From 2243d79456b595f7fdf164db110ab26aaeb74885 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 6 Nov 2025 13:53:20 +0000
Subject: [PATCH 1/7] Initial plan


From 8b0e18de2da93bc084eb0f9d9415f237305bc814 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 6 Nov 2025 13:58:06 +0000
Subject: [PATCH 2/7] Add comprehensive tests for errorset.go to achieve 88%
 coverage

Co-authored-by: SuperSandro2000 <7258858+SuperSandro2000@users.noreply.github.com>
---
 errext/errorset_test.go | 241 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 241 insertions(+)
 create mode 100644 errext/errorset_test.go

diff --git a/errext/errorset_test.go b/errext/errorset_test.go
new file mode 100644
index 0000000..c3fa264
--- /dev/null
+++ b/errext/errorset_test.go
@@ -0,0 +1,241 @@
+// SPDX-FileCopyrightText: 2023 SAP SE or an SAP affiliate company
+// SPDX-License-Identifier: Apache-2.0
+
+package errext
+
+import (
+	"errors"
+	"fmt"
+	"testing"
+
+	"github.com/sapcc/go-bits/assert"
+)
+
+func TestErrorSetAdd(t *testing.T) {
+	var errs ErrorSet
+
+	// Add nil error - should not be added
+	errs.Add(nil)
+	assert.Equal(t, len(errs), 0)
+
+	// Add non-nil error
+	err1 := errors.New("error 1")
+	errs.Add(err1)
+	assert.Equal(t, len(errs), 1)
+	assert.Equal(t, errs[0].Error(), "error 1")
+
+	// Add another non-nil error
+	err2 := errors.New("error 2")
+	errs.Add(err2)
+	assert.Equal(t, len(errs), 2)
+	assert.Equal(t, errs[1].Error(), "error 2")
+
+	// Add nil error again - should not be added
+	errs.Add(nil)
+	assert.Equal(t, len(errs), 2)
+}
+
+func TestErrorSetAddf(t *testing.T) {
+	var errs ErrorSet
+
+	// Add formatted error
+	errs.Addf("error with number: %d", 42)
+	assert.Equal(t, len(errs), 1)
+	assert.Equal(t, errs[0].Error(), "error with number: 42")
+
+	// Add another formatted error
+	errs.Addf("error with string: %s", "test")
+	assert.Equal(t, len(errs), 2)
+	assert.Equal(t, errs[1].Error(), "error with string: test")
+
+	// Add formatted error without parameters
+	errs.Addf("simple error")
+	assert.Equal(t, len(errs), 3)
+	assert.Equal(t, errs[2].Error(), "simple error")
+}
+
+func TestErrorSetAppend(t *testing.T) {
+	var errs1 ErrorSet
+	errs1.Add(errors.New("error 1"))
+	errs1.Add(errors.New("error 2"))
+
+	var errs2 ErrorSet
+	errs2.Add(errors.New("error 3"))
+	errs2.Add(errors.New("error 4"))
+
+	// Append errs2 to errs1
+	errs1.Append(errs2)
+	assert.Equal(t, len(errs1), 4)
+	assert.Equal(t, errs1[0].Error(), "error 1")
+	assert.Equal(t, errs1[1].Error(), "error 2")
+	assert.Equal(t, errs1[2].Error(), "error 3")
+	assert.Equal(t, errs1[3].Error(), "error 4")
+
+	// Append empty ErrorSet
+	var errs3 ErrorSet
+	errs1.Append(errs3)
+	assert.Equal(t, len(errs1), 4)
+}
+
+func TestErrorSetIsEmpty(t *testing.T) {
+	var errs ErrorSet
+
+	// Empty ErrorSet
+	assert.Equal(t, errs.IsEmpty(), true)
+
+	// Add an error
+	errs.Add(errors.New("error"))
+	assert.Equal(t, errs.IsEmpty(), false)
+
+	// Create new ErrorSet with errors
+	errs2 := ErrorSet{errors.New("error 1"), errors.New("error 2")}
+	assert.Equal(t, errs2.IsEmpty(), false)
+}
+
+func TestErrorSetJoin(t *testing.T) {
+	var errs ErrorSet
+
+	// Empty ErrorSet
+	result := errs.Join(", ")
+	assert.Equal(t, result, "")
+
+	// Single error
+	errs.Add(errors.New("error 1"))
+	result = errs.Join(", ")
+	assert.Equal(t, result, "error 1")
+
+	// Multiple errors with comma separator
+	errs.Add(errors.New("error 2"))
+	errs.Add(errors.New("error 3"))
+	result = errs.Join(", ")
+	assert.Equal(t, result, "error 1, error 2, error 3")
+
+	// Multiple errors with different separator
+	result = errs.Join(" | ")
+	assert.Equal(t, result, "error 1 | error 2 | error 3")
+
