test: cover UpsertTest and run
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package kestrel
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import kestrel.catalog.Catalog
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import kestrel.engine.Executor
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import kestrel.engine.InsertResult
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import kestrel.engine.SelectResult
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import kestrel.engine.StatementResult
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import kestrel.sql.lexer.Lexer
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import kestrel.sql.parser.Parser
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import kestrel.storage.Value
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import kotlin.test.Test
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import kotlin.test.assertEquals
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import kotlin.test.assertFailsWith
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import kotlin.test.assertTrue
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class UpsertTest {
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private val catalog = Catalog()
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private val executor = Executor(catalog)
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private fun run(sql: String): List<StatementResult> =
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Parser(Lexer(sql).tokenize()).parseProgram().map { executor.execute(it) }
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private fun exec(sql: String): StatementResult = run(sql).single()
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private fun select(sql: String): SelectResult = exec(sql) as SelectResult
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private fun insertCount(sql: String): Int = (exec(sql) as InsertResult).count
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private fun seed() {
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run("CREATE TABLE accounts (id INTEGER PRIMARY KEY, name TEXT NOT NULL, balance INTEGER NOT NULL)")
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run("INSERT INTO accounts VALUES (1, 'ada', 100)")
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}
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@Test
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fun noConflictInsertsNormallyAndReportsOneRow() {
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seed()
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val count = insertCount("INSERT INTO accounts VALUES (2, 'linus', 200) ON CONFLICT (id) DO NOTHING")
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assertEquals(1, count)
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assertEquals(2, select("SELECT * FROM accounts").rows.size)
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}
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@Test
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fun conflictOnPrimaryKeyDoesNothingAndReportsZero() {
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seed()
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val count = insertCount("INSERT INTO accounts VALUES (1, 'ignored', 999) ON CONFLICT (id) DO NOTHING")
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assertEquals(0, count)
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assertEquals(Value.IntegerValue(100), select("SELECT balance FROM accounts WHERE id = 1").rows[0][0])
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assertEquals("ada", (select("SELECT name FROM accounts WHERE id = 1").rows[0][0] as Value.TextValue).value)
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}
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@Test
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fun conflictWithBareOnConflictWithNoTargetCatchesAnyUniqueViolation() {
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seed()
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run("CREATE UNIQUE INDEX idxName ON accounts (name)")
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val count = insertCount("INSERT INTO accounts VALUES (2, 'ada', 300) ON CONFLICT DO NOTHING")
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assertEquals(0, count)
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assertEquals(1, select("SELECT * FROM accounts").rows.size)
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}
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@Test
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fun conflictDoUpdateAppliesTheAssignments() {
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seed()
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insertCount("INSERT INTO accounts VALUES (1, 'ada', 999) ON CONFLICT (id) DO UPDATE SET balance = 999")
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assertEquals(Value.IntegerValue(999), select("SELECT balance FROM accounts WHERE id = 1").rows[0][0])
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assertEquals(1, select("SELECT * FROM accounts").rows.size)
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}
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@Test
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fun conflictDoUpdateCanReferenceExcludedForTheProposedRow() {
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seed()
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insertCount("INSERT INTO accounts VALUES (1, 'ada', 50) ON CONFLICT (id) DO UPDATE SET balance = accounts.balance + excluded.balance")
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assertEquals(Value.IntegerValue(150), select("SELECT balance FROM accounts WHERE id = 1").rows[0][0])
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}
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@Test
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fun conflictDoUpdateWithFailingWhereBehavesLikeDoNothingForThatRow() {
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seed()
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val count = insertCount(
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"INSERT INTO accounts VALUES (1, 'ada', 999) ON CONFLICT (id) DO UPDATE SET balance = 999 WHERE excluded.balance < 0"
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)
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assertEquals(0, count)
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assertEquals(Value.IntegerValue(100), select("SELECT balance FROM accounts WHERE id = 1").rows[0][0])
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}
