shard-crystal-db/spec/statement_spec.cr

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require "./spec_helper"
describe DB::Statement do
it "should build prepared statements" do
with_dummy_connection do |cnn|
prepared = cnn.prepared("the query")
prepared.should be_a(DB::Statement)
prepared.as(DummyDriver::DummyStatement).prepared?.should be_true
end
end
it "should build unprepared statements" do
with_dummy_connection("prepared_statements=false") do |cnn|
prepared = cnn.unprepared("the query")
prepared.should be_a(DB::Statement)
prepared.as(DummyDriver::DummyStatement).prepared?.should be_false
end
end
describe "prepared_statements flag" do
it "should build prepared statements if true" do
with_dummy_connection("prepared_statements=true") do |cnn|
stmt = cnn.query("the query").statement
stmt.as(DummyDriver::DummyStatement).prepared?.should be_true
end
end
it "should build unprepared statements if false" do
with_dummy_connection("prepared_statements=false") do |cnn|
stmt = cnn.query("the query").statement
stmt.as(DummyDriver::DummyStatement).prepared?.should be_false
end
end
end
it "should initialize positional params in query" do
with_dummy_connection do |cnn|
stmt = cnn.prepared("the query").as(DummyDriver::DummyStatement)
stmt.query "a", 1, nil
stmt.params[0].should eq("a")
stmt.params[1].should eq(1)
stmt.params[2].should eq(nil)
end
end
it "accepts array as single argument" do
with_dummy_connection do |cnn|
stmt = cnn.prepared("the query").as(DummyDriver::DummyStatement)
stmt.query ["a", 1, nil]
stmt.params[0].should eq(["a", 1, nil])
end
end
it "allows no arguments" do
with_dummy_connection do |cnn|
stmt = cnn.prepared("the query").as(DummyDriver::DummyStatement)
stmt.query
stmt.params.should be_empty
end
end
it "concatenate arguments" do
with_dummy_connection do |cnn|
stmt = cnn.prepared("the query").as(DummyDriver::DummyStatement)
stmt.query 1, 2, args: ["a", [1, nil]]
stmt.params[0].should eq(1)
stmt.params[1].should eq(2)
stmt.params[2].should eq("a")
stmt.params[3].should eq([1, nil])
end
end
it "should initialize positional params in query with array" do
with_dummy_connection do |cnn|
stmt = cnn.prepared("the query").as(DummyDriver::DummyStatement)
stmt.query args: ["a", 1, nil]
stmt.params[0].should eq("a")
stmt.params[1].should eq(1)
stmt.params[2].should eq(nil)
end
end
it "should initialize positional params in exec" do
with_dummy_connection do |cnn|
stmt = cnn.prepared("the query").as(DummyDriver::DummyStatement)
stmt.exec "a", 1, nil
stmt.params[0].should eq("a")
stmt.params[1].should eq(1)
stmt.params[2].should eq(nil)
end
end
it "accepts array as single argument" do
with_dummy_connection do |cnn|
stmt = cnn.prepared("the query").as(DummyDriver::DummyStatement)
stmt.exec ["a", 1, nil]
stmt.params[0].should eq(["a", 1, nil])
end
end
it "should initialize positional params in exec with array" do
with_dummy_connection do |cnn|
stmt = cnn.prepared("the query").as(DummyDriver::DummyStatement)
stmt.exec args: ["a", 1, nil]
stmt.params[0].should eq("a")
stmt.params[1].should eq(1)
stmt.params[2].should eq(nil)
end
end
it "allows no arguments" do
with_dummy_connection do |cnn|
stmt = cnn.prepared("the query").as(DummyDriver::DummyStatement)
stmt.exec
stmt.params.should be_empty
end
end
it "concatenate arguments" do
with_dummy_connection do |cnn|
stmt = cnn.prepared("the query").as(DummyDriver::DummyStatement)
stmt.exec 1, 2, args: ["a", [1, nil]]
stmt.params[0].should eq(1)
stmt.params[1].should eq(2)
stmt.params[2].should eq("a")
stmt.params[3].should eq([1, nil])
end
end
it "should initialize positional params in scalar" do
with_dummy_connection do |cnn|
stmt = cnn.prepared("the query").as(DummyDriver::DummyStatement)
stmt.scalar "a", 1, nil
stmt.params[0].should eq("a")
stmt.params[1].should eq(1)
stmt.params[2].should eq(nil)
end
end
it "query with block should not close statement" do
with_dummy_connection do |cnn|
stmt = cnn.prepared "3,4 1,2"
stmt.query
stmt.closed?.should be_false
end
end
it "closing connection should close statement" do
stmt = uninitialized DB::Statement
with_dummy_connection do |cnn|
stmt = cnn.prepared "3,4 1,2"
stmt.query
end
stmt.closed?.should be_true
end
it "query with block should not close statement" do
with_dummy_connection do |cnn|
stmt = cnn.prepared "3,4 1,2"
stmt.query do |rs|
end
stmt.closed?.should be_false
end
end
it "query should not close statement" do
with_dummy_connection do |cnn|
stmt = cnn.prepared "3,4 1,2"
stmt.query do |rs|
end
stmt.closed?.should be_false
end
end
it "scalar should not close statement" do
with_dummy_connection do |cnn|
stmt = cnn.prepared "3,4 1,2"
stmt.scalar
stmt.closed?.should be_false
end
end
it "exec should not close statement" do
with_dummy_connection do |cnn|
stmt = cnn.prepared "3,4 1,2"
stmt.exec
stmt.closed?.should be_false
end
end
it "connection should cache statements by query" do
with_dummy_connection do |cnn|
rs = cnn.prepared.query "1, ?", 2
stmt = rs.statement
rs.close
rs = cnn.prepared.query "1, ?", 4
rs.statement.should be(stmt)
end
end
it "connection should be released if error occurs during exec" do
with_dummy do |db|
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expect_raises DB::Error do
db.exec "raise"
end
DummyDriver::DummyConnection.connections.size.should eq(1)
db.pool.is_available?(DummyDriver::DummyConnection.connections.first)
end
end
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it "raises NoResultsError for scalar" do
with_dummy_connection do |cnn|
stmt = cnn.prepared ""
expect_raises DB::NoResultsError do
stmt.scalar "SELECT LIMIT 0"
end
end
end
end