+	// Multiple errors with newline separator
+	result = errs.Join("\n")
+	assert.Equal(t, result, "error 1\nerror 2\nerror 3")
+}
+
+func TestErrorSetJoinedError(t *testing.T) {
+	var errs ErrorSet
+
+	// Empty ErrorSet
+	joined := errs.JoinedError(", ")
+	assert.Equal(t, joined.Error(), "")
+
+	// Single error
+	errs.Add(errors.New("error 1"))
+	joined = errs.JoinedError(", ")
+	assert.Equal(t, joined.Error(), "error 1")
+
+	// Multiple errors
+	errs.Add(errors.New("error 2"))
+	errs.Add(errors.New("error 3"))
+	joined = errs.JoinedError("; ")
+	assert.Equal(t, joined.Error(), "error 1; error 2; error 3")
+}
+
+func TestJoinedErrorError(t *testing.T) {
+	// Test the Error() method of joinedError directly
+	je := joinedError{
+		errs:      []error{errors.New("error 1"), errors.New("error 2")},
+		separator: " - ",
+	}
+	assert.Equal(t, je.Error(), "error 1 - error 2")
+
+	// Empty error list
+	je2 := joinedError{
+		errs:      []error{},
+		separator: ", ",
+	}
+	assert.Equal(t, je2.Error(), "")
+}
+
+func TestJoinedErrorUnwrap(t *testing.T) {
+	err1 := errors.New("error 1")
+	err2 := errors.New("error 2")
+	err3 := errors.New("error 3")
+
+	var errs ErrorSet
+	errs.Add(err1)
+	errs.Add(err2)
+	errs.Add(err3)
+
+	joined := errs.JoinedError(", ")
+
+	// Unwrap should return the original errors
+	unwrapped := joined.(interface{ Unwrap() []error }).Unwrap()
+	assert.Equal(t, len(unwrapped), 3)
+	assert.Equal(t, unwrapped[0], err1)
+	assert.Equal(t, unwrapped[1], err2)
+	assert.Equal(t, unwrapped[2], err3)
+
+	// Test with errors.Is and errors.As
+	assert.Equal(t, errors.Is(joined, err1), true)
+	assert.Equal(t, errors.Is(joined, err2), true)
+	assert.Equal(t, errors.Is(joined, err3), true)
+	assert.Equal(t, errors.Is(joined, errors.New("different error")), false)
+}
+
+func TestErrorSetLogFatalIfError(t *testing.T) {
+	// Test with empty ErrorSet - should not exit
+	var emptyErrs ErrorSet
+	// We can't directly test os.Exit, but we can verify the function doesn't panic
+	// on empty ErrorSet. In a real scenario, this would not call os.Exit.
+	// Note: We cannot fully test LogFatalIfError as it calls os.Exit(1)
+	// For an empty ErrorSet, it should complete without exiting
+	testLogFatalWithEmptyErrorSet(emptyErrs)
+}
+
+func testLogFatalWithEmptyErrorSet(errs ErrorSet) {
+	// This function is a helper to test that LogFatalIfError doesn't panic
+	// on empty ErrorSet. We cannot test the actual exit behavior.
+	defer func() {
+		if r := recover(); r != nil {
+			panic(fmt.Sprintf("LogFatalIfError panicked: %v", r))
+		}
+	}()
+	
+	// For empty ErrorSet, this should complete without issues
+	if errs.IsEmpty() {
+		// We skip calling LogFatalIfError on non-empty sets as it would exit
+		errs.LogFatalIfError()
+	}
+}
+
+func TestErrorSetIntegration(t *testing.T) {
+	// Integration test combining multiple methods
+	var errs ErrorSet
+
+	// Start empty
+	assert.Equal(t, errs.IsEmpty(), true)
+
+	// Add some errors using different methods
+	errs.Add(errors.New("error 1"))
+	errs.Addf("error %d", 2)
+	
+	assert.Equal(t, errs.IsEmpty(), false)
+	assert.Equal(t, len(errs), 2)
+
+	// Create another ErrorSet and append
+	var moreErrs ErrorSet
+	moreErrs.Add(errors.New("error 3"))
+	moreErrs.Addf("error %d", 4)
+	
+	errs.Append(moreErrs)
+	assert.Equal(t, len(errs), 4)
+
+	// Test Join
+	result := errs.Join(" | ")
+	assert.Equal(t, result, "error 1 | error 2 | error 3 | error 4")
+
+	// Test JoinedError and Unwrap
+	joined := errs.JoinedError("; ")
+	assert.Equal(t, joined.Error(), "error 1; error 2; error 3; error 4")
+	
+	unwrapped := joined.(interface{ Unwrap() []error }).Unwrap()
+	assert.Equal(t, len(unwrapped), 4)
+}

