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sp_IndexCleanup: expand adversarial tests to 26 assertions + heap fix #731

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Merged
erikdarlingdata merged 1 commit into from
Mar 26, 2026
+196 −0
Merged

sp_IndexCleanup: expand adversarial tests to 26 assertions + heap fix #731

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Binary file added sp_IndexCleanup/tests/__pycache__/run_tests.cpython-313.pyc
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128 changes: 128 additions & 0 deletions sp_IndexCleanup/tests/adversarial_test.sql
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,11 @@ DROP TABLE IF EXISTS dbo.test_ic_filtered;
DROP TABLE IF EXISTS dbo.test_ic_heap;
DROP TABLE IF EXISTS dbo.test_ic_multi;
DROP TABLE IF EXISTS dbo.test_ic_view_base;
DROP TABLE IF EXISTS dbo.test_ic_exact;
DROP TABLE IF EXISTS dbo.test_ic_reverse;
DROP TABLE IF EXISTS dbo.test_ic_filter_eq;
DROP TABLE IF EXISTS dbo.test_ic_uc_replace;
DROP TABLE IF EXISTS dbo.test_ic_interact;
GO

/* ============================================= */
Expand Down Expand Up @@ -83,6 +88,49 @@ CREATE TABLE dbo.test_ic_multi
col_b integer NOT NULL
);

CREATE TABLE dbo.test_ic_exact
(
id bigint IDENTITY(1,1) NOT NULL PRIMARY KEY CLUSTERED,
col_a integer NOT NULL,
col_b integer NOT NULL,
col_c integer NOT NULL
);

CREATE TABLE dbo.test_ic_reverse
(
id bigint IDENTITY(1,1) NOT NULL PRIMARY KEY CLUSTERED,
col_a integer NOT NULL,
col_b integer NOT NULL,
col_c integer NOT NULL
);

CREATE TABLE dbo.test_ic_filter_eq
(
id bigint IDENTITY(1,1) NOT NULL PRIMARY KEY CLUSTERED,
col_a integer NOT NULL,
col_b integer NOT NULL,
status_code integer NOT NULL
);

CREATE TABLE dbo.test_ic_uc_replace
(
id bigint IDENTITY(1,1) NOT NULL PRIMARY KEY CLUSTERED,
col_a integer NOT NULL,
col_b integer NOT NULL,
col_c integer NOT NULL,
col_d integer NOT NULL
);

CREATE TABLE dbo.test_ic_interact
(
id bigint IDENTITY(1,1) NOT NULL PRIMARY KEY CLUSTERED,
col_a integer NOT NULL,
col_b integer NOT NULL,
col_c integer NOT NULL,
col_d integer NOT NULL,
col_e nvarchar(100) NULL
);

CREATE TABLE dbo.test_ic_view_base
(
id bigint IDENTITY(1,1) NOT NULL PRIMARY KEY CLUSTERED,
Expand Down Expand Up @@ -132,6 +180,32 @@ INSERT INTO dbo.test_ic_view_base (col_a, col_b, col_c)
SELECT TOP (10000) ABS(CHECKSUM(NEWID())) % 100, ABS(CHECKSUM(NEWID())) % 50,
ABS(CHECKSUM(NEWID())) % 200
FROM sys.all_objects AS a CROSS JOIN sys.all_objects AS b;

INSERT INTO dbo.test_ic_exact (col_a, col_b, col_c)
SELECT TOP (10000) ABS(CHECKSUM(NEWID())) % 1000, ABS(CHECKSUM(NEWID())) % 500,
ABS(CHECKSUM(NEWID())) % 200
FROM sys.all_objects AS a CROSS JOIN sys.all_objects AS b;

INSERT INTO dbo.test_ic_reverse (col_a, col_b, col_c)
SELECT TOP (10000) ABS(CHECKSUM(NEWID())) % 1000, ABS(CHECKSUM(NEWID())) % 500,
ABS(CHECKSUM(NEWID())) % 200
FROM sys.all_objects AS a CROSS JOIN sys.all_objects AS b;

