test(sql): Add comprehensive unit tests for breakdown classes and utilities

Introduces new unit tests for Snowflake and SQL Server-specific SQL breakdown classes (DELETE, INSERT, UPDATE, PROCEDURE) and various general SQL utility functions. This significantly increases test coverage, ensuring robustness and correctness across different SQL dialects and helper logic.
2026-06-15 08:16:22 -05:00
parent 9f9450dc6d
commit fbedea3941
13 changed files with 2575 additions and 0 deletions
@@ -0,0 +1,193 @@
+using Strata.SqlTools.Breakdowns.Snowflake;
+
+namespace Strata.SqlTools.SqlBreakdown.Tests.Snowflake;
+
+[TestFixture]
+public class ProcedureBreakdownTests
+{
+    #region Constructor Tests
+
+    [Test]
+    public void Constructor_WithName_SetsProcedureName()
+    {
+        // Arrange & Act
+        var breakdown = new ProcedureBreakdown("MY_PROC");
+
+        Assert.Multiple(() =>
+        {
+            // Assert
+            Assert.That(breakdown.ProcedureName.Clause, Is.EqualTo("MY_PROC"));
+            Assert.That(breakdown.IsUsingParameters, Is.False);
+        });
+    }
+
+    [Test]
+    public void Constructor_WithParameters_SetsParameters()
+    {
+        // Arrange
+        var parameters = new Dictionary<string, string> { ["@ID"] = "1" };
+
+        // Act
+        var breakdown = new ProcedureBreakdown("MY_PROC", parameters);
+
+        Assert.Multiple(() =>
+        {
+            // Assert
+            Assert.That(breakdown.IsUsingParameters, Is.True);
+            Assert.That(breakdown.Parameters["@ID"], Is.EqualTo("1"));
+        });
+    }
+
+    #endregion
+
+    #region GetSql Tests - Snowflake CALL Syntax
+
+    [Test]
+    public void GetSql_WithoutParameters_RendersCallWithEmptyParens()
+    {
+        // Arrange - Snowflake uses CALL proc() rather than EXEC proc
+        var breakdown = new ProcedureBreakdown("MY_PROC");
+
+        // Act
+        var sql = breakdown.GetSql();
+
+        Assert.Multiple(() =>
+        {
+            // Assert
+            Assert.That(sql, Does.Contain("CALL"));
+            Assert.That(sql, Does.Contain("MY_PROC"));
+            Assert.That(sql, Does.Contain("()"));
+            Assert.That(sql, Does.Not.Contain("EXEC"));
+        });
+    }
+
+    [Test]
+    public void GetSql_WithParameters_RendersNamedArrowSyntax()
+    {
+        // Arrange
+        var breakdown = new ProcedureBreakdown("MY_PROC");
+        breakdown.AddParameter("@ID", "1");
+
+        // Act - Snowflake named-parameter syntax strips @ and uses =>
+        var sql = breakdown.GetSql();
+
+        Assert.Multiple(() =>
+        {
+            // Assert
+            Assert.That(sql, Does.Contain("CALL"));
+            Assert.That(sql, Does.Contain("ID => 1"));
+        });
+    }
+
+    #endregion
+
+    #region Parse Tests - Snowflake CALL
+
+    [Test]
+    public void Parse_CallWithoutParameters_PopulatesName()
+    {
+        // Act
+        var breakdown = ProcedureBreakdown.Parse("CALL MY_PROC()");
+
+        Assert.Multiple(() =>
+        {
+            // Assert
+            Assert.That(breakdown.ProcedureName.Clause, Is.EqualTo("MY_PROC"));
+            Assert.That(breakdown.IsUsingParameters, Is.False);
+        });
+    }
+
+    [Test]
+    public void Parse_CallWithNamedParameters_PopulatesParametersWithAtPrefix()
+    {
+        // Arrange
+        var input = "CALL MY_PROC(ID => 1, NAME => 'BOB')";
+
+        // Act
+        var breakdown = ProcedureBreakdown.Parse(input);
+
+        Assert.Multiple(() =>
+        {
+            // Assert - parsed named params are stored with @ prefix for consistency
+            Assert.That(breakdown.ProcedureName.Clause, Is.EqualTo("MY_PROC"));
+            Assert.That(breakdown.Parameters["@ID"], Is.EqualTo("1"));
+            Assert.That(breakdown.Parameters["@NAME"], Is.EqualTo("'BOB'"));
+        });
+    }
+
+    [Test]
+    public void Parse_CallWithPositionalParameters_GeneratesParamNames()
+    {
+        // Arrange - no => present, so values are treated positionally
+        var input = "CALL MY_PROC(1, 'BOB')";
+
+        // Act
+        var breakdown = ProcedureBreakdown.Parse(input);
+
+        Assert.Multiple(() =>
+        {
+            // Assert
+            Assert.That(breakdown.Parameters["@param1"], Is.EqualTo("1"));
+            Assert.That(breakdown.Parameters["@param2"], Is.EqualTo("'BOB'"));
+        });
+    }
+
+    [Test]
+    public void Parse_MicrosoftSqlMode_AcceptsExecSyntax()
+    {
+        // Act - T-SQL EXEC is parsed via base-class delegation
+        var breakdown = ProcedureBreakdown.Parse("EXEC dbo.GetUser @Id = 1", isMicrosoftSql: true);
+
+        Assert.Multiple(() =>
+        {
+            // Assert
+            Assert.That(breakdown, Is.InstanceOf<ProcedureBreakdown>());
+            Assert.That(breakdown.ProcedureName.Clause, Is.EqualTo("dbo.GetUser"));
+            Assert.That(breakdown.Parameters["@Id"], Is.EqualTo("1"));
+        });
+    }
+
+    [Test]
+    public void Parse_NullOrWhitespace_ThrowsArgumentNullException()
+    {
+        // Act & Assert
+        Assert.Throws<ArgumentNullException>(() => ProcedureBreakdown.Parse("  "));
+    }
+
+    [Test]
+    public void Parse_NotACallStatement_ThrowsFormatException()
+    {
+        // Act & Assert
+        Assert.Throws<FormatException>(() => ProcedureBreakdown.Parse("SELECT * FROM USERS"));
+    }
+
+    [Test]
+    public void TryParse_ValidCall_ReturnsTrue()
+    {
+        // Act
+        var success = ProcedureBreakdown.TryParse("CALL MY_PROC()", out var breakdown);
+
+        Assert.Multiple(() =>
+        {
+            // Assert
+            Assert.That(success, Is.True);
+            Assert.That(breakdown.ProcedureName.Clause, Is.EqualTo("MY_PROC"));
+        });
+    }
+
+    [Test]
+    public void TryParse_WrongPrefix_ReturnsFalseWithMessage()
+    {
+        // Act
+        var success = ProcedureBreakdown.TryParse("SELECT 1", out _, out var error);
+
+        Assert.Multiple(() =>
+        {
+            // Assert
+            Assert.That(success, Is.False);
+            Assert.That(error, Does.Contain("CALL"));
+        });
+    }
+
+    #endregion
+}