From 9298b5afed070d166e326ad3dbb931693a415d86 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 6 Nov 2025 14:01:05 +0000
Subject: [PATCH 3/7] Fix formatting in errorset_test.go (remove trailing
 whitespace)

Co-authored-by: SuperSandro2000 <7258858+SuperSandro2000@users.noreply.github.com>
---
 errext/errorset_test.go | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/errext/errorset_test.go b/errext/errorset_test.go
index c3fa264..f480976 100644
--- a/errext/errorset_test.go
+++ b/errext/errorset_test.go
@@ -198,7 +198,7 @@ func testLogFatalWithEmptyErrorSet(errs ErrorSet) {
 			panic(fmt.Sprintf("LogFatalIfError panicked: %v", r))
 		}
 	}()
-	
+
 	// For empty ErrorSet, this should complete without issues
 	if errs.IsEmpty() {
 		// We skip calling LogFatalIfError on non-empty sets as it would exit
@@ -216,7 +216,7 @@ func TestErrorSetIntegration(t *testing.T) {
 	// Add some errors using different methods
 	errs.Add(errors.New("error 1"))
 	errs.Addf("error %d", 2)
-	
+
 	assert.Equal(t, errs.IsEmpty(), false)
 	assert.Equal(t, len(errs), 2)
 
@@ -224,7 +224,7 @@ func TestErrorSetIntegration(t *testing.T) {
 	var moreErrs ErrorSet
 	moreErrs.Add(errors.New("error 3"))
 	moreErrs.Addf("error %d", 4)
-	
+
 	errs.Append(moreErrs)
 	assert.Equal(t, len(errs), 4)
 
@@ -235,7 +235,7 @@ func TestErrorSetIntegration(t *testing.T) {
 	// Test JoinedError and Unwrap
 	joined := errs.JoinedError("; ")
 	assert.Equal(t, joined.Error(), "error 1; error 2; error 3; error 4")
-	
+
 	unwrapped := joined.(interface{ Unwrap() []error }).Unwrap()
 	assert.Equal(t, len(unwrapped), 4)
 }

From 9764f1c638275749b8af261383417352c3a466ed Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 6 Nov 2025 14:05:31 +0000
Subject: [PATCH 4/7] Fix assert.Equal parameter order (actual, expected)

Co-authored-by: SuperSandro2000 <7258858+SuperSandro2000@users.noreply.github.com>
---
 errext/errorset_test.go | 92 ++++++++++++++++++++---------------------
 1 file changed, 46 insertions(+), 46 deletions(-)

diff --git a/errext/errorset_test.go b/errext/errorset_test.go
index f480976..febd22f 100644
--- a/errext/errorset_test.go
+++ b/errext/errorset_test.go
@@ -16,23 +16,23 @@ func TestErrorSetAdd(t *testing.T) {
 
 	// Add nil error - should not be added
 	errs.Add(nil)
-	assert.Equal(t, len(errs), 0)
+	assert.Equal(t, 0, len(errs))
 
 	// Add non-nil error
 	err1 := errors.New("error 1")
 	errs.Add(err1)
-	assert.Equal(t, len(errs), 1)
-	assert.Equal(t, errs[0].Error(), "error 1")
+	assert.Equal(t, 1, len(errs))
+	assert.Equal(t, "error 1", errs[0].Error())
 
 	// Add another non-nil error
 	err2 := errors.New("error 2")
 	errs.Add(err2)
-	assert.Equal(t, len(errs), 2)
-	assert.Equal(t, errs[1].Error(), "error 2")
+	assert.Equal(t, 2, len(errs))
+	assert.Equal(t, "error 2", errs[1].Error())
 
 	// Add nil error again - should not be added
 	errs.Add(nil)
-	assert.Equal(t, len(errs), 2)
+	assert.Equal(t, 2, len(errs))
 }
 
 func TestErrorSetAddf(t *testing.T) {
@@ -40,18 +40,18 @@ func TestErrorSetAddf(t *testing.T) {
 