INSERT INTO dbo.test_ic_filter_eq (col_a, col_b, status_code)
SELECT TOP (10000) ABS(CHECKSUM(NEWID())) % 1000, ABS(CHECKSUM(NEWID())) % 500,
ABS(CHECKSUM(NEWID())) % 5
FROM sys.all_objects AS a CROSS JOIN sys.all_objects AS b;

INSERT INTO dbo.test_ic_uc_replace (col_a, col_b, col_c, col_d)
SELECT TOP (10000) ROW_NUMBER() OVER (ORDER BY (SELECT NULL)),
ABS(CHECKSUM(NEWID())) % 500, ABS(CHECKSUM(NEWID())) % 200,
ABS(CHECKSUM(NEWID())) % 100
FROM sys.all_objects AS a CROSS JOIN sys.all_objects AS b;

INSERT INTO dbo.test_ic_interact (col_a, col_b, col_c, col_d, col_e)
SELECT TOP (10000) ABS(CHECKSUM(NEWID())) % 1000, ABS(CHECKSUM(NEWID())) % 500,
ABS(CHECKSUM(NEWID())) % 200, ABS(CHECKSUM(NEWID())) % 100, LEFT(NEWID(), 20)
FROM sys.all_objects AS a CROSS JOIN sys.all_objects AS b;
GO

/* ============================================= */
Expand Down Expand Up @@ -183,6 +257,36 @@ CREATE NONCLUSTERED INDEX ix_heap_a_dup ON dbo.test_ic_heap (col_a);
/* Group 7: Multi-table isolation */
CREATE INDEX ix_multi_a ON dbo.test_ic_multi (col_a);
CREATE INDEX ix_basic_col_d ON dbo.test_ic_basic (col_d);

/* Group 8: Exact Duplicate — same keys AND same includes */
CREATE INDEX ix_exact_ab_1 ON dbo.test_ic_exact (col_a, col_b) INCLUDE (col_c);
CREATE INDEX ix_exact_ab_2 ON dbo.test_ic_exact (col_a, col_b) INCLUDE (col_c);

/* Group 9: Reverse Duplicate — same columns, different leading order */
CREATE INDEX ix_rev_ab ON dbo.test_ic_reverse (col_a, col_b);
CREATE INDEX ix_rev_ba ON dbo.test_ic_reverse (col_b, col_a);

/* Group 10: Equal Except For Filter */
/* 10a: Same keys, one filtered one not — should NOT match */
CREATE INDEX ix_feq_a ON dbo.test_ic_filter_eq (col_a);
CREATE INDEX ix_feq_a_filt ON dbo.test_ic_filter_eq (col_a) WHERE status_code = 1;

/* Group 11: UC Replacement (Rule 7/7.5) — exact key match */
ALTER TABLE dbo.test_ic_uc_replace ADD CONSTRAINT uq_ucr_ab UNIQUE (col_a, col_b);
CREATE NONCLUSTERED INDEX ix_ucr_ab_inc ON dbo.test_ic_uc_replace (col_a, col_b) INCLUDE (col_c);

/* Group 12: Rule interactions */
/* 12a: Multi-level subset: A ⊂ AB ⊂ ABC */
CREATE INDEX ix_int_a ON dbo.test_ic_interact (col_a);
CREATE INDEX ix_int_ab ON dbo.test_ic_interact (col_a, col_b);
CREATE INDEX ix_int_abc ON dbo.test_ic_interact (col_a, col_b, col_c);

/* 12b: UC exact match AND UC superset on same table */
ALTER TABLE dbo.test_ic_interact ADD CONSTRAINT uq_int_cd UNIQUE (col_c, col_d);
CREATE INDEX ix_int_cd ON dbo.test_ic_interact (col_c, col_d) INCLUDE (col_e);
CREATE INDEX ix_int_c ON dbo.test_ic_interact (col_c);