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@Test
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fun conflictDoUpdateWithPassingWhereApplies() {
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seed()
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val count = insertCount(
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"INSERT INTO accounts VALUES (1, 'ada', 999) ON CONFLICT (id) DO UPDATE SET balance = 999 WHERE excluded.balance > 0"
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)
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assertEquals(1, count)
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assertEquals(Value.IntegerValue(999), select("SELECT balance FROM accounts WHERE id = 1").rows[0][0])
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}
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@Test
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fun multiRowInsertHandlesEachRowsConflictIndependently() {
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seed()
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val count = insertCount(
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"""
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INSERT INTO accounts VALUES (1, 'ada', 5), (2, 'linus', 200), (3, 'grace', 300)
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ON CONFLICT (id) DO UPDATE SET balance = accounts.balance + excluded.balance
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""".trimIndent()
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)
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assertEquals(3, count)
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assertEquals(Value.IntegerValue(105), select("SELECT balance FROM accounts WHERE id = 1").rows[0][0])
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assertEquals(Value.IntegerValue(200), select("SELECT balance FROM accounts WHERE id = 2").rows[0][0])
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assertEquals(Value.IntegerValue(300), select("SELECT balance FROM accounts WHERE id = 3").rows[0][0])
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}
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@Test
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fun laterRowInTheSameStatementSeesAnEarlierRowsInsert() {
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run("CREATE TABLE t (id INTEGER PRIMARY KEY, hits INTEGER NOT NULL)")
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val count = insertCount(
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"""
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INSERT INTO t VALUES (1, 1), (1, 1)
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ON CONFLICT (id) DO UPDATE SET hits = t.hits + excluded.hits
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""".trimIndent()
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)
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assertEquals(2, count)
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assertEquals(Value.IntegerValue(2), select("SELECT hits FROM t WHERE id = 1").rows[0][0])
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}
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@Test
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fun conflictTargetMustMatchAnExistingUniqueOrPrimaryKey() {
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seed()
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val error = assertFailsWith<KestrelException> {
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run("INSERT INTO accounts VALUES (2, 'linus', 200) ON CONFLICT (name) DO NOTHING")
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}
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assertTrue(error.message!!.contains("no unique or primary key constraint"), error.message!!)
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}
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@Test
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fun conflictTargetMatchesADeclaredUniqueConstraintNotJustThePrimaryKey() {
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run("CREATE TABLE users (id INTEGER PRIMARY KEY, email TEXT UNIQUE, name TEXT)")
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run("INSERT INTO users VALUES (1, 'ada@example.com', 'ada')")
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val count = insertCount(
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"INSERT INTO users VALUES (2, 'ada@example.com', 'ada2') ON CONFLICT (email) DO UPDATE SET name = excluded.name"
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)
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assertEquals(1, count)
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assertEquals("ada2", (select("SELECT name FROM users WHERE email = 'ada@example.com'").rows[0][0] as Value.TextValue).value)
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assertEquals(1, select("SELECT * FROM users").rows.size)
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}
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@Test
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fun conflictOnADifferentUnrelatedUniqueColumnStillThrows() {
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run("CREATE TABLE users (id INTEGER PRIMARY KEY, email TEXT UNIQUE, tag TEXT UNIQUE)")
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run("INSERT INTO users VALUES (1, 'ada@example.com', 'x')")
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val error = assertFailsWith<KestrelException> {
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run("INSERT INTO users VALUES (2, 'new@example.com', 'x') ON CONFLICT (email) DO NOTHING")
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}
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assertTrue(error.message!!.contains("UNIQUE constraint"), error.message!!)
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}
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@Test
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fun conflictDoUpdateEnforcesNotNullOnTheResultingRow() {
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seed()
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val error = assertFailsWith<KestrelException> {
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run("INSERT INTO accounts VALUES (1, 'ada', 100) ON CONFLICT (id) DO UPDATE SET name = NULL")
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}
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assertTrue(error.message!!.contains("NOT NULL"), error.message!!)
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}
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