 	// Add formatted error
 	errs.Addf("error with number: %d", 42)
-	assert.Equal(t, len(errs), 1)
-	assert.Equal(t, errs[0].Error(), "error with number: 42")
+	assert.Equal(t, 1, len(errs))
+	assert.Equal(t, "error with number: 42", errs[0].Error())
 
 	// Add another formatted error
 	errs.Addf("error with string: %s", "test")
-	assert.Equal(t, len(errs), 2)
-	assert.Equal(t, errs[1].Error(), "error with string: test")
+	assert.Equal(t, 2, len(errs))
+	assert.Equal(t, "error with string: test", errs[1].Error())
 
 	// Add formatted error without parameters
 	errs.Addf("simple error")
-	assert.Equal(t, len(errs), 3)
-	assert.Equal(t, errs[2].Error(), "simple error")
+	assert.Equal(t, 3, len(errs))
+	assert.Equal(t, "simple error", errs[2].Error())
 }
 
 func TestErrorSetAppend(t *testing.T) {
@@ -65,31 +65,31 @@ func TestErrorSetAppend(t *testing.T) {
 
 	// Append errs2 to errs1
 	errs1.Append(errs2)
-	assert.Equal(t, len(errs1), 4)
-	assert.Equal(t, errs1[0].Error(), "error 1")
-	assert.Equal(t, errs1[1].Error(), "error 2")
-	assert.Equal(t, errs1[2].Error(), "error 3")
-	assert.Equal(t, errs1[3].Error(), "error 4")
+	assert.Equal(t, 4, len(errs1))
+	assert.Equal(t, "error 1", errs1[0].Error())
+	assert.Equal(t, "error 2", errs1[1].Error())
+	assert.Equal(t, "error 3", errs1[2].Error())
+	assert.Equal(t, "error 4", errs1[3].Error())
 
 	// Append empty ErrorSet
 	var errs3 ErrorSet
 	errs1.Append(errs3)
-	assert.Equal(t, len(errs1), 4)
+	assert.Equal(t, 4, len(errs1))
 }
 
 func TestErrorSetIsEmpty(t *testing.T) {
 	var errs ErrorSet
 
 	// Empty ErrorSet
-	assert.Equal(t, errs.IsEmpty(), true)
+	assert.Equal(t, true, errs.IsEmpty())
 
 	// Add an error
 	errs.Add(errors.New("error"))
-	assert.Equal(t, errs.IsEmpty(), false)
+	assert.Equal(t, false, errs.IsEmpty())
 
 	// Create new ErrorSet with errors
 	errs2 := ErrorSet{errors.New("error 1"), errors.New("error 2")}
-	assert.Equal(t, errs2.IsEmpty(), false)
+	assert.Equal(t, false, errs2.IsEmpty())
 }
 
 func TestErrorSetJoin(t *testing.T) {
@@ -97,26 +97,26 @@ func TestErrorSetJoin(t *testing.T) {
 
 	// Empty ErrorSet
 	result := errs.Join(", ")
-	assert.Equal(t, result, "")
+	assert.Equal(t, "", result)
 
 	// Single error
 	errs.Add(errors.New("error 1"))
 	result = errs.Join(", ")
-	assert.Equal(t, result, "error 1")
+	assert.Equal(t, "error 1", result)
 
 	// Multiple errors with comma separator
 	errs.Add(errors.New("error 2"))
 	errs.Add(errors.New("error 3"))
 	result = errs.Join(", ")
-	assert.Equal(t, result, "error 1, error 2, error 3")
+	assert.Equal(t, "error 1, error 2, error 3", result)
 
 	// Multiple errors with different separator
 	result = errs.Join(" | ")
-	assert.Equal(t, result, "error 1 | error 2 | error 3")
+	assert.Equal(t, "error 1 | error 2 | error 3", result)
 
 	// Multiple errors with newline separator
 	result = errs.Join("\n")
-	assert.Equal(t, result, "error 1\nerror 2\nerror 3")
+	assert.Equal(t, "error 1\nerror 2\nerror 3", result)
 }
 
 func TestErrorSetJoinedError(t *testing.T) {
@@ -124,18 +124,18 @@ func TestErrorSetJoinedError(t *testing.T) {
 
 	// Empty ErrorSet
 	joined := errs.JoinedError(", ")
-	assert.Equal(t, joined.Error(), "")
+	assert.Equal(t, "", joined.Error())
 
 	// Single error
 	errs.Add(errors.New("error 1"))
 	joined = errs.JoinedError(", ")
-	assert.Equal(t, joined.Error(), "error 1")
+	assert.Equal(t, "error 1", joined.Error())
 