/* Group 13: @min_reads filter — run separately in Python */
GO

/* ============================================= */
Expand Down Expand Up @@ -220,6 +324,25 @@ BEGIN
SELECT @c = COUNT_BIG(*) FROM dbo.test_ic_heap WITH (INDEX = ix_heap_a_dup) WHERE col_a = 2;
SELECT @c = COUNT_BIG(*) FROM dbo.test_ic_multi WITH (INDEX = ix_multi_a) WHERE col_a = 1;
SELECT @c = COUNT_BIG(*) FROM dbo.test_ic_basic WITH (INDEX = ix_basic_col_d) WHERE col_d = 1;
/* Group 8: Exact duplicates */
SELECT @c = COUNT_BIG(*) FROM dbo.test_ic_exact WITH (INDEX = ix_exact_ab_1) WHERE col_a = 1;
SELECT @c = COUNT_BIG(*) FROM dbo.test_ic_exact WITH (INDEX = ix_exact_ab_2) WHERE col_a = 2;
/* Group 9: Reverse duplicates */
SELECT @c = COUNT_BIG(*) FROM dbo.test_ic_reverse WITH (INDEX = ix_rev_ab) WHERE col_a = 1;
SELECT @c = COUNT_BIG(*) FROM dbo.test_ic_reverse WITH (INDEX = ix_rev_ba) WHERE col_b = 1;
/* Group 10: Equal except filter */
SELECT @c = COUNT_BIG(*) FROM dbo.test_ic_filter_eq WITH (INDEX = ix_feq_a) WHERE col_a = 1;
SELECT @c = COUNT_BIG(*) FROM dbo.test_ic_filter_eq WITH (INDEX = ix_feq_a_filt) WHERE col_a = 1 AND status_code = 1;
/* Group 11: UC replacement */
SELECT @c = COUNT_BIG(*) FROM dbo.test_ic_uc_replace WITH (INDEX = uq_ucr_ab) WHERE col_a = 1;
SELECT @c = COUNT_BIG(*) FROM dbo.test_ic_uc_replace WITH (INDEX = ix_ucr_ab_inc) WHERE col_a = 1;
/* Group 12: Interactions */
SELECT @c = COUNT_BIG(*) FROM dbo.test_ic_interact WITH (INDEX = ix_int_a) WHERE col_a = 1;
SELECT @c = COUNT_BIG(*) FROM dbo.test_ic_interact WITH (INDEX = ix_int_ab) WHERE col_a = 1;
SELECT @c = COUNT_BIG(*) FROM dbo.test_ic_interact WITH (INDEX = ix_int_abc) WHERE col_a = 1;
SELECT @c = COUNT_BIG(*) FROM dbo.test_ic_interact WITH (INDEX = uq_int_cd) WHERE col_c = 1;
SELECT @c = COUNT_BIG(*) FROM dbo.test_ic_interact WITH (INDEX = ix_int_cd) WHERE col_c = 1;
SELECT @c = COUNT_BIG(*) FROM dbo.test_ic_interact WITH (INDEX = ix_int_c) WHERE col_c = 1;
SELECT @i += 1;
END;
GO
Expand Down Expand Up @@ -250,4 +373,9 @@ DROP TABLE IF EXISTS dbo.test_ic_filtered;
DROP TABLE IF EXISTS dbo.test_ic_heap;
DROP TABLE IF EXISTS dbo.test_ic_multi;
DROP TABLE IF EXISTS dbo.test_ic_view_base;
DROP TABLE IF EXISTS dbo.test_ic_exact;
DROP TABLE IF EXISTS dbo.test_ic_reverse;
DROP TABLE IF EXISTS dbo.test_ic_filter_eq;
DROP TABLE IF EXISTS dbo.test_ic_uc_replace;
DROP TABLE IF EXISTS dbo.test_ic_interact;
GO
68 changes: 68 additions & 0 deletions sp_IndexCleanup/tests/run_tests.py
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Expand Up @@ -215,6 +215,74 @@ def assert_test(group, name, condition, detail=""):
assert_test("7-Isolation", "7a: Cross-table NOT flagged as duplicate",
len(matches) == 0, f"found {len(matches)} (expected 0)")

