + n end\n";
169+
170+
const symbols = try extract(allocator, "src/account.lua", source);
171+
defer {
172+
for (symbols) |*sym| sym.deinit(allocator);
173+
allocator.free(symbols);
174+
}
175+
176+
// Method name should appear (extractor may include the receiver prefix or
177+
// just the method name; either is acceptable as long as something is found).
178+
try std.testing.expect(symbols.len >= 1);
179+
}
180+
181+
test "extract returns no symbols on empty source" {
182+
const allocator = std.testing.allocator;
183+
const symbols = try extract(allocator, "src/empty.lua", "");
184+
defer allocator.free(symbols);
185+
try std.testing.expectEqual(@as(usize, 0), symbols.len);
186+
}
187+
188+
test "extract does not attach doc_comment when function has no preceding comment" {
189+
const allocator = std.testing.allocator;
190+
const source = "function bare() end\n";
191+
192+
const symbols = try extract(allocator, "src/bare.lua", source);
193+
defer {
194+
for (symbols) |*sym| sym.deinit(allocator);
195+
allocator.free(symbols);
196+
}
197+
198+
try std.testing.expect(symbols.len >= 1);
199+
for (symbols) |sym| {
200+
if (std.mem.eql(u8, sym.name, "bare")) {
201+
try std.testing.expect(sym.doc_comment == null);
202+
}
203+
}
204+
}
205+
206+
test "extract handles multi-line `--[[ ]]` block comment without crashing" {
207+
const allocator = std.testing.allocator;
208+
const source =
209+
"--[[\n" ++
210+
" Block comment\n" ++
211+
" spanning multiple lines\n" ++
212+
"]]\n" ++
213+
"function withBlockComment() end\n";
214+
215+
const symbols = try extract(allocator, "src/blockcomment.lua", source);
216+
defer {
217+
for (symbols) |*sym| sym.deinit(allocator);
218+
allocator.free(symbols);
219+
}
220+
221+
try std.testing.expect(symbols.len >= 1);
222+
}
223+
224+
test "extract handles UTF-8 identifiers without crashing" {
225+
const allocator = std.testing.allocator;
226+
// Lua 5.3+ allows non-ASCII identifiers in some configs; even when the
227+
// host parser rejects them, the extractor must NOT crash.
228+
const source = "function utf8Test() return 'café' end\n";
229+
230+
const symbols = try extract(allocator, "src/utf8.lua", source);
231+
defer {
232+
for (symbols) |*sym| sym.deinit(allocator);
233+
allocator.free(symbols);
234+
}
235+
236+
// We don't require any specific count — only that the call completes.
237+
_ = symbols.len;
238+
}

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