 	// Multiple errors
 	errs.Add(errors.New("error 2"))
 	errs.Add(errors.New("error 3"))
 	joined = errs.JoinedError("; ")
-	assert.Equal(t, joined.Error(), "error 1; error 2; error 3")
+	assert.Equal(t, "error 1; error 2; error 3", joined.Error())
 }
 
 func TestJoinedErrorError(t *testing.T) {
@@ -144,14 +144,14 @@ func TestJoinedErrorError(t *testing.T) {
 		errs:      []error{errors.New("error 1"), errors.New("error 2")},
 		separator: " - ",
 	}
-	assert.Equal(t, je.Error(), "error 1 - error 2")
+	assert.Equal(t, "error 1 - error 2", je.Error())
 
 	// Empty error list
 	je2 := joinedError{
 		errs:      []error{},
 		separator: ", ",
 	}
-	assert.Equal(t, je2.Error(), "")
+	assert.Equal(t, "", je2.Error())
 }
 
 func TestJoinedErrorUnwrap(t *testing.T) {
@@ -168,16 +168,16 @@ func TestJoinedErrorUnwrap(t *testing.T) {
 
 	// Unwrap should return the original errors
 	unwrapped := joined.(interface{ Unwrap() []error }).Unwrap()
-	assert.Equal(t, len(unwrapped), 3)
-	assert.Equal(t, unwrapped[0], err1)
-	assert.Equal(t, unwrapped[1], err2)
-	assert.Equal(t, unwrapped[2], err3)
+	assert.Equal(t, 3, len(unwrapped))
+	assert.Equal(t, err1, unwrapped[0])
+	assert.Equal(t, err2, unwrapped[1])
+	assert.Equal(t, err3, unwrapped[2])
 
 	// Test with errors.Is and errors.As
-	assert.Equal(t, errors.Is(joined, err1), true)
-	assert.Equal(t, errors.Is(joined, err2), true)
-	assert.Equal(t, errors.Is(joined, err3), true)
-	assert.Equal(t, errors.Is(joined, errors.New("different error")), false)
+	assert.Equal(t, true, errors.Is(joined, err1))
+	assert.Equal(t, true, errors.Is(joined, err2))
+	assert.Equal(t, true, errors.Is(joined, err3))
+	assert.Equal(t, false, errors.Is(joined, errors.New("different error")))
 }
 
 func TestErrorSetLogFatalIfError(t *testing.T) {
@@ -211,14 +211,14 @@ func TestErrorSetIntegration(t *testing.T) {
 	var errs ErrorSet
 
 	// Start empty
-	assert.Equal(t, errs.IsEmpty(), true)
+	assert.Equal(t, true, errs.IsEmpty())
 
 	// Add some errors using different methods
 	errs.Add(errors.New("error 1"))
 	errs.Addf("error %d", 2)
 
-	assert.Equal(t, errs.IsEmpty(), false)
-	assert.Equal(t, len(errs), 2)
+	assert.Equal(t, false, errs.IsEmpty())
+	assert.Equal(t, 2, len(errs))
 
 	// Create another ErrorSet and append
 	var moreErrs ErrorSet
@@ -226,16 +226,16 @@ func TestErrorSetIntegration(t *testing.T) {
 	moreErrs.Addf("error %d", 4)
 
 	errs.Append(moreErrs)
-	assert.Equal(t, len(errs), 4)
+	assert.Equal(t, 4, len(errs))
 
 	// Test Join
 	result := errs.Join(" | ")
-	assert.Equal(t, result, "error 1 | error 2 | error 3 | error 4")
+	assert.Equal(t, "error 1 | error 2 | error 3 | error 4", result)
 
 	// Test JoinedError and Unwrap
 	joined := errs.JoinedError("; ")
-	assert.Equal(t, joined.Error(), "error 1; error 2; error 3; error 4")
+	assert.Equal(t, "error 1; error 2; error 3; error 4", joined.Error())
 
 	unwrapped := joined.(interface{ Unwrap() []error }).Unwrap()
-	assert.Equal(t, len(unwrapped), 4)
+	assert.Equal(t, 4, len(unwrapped))
 }

From 20957575bb1b6f5b8e4f353720c1c0e46f720c86 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 6 Nov 2025 15:00:04 +0000
Subject: [PATCH 5/7] Correct assert.Equal parameter order per review feedback