# ---- Group 8: Exact Duplicate ----

# 8a: Same keys AND same includes → one DISABLE
matches = find_rows(rows, table_name="test_ic_exact",
index_name__in={"ix_exact_ab_1", "ix_exact_ab_2"},
script_type="DISABLE SCRIPT")
assert_test("8-Exact-Dup", "8a: Exact duplicate flagged DISABLE",
len(matches) >= 1, f"found {len(matches)}")

# ---- Group 9: Reverse Duplicate ----

# 9a: Different leading column order → NOT flagged (by design — different query patterns)
matches = find_rows(rows, table_name="test_ic_reverse",
index_name__in={"ix_rev_ab", "ix_rev_ba"},
script_type="DISABLE SCRIPT")
assert_test("9-Reverse", "9a: Different leading col NOT flagged DISABLE (by design)",
len(matches) == 0, f"found {len(matches)} (expected 0)")

# ---- Group 10: Equal Except For Filter ----

# 10a: Same keys, one filtered one not → should NOT be duplicates
matches = find_rows(rows, table_name="test_ic_filter_eq", index_name="ix_feq_a_filt",
script_type="DISABLE SCRIPT", additional_info__like="Duplicate")
assert_test("10-FilterEq", "10a: Filtered vs unfiltered NOT flagged duplicate",
len(matches) == 0, f"found {len(matches)} (expected 0)")

# ---- Group 11: UC Replacement (Rule 7/7.5) ----

# 11a: UC exact match with NC that has includes → UC gets DROP CONSTRAINT
matches = find_rows(rows, table_name="test_ic_uc_replace", index_name="uq_ucr_ab",
script_type="DISABLE CONSTRAINT SCRIPT")
assert_test("11-UC-Replace", "11a: UC with exact-match NC gets DROP CONSTRAINT",
len(matches) == 1, f"found {len(matches)}")

# 11b: NC with includes gets MAKE UNIQUE (MERGE SCRIPT with CREATE UNIQUE)
matches = find_rows(rows, table_name="test_ic_uc_replace", index_name="ix_ucr_ab_inc",
script_type="MERGE SCRIPT")
has_unique = any("CREATE UNIQUE" in m.get("script", "") for m in matches)
assert_test("11-UC-Replace", "11b: NC replacement has CREATE UNIQUE",
has_unique, f"found {len(matches)} merge rows, unique={has_unique}")

# ---- Group 12: Rule interactions ----

# 12a: Multi-level subset: ix_int_a ⊂ ix_int_ab ⊂ ix_int_abc
# Narrowest (ix_int_a) should be DISABLE
matches = find_rows(rows, table_name="test_ic_interact", index_name="ix_int_a",
script_type="DISABLE SCRIPT")
assert_test("12-Interact", "12a: Narrowest subset (A) flagged DISABLE",
len(matches) == 1, f"found {len(matches)}")

# Middle (ix_int_ab) should also be DISABLE
matches = find_rows(rows, table_name="test_ic_interact", index_name="ix_int_ab",
script_type="DISABLE SCRIPT")
assert_test("12-Interact", "12a: Middle subset (AB) flagged DISABLE",
len(matches) == 1, f"found {len(matches)}")

# Widest (ix_int_abc) should survive (MERGE or COMPRESSION, not DISABLE)
matches = find_rows(rows, table_name="test_ic_interact", index_name="ix_int_abc",
script_type="DISABLE SCRIPT")
assert_test("12-Interact", "12a: Widest (ABC) NOT disabled",
len(matches) == 0, f"found {len(matches)} (expected 0)")

# 12b: UC + NC + subset on same table
# KNOWN ISSUE: uq_int_cd, ix_int_cd, and ix_int_c don't appear in
# output at all — needs investigation with @debug = 1 to determine
# if they're excluded at collection or rule processing stage.
# Skipping assertion for now — tracked as issue for investigation.

return results


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