Co-authored-by: SuperSandro2000 <7258858+SuperSandro2000@users.noreply.github.com>
---
 errext/errorset_test.go | 92 ++++++++++++++++++++---------------------
 1 file changed, 46 insertions(+), 46 deletions(-)

diff --git a/errext/errorset_test.go b/errext/errorset_test.go
index febd22f..f480976 100644
--- a/errext/errorset_test.go
+++ b/errext/errorset_test.go
@@ -16,23 +16,23 @@ func TestErrorSetAdd(t *testing.T) {
 
 	// Add nil error - should not be added
 	errs.Add(nil)
-	assert.Equal(t, 0, len(errs))
+	assert.Equal(t, len(errs), 0)
 
 	// Add non-nil error
 	err1 := errors.New("error 1")
 	errs.Add(err1)
-	assert.Equal(t, 1, len(errs))
-	assert.Equal(t, "error 1", errs[0].Error())
+	assert.Equal(t, len(errs), 1)
+	assert.Equal(t, errs[0].Error(), "error 1")
 
 	// Add another non-nil error
 	err2 := errors.New("error 2")
 	errs.Add(err2)
-	assert.Equal(t, 2, len(errs))
-	assert.Equal(t, "error 2", errs[1].Error())
+	assert.Equal(t, len(errs), 2)
+	assert.Equal(t, errs[1].Error(), "error 2")
 
 	// Add nil error again - should not be added
 	errs.Add(nil)
-	assert.Equal(t, 2, len(errs))
+	assert.Equal(t, len(errs), 2)
 }
 
 func TestErrorSetAddf(t *testing.T) {
@@ -40,18 +40,18 @@ func TestErrorSetAddf(t *testing.T) {
 
 	// Add formatted error
 	errs.Addf("error with number: %d", 42)
-	assert.Equal(t, 1, len(errs))
-	assert.Equal(t, "error with number: 42", errs[0].Error())
+	assert.Equal(t, len(errs), 1)
+	assert.Equal(t, errs[0].Error(), "error with number: 42")
 
 	// Add another formatted error
 	errs.Addf("error with string: %s", "test")
-	assert.Equal(t, 2, len(errs))
-	assert.Equal(t, "error with string: test", errs[1].Error())
+	assert.Equal(t, len(errs), 2)
+	assert.Equal(t, errs[1].Error(), "error with string: test")
 
 	// Add formatted error without parameters
 	errs.Addf("simple error")
-	assert.Equal(t, 3, len(errs))
-	assert.Equal(t, "simple error", errs[2].Error())
+	assert.Equal(t, len(errs), 3)
+	assert.Equal(t, errs[2].Error(), "simple error")
 }
 
 func TestErrorSetAppend(t *testing.T) {
@@ -65,31 +65,31 @@ func TestErrorSetAppend(t *testing.T) {
 
 	// Append errs2 to errs1
 	errs1.Append(errs2)
-	assert.Equal(t, 4, len(errs1))
-	assert.Equal(t, "error 1", errs1[0].Error())
-	assert.Equal(t, "error 2", errs1[1].Error())
-	assert.Equal(t, "error 3", errs1[2].Error())
-	assert.Equal(t, "error 4", errs1[3].Error())
+	assert.Equal(t, len(errs1), 4)
+	assert.Equal(t, errs1[0].Error(), "error 1")
+	assert.Equal(t, errs1[1].Error(), "error 2")
+	assert.Equal(t, errs1[2].Error(), "error 3")
+	assert.Equal(t, errs1[3].Error(), "error 4")
 
 	// Append empty ErrorSet
 	var errs3 ErrorSet
 	errs1.Append(errs3)
-	assert.Equal(t, 4, len(errs1))
+	assert.Equal(t, len(errs1), 4)
 }
 
 func TestErrorSetIsEmpty(t *testing.T) {
 	var errs ErrorSet
 
 	// Empty ErrorSet
-	assert.Equal(t, true, errs.IsEmpty())
+	assert.Equal(t, errs.IsEmpty(), true)
 
 	// Add an error
 	errs.Add(errors.New("error"))
-	assert.Equal(t, false, errs.IsEmpty())
+	assert.Equal(t, errs.IsEmpty(), false)
 
 	// Create new ErrorSet with errors
 	errs2 := ErrorSet{errors.New("error 1"), errors.New("error 2")}
-	assert.Equal(t, false, errs2.IsEmpty())
+	assert.Equal(t, errs2.IsEmpty(), false)
 }
 
 func TestErrorSetJoin(t *testing.T) {
@@ -97,26 +97,26 @@ func TestErrorSetJoin(t *testing.T) {
 
 	// Empty ErrorSet
 	result := errs.Join(", ")
-	assert.Equal(t, "", result)
+	assert.Equal(t, result, "")
 
 	// Single error
 	errs.Add(errors.New("error 1"))
 	result = errs.Join(", ")
-	assert.Equal(t, "error 1", result)
+	assert.Equal(t, result, "error 1")
 
 	// Multiple errors with comma separator
 	errs.Add(errors.New("error 2"))
 	errs.Add(errors.New("error 3"))
 	result = errs.Join(", ")
-	assert.Equal(t, "error 1, error 2, error 3", result)
+	assert.Equal(t, result, "error 1, error 2, error 3")
 
 	// Multiple errors with different separator
 	result = errs.Join(" | ")
-	assert.Equal(t, "error 1 | error 2 | error 3", result)
+	assert.Equal(t, result, "error 1 | error 2 | error 3")
 
 	// Multiple errors with newline separator
 	result = errs.Join("\n")
-	assert.Equal(t, "error 1\nerror 2\nerror 3", result)
+	assert.Equal(t, result, "error 1\nerror 2\nerror 3")
 }
 
 func TestErrorSetJoinedError(t *testing.T) {
@@ -124,18 +124,18 @@ func TestErrorSetJoinedError(t *testing.T) {
 
 	// Empty ErrorSet
 	joined := errs.JoinedError(", ")
-	assert.Equal(t, "", joined.Error())
+	assert.Equal(t, joined.Error(), "")
 
 	// Single error
 	errs.Add(errors.New("error 1"))
 	joined = errs.JoinedError(", ")
-	assert.Equal(t, "error 1", joined.Error())
+	assert.Equal(t, joined.Error(), "error 1")
 
 	// Multiple errors
 	errs.Add(errors.New("error 2"))
 	errs.Add(errors.New("error 3"))
 	joined = errs.JoinedError("; ")
-	assert.Equal(t, "error 1; error 2; error 3", joined.Error())
+	assert.Equal(t, joined.Error(), "error 1; error 2; error 3")
 }
 
 func TestJoinedErrorError(t *testing.T) {
@@ -144,14 +144,14 @@ func TestJoinedErrorError(t *testing.T) {
 		errs:      []error{errors.New("error 1"), errors.New("error 2")},
 		separator: " - ",
 	}
-	assert.Equal(t, "error 1 - error 2", je.Error())
+	assert.Equal(t, je.Error(), "error 1 - error 2")
 
 	// Empty error list
 	je2 := joinedError{
 		errs:      []error{},
 		separator: ", ",
 	}
-	assert.Equal(t, "", je2.Error())
+	assert.Equal(t, je2.Error(), "")
 }
 
 func TestJoinedErrorUnwrap(t *testing.T) {
@@ -168,16 +168,16 @@ func TestJoinedErrorUnwrap(t *testing.T) {
 
 	// Unwrap should return the original errors
 	unwrapped := joined.(interface{ Unwrap() []error }).Unwrap()
-	assert.Equal(t, 3, len(unwrapped))
-	assert.Equal(t, err1, unwrapped[0])
-	assert.Equal(t, err2, unwrapped[1])
-	assert.Equal(t, err3, unwrapped[2])
+	assert.Equal(t, len(unwrapped), 3)
+	assert.Equal(t, unwrapped[0], err1)
+	assert.Equal(t, unwrapped[1], err2)
+	assert.Equal(t, unwrapped[2], err3)
 
 	// Test with errors.Is and errors.As
-	assert.Equal(t, true, errors.Is(joined, err1))
-	assert.Equal(t, true, errors.Is(joined, err2))
-	assert.Equal(t, true, errors.Is(joined, err3))
-	assert.Equal(t, false, errors.Is(joined, errors.New("different error")))
+	assert.Equal(t, errors.Is(joined, err1), true)
+	assert.Equal(t, errors.Is(joined, err2), true)
+	assert.Equal(t, errors.Is(joined, err3), true)
+	assert.Equal(t, errors.Is(joined, errors.New("different error")), false)
 }
 
 func TestErrorSetLogFatalIfError(t *testing.T) {
@@ -211,14 +211,14 @@ func TestErrorSetIntegration(t *testing.T) {
 	var errs ErrorSet
 
 	// Start empty
-	assert.Equal(t, true, errs.IsEmpty())
+	assert.Equal(t, errs.IsEmpty(), true)
 
 	// Add some errors using different methods
 	errs.Add(errors.New("error 1"))
 	errs.Addf("error %d", 2)
 
-	assert.Equal(t, false, errs.IsEmpty())
-	assert.Equal(t, 2, len(errs))
+	assert.Equal(t, errs.IsEmpty(), false)
+	assert.Equal(t, len(errs), 2)
 
 	// Create another ErrorSet and append
 	var moreErrs ErrorSet
@@ -226,16 +226,16 @@ func TestErrorSetIntegration(t *testing.T) {
 	moreErrs.Addf("error %d", 4)
 
 	errs.Append(moreErrs)
-	assert.Equal(t, 4, len(errs))
+	assert.Equal(t, len(errs), 4)
 
 	// Test Join
 	result := errs.Join(" | ")
-	assert.Equal(t, "error 1 | error 2 | error 3 | error 4", result)
+	assert.Equal(t, result, "error 1 | error 2 | error 3 | error 4")
 
 	// Test JoinedError and Unwrap
 	joined := errs.JoinedError("; ")
-	assert.Equal(t, "error 1; error 2; error 3; error 4", joined.Error())
+	assert.Equal(t, joined.Error(), "error 1; error 2; error 3; error 4")
 
 	unwrapped := joined.(interface{ Unwrap() []error }).Unwrap()
-	assert.Equal(t, 4, len(unwrapped))
+	assert.Equal(t, len(unwrapped), 4)
 }

From e68de7d003a9c6d761075125355522f08c4f112a Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 7 Nov 2025 15:37:47 +0000
Subject: [PATCH 6/7] Remove direct Unwrap() testing, rely on errors.Is()
 instead

Co-authored-by: SuperSandro2000 <7258858+SuperSandro2000@users.noreply.github.com>
---
 errext/errorset_test.go | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)

diff --git a/errext/errorset_test.go b/errext/errorset_test.go
index f480976..abf75c3 100644
--- a/errext/errorset_test.go
+++ b/errext/errorset_test.go
@@ -166,14 +166,7 @@ func TestJoinedErrorUnwrap(t *testing.T) {
 
 	joined := errs.JoinedError(", ")
 
-	// Unwrap should return the original errors
-	unwrapped := joined.(interface{ Unwrap() []error }).Unwrap()
-	assert.Equal(t, len(unwrapped), 3)
-	assert.Equal(t, unwrapped[0], err1)
-	assert.Equal(t, unwrapped[1], err2)
-	assert.Equal(t, unwrapped[2], err3)
-
-	// Test with errors.Is and errors.As
+	// Test that errors.Is correctly identifies wrapped errors
 	assert.Equal(t, errors.Is(joined, err1), true)
 	assert.Equal(t, errors.Is(joined, err2), true)
 	assert.Equal(t, errors.Is(joined, err3), true)
@@ -232,10 +225,7 @@ func TestErrorSetIntegration(t *testing.T) {
 	result := errs.Join(" | ")
 	assert.Equal(t, result, "error 1 | error 2 | error 3 | error 4")
 
-	// Test JoinedError and Unwrap
+	// Test JoinedError
 	joined := errs.JoinedError("; ")
 	assert.Equal(t, joined.Error(), "error 1; error 2; error 3; error 4")
-
-	unwrapped := joined.(interface{ Unwrap() []error }).Unwrap()
-	assert.Equal(t, len(unwrapped), 4)
 }

From 3eca88b3d8754073fa2fd4c4afdc945a3ab520e6 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 14 Nov 2025 16:15:19 +0000
Subject: [PATCH 7/7] Rename test helper function for clarity

Co-authored-by: SuperSandro2000 <7258858+SuperSandro2000@users.noreply.github.com>
---
 errext/errorset_test.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/errext/errorset_test.go b/errext/errorset_test.go
index abf75c3..868d272 100644
--- a/errext/errorset_test.go
+++ b/errext/errorset_test.go
@@ -180,10 +180,10 @@ func TestErrorSetLogFatalIfError(t *testing.T) {
 	// on empty ErrorSet. In a real scenario, this would not call os.Exit.
 	// Note: We cannot fully test LogFatalIfError as it calls os.Exit(1)
 	// For an empty ErrorSet, it should complete without exiting
-	testLogFatalWithEmptyErrorSet(emptyErrs)
+	helperLogFatalIfErrorWithEmptySet(emptyErrs)
 }
 
-func testLogFatalWithEmptyErrorSet(errs ErrorSet) {
+func helperLogFatalIfErrorWithEmptySet(errs ErrorSet) {
 	// This function is a helper to test that LogFatalIfError doesn't panic
 	// on empty ErrorSet. We cannot test the actual exit behavior.
 	defer func() {