diff --git a/pgtype/bool_test.go b/pgtype/bool_test.go
index 50725d6a..53df1747 100644
--- a/pgtype/bool_test.go
+++ b/pgtype/bool_test.go
@@ -22,11 +22,11 @@ func TestBoolConvertFrom(t *testing.T) {
 		result pgtype.Bool
 	}{
 		{source: true, result: pgtype.Bool{Bool: true, Status: pgtype.Present}},
-		{source: false, result: pgtype.Bool{Bool: true, Status: pgtype.Present}},
+		{source: false, result: pgtype.Bool{Bool: false, Status: pgtype.Present}},
 		{source: "true", result: pgtype.Bool{Bool: true, Status: pgtype.Present}},
-		{source: "false", result: pgtype.Bool{Bool: true, Status: pgtype.Present}},
+		{source: "false", result: pgtype.Bool{Bool: false, Status: pgtype.Present}},
 		{source: "t", result: pgtype.Bool{Bool: true, Status: pgtype.Present}},
-		{source: "f", result: pgtype.Bool{Bool: true, Status: pgtype.Present}},
+		{source: "f", result: pgtype.Bool{Bool: false, Status: pgtype.Present}},
 	}
 
 	for i, tt := range successfulTests {
@@ -35,5 +35,9 @@ func TestBoolConvertFrom(t *testing.T) {
 		if err != nil {
 			t.Errorf("%d: %v", i, err)
 		}
+
+		if r != tt.result {
+			t.Errorf("%d: expected %v to convert to %v, but it was %v", i, tt.source, tt.result, r)
+		}
 	}
 }
diff --git a/pgtype/date_test.go b/pgtype/date_test.go
index 21bc6fa3..c3e971d0 100644
--- a/pgtype/date_test.go
+++ b/pgtype/date_test.go
@@ -26,15 +26,15 @@ func TestDateConvertFrom(t *testing.T) {
 
 	successfulTests := []struct {
 		source interface{}
-		result *pgtype.Date
+		result pgtype.Date
 	}{
-		{source: time.Date(1900, 1, 1, 0, 0, 0, 0, time.UTC), result: &pgtype.Date{Time: time.Date(1900, 1, 1, 0, 0, 0, 0, time.UTC), Status: pgtype.Present}},
-		{source: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC), result: &pgtype.Date{Time: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC), Status: pgtype.Present}},
-		{source: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC), result: &pgtype.Date{Time: time.Date(1999, 12, 31, 0, 0, 0, 0, time.UTC), Status: pgtype.Present}},
-		{source: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC), result: &pgtype.Date{Time: time.Date(2000, 1, 1, 0, 0, 0, 0, time.UTC), Status: pgtype.Present}},
-		{source: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC), result: &pgtype.Date{Time: time.Date(2000, 1, 2, 0, 0, 0, 0, time.UTC), Status: pgtype.Present}},
-		{source: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC), result: &pgtype.Date{Time: time.Date(2200, 1, 1, 0, 0, 0, 0, time.UTC), Status: pgtype.Present}},
-		{source: _time(time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC)), result: &pgtype.Date{Time: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC), Status: pgtype.Present}},
+		{source: time.Date(1900, 1, 1, 0, 0, 0, 0, time.UTC), result: pgtype.Date{Time: time.Date(1900, 1, 1, 0, 0, 0, 0, time.UTC), Status: pgtype.Present}},
+		{source: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC), result: pgtype.Date{Time: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC), Status: pgtype.Present}},
+		{source: time.Date(1999, 12, 31, 0, 0, 0, 0, time.UTC), result: pgtype.Date{Time: time.Date(1999, 12, 31, 0, 0, 0, 0, time.UTC), Status: pgtype.Present}},
+		{source: time.Date(2000, 1, 1, 0, 0, 0, 0, time.UTC), result: pgtype.Date{Time: time.Date(2000, 1, 1, 0, 0, 0, 0, time.UTC), Status: pgtype.Present}},
+		{source: time.Date(2000, 1, 2, 0, 0, 0, 0, time.UTC), result: pgtype.Date{Time: time.Date(2000, 1, 2, 0, 0, 0, 0, time.UTC), Status: pgtype.Present}},
+		{source: time.Date(2200, 1, 1, 0, 0, 0, 0, time.UTC), result: pgtype.Date{Time: time.Date(2200, 1, 1, 0, 0, 0, 0, time.UTC), Status: pgtype.Present}},
+		{source: _time(time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC)), result: pgtype.Date{Time: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC), Status: pgtype.Present}},
 	}
 
 	for i, tt := range successfulTests {
@@ -43,5 +43,9 @@ func TestDateConvertFrom(t *testing.T) {
 		if err != nil {
 			t.Errorf("%d: %v", i, err)
 		}
+
+		if d != tt.result {
+			t.Errorf("%d: expected %v to convert to %v, but it was %v", i, tt.source, tt.result, d)
+		}
 	}
 }
diff --git a/pgtype/int2_test.go b/pgtype/int2_test.go
index 0186ccd3..a8493a16 100644
--- a/pgtype/int2_test.go
+++ b/pgtype/int2_test.go
@@ -47,5 +47,9 @@ func TestInt2ConvertFrom(t *testing.T) {
 		if err != nil {
 			t.Errorf("%d: %v", i, err)
 		}
+
+		if r != tt.result {
+			t.Errorf("%d: expected %v to convert to %v, but it was %v", i, tt.source, tt.result, r)
+		}
 	}
 }
diff --git a/pgtype/int4_test.go b/pgtype/int4_test.go
index 9e994909..04411849 100644
--- a/pgtype/int4_test.go
+++ b/pgtype/int4_test.go
@@ -47,5 +47,9 @@ func TestInt4ConvertFrom(t *testing.T) {
 		if err != nil {
 			t.Errorf("%d: %v", i, err)
 		}
+
+		if r != tt.result {
+			t.Errorf("%d: expected %v to convert to %v, but it was %v", i, tt.source, tt.result, r)
+		}
 	}
 }
diff --git a/pgtype/int8_test.go b/pgtype/int8_test.go
index 1480e36f..ba246224 100644
--- a/pgtype/int8_test.go
+++ b/pgtype/int8_test.go
@@ -47,5 +47,9 @@ func TestInt8ConvertFrom(t *testing.T) {
 		if err != nil {
 			t.Errorf("%d: %v", i, err)
 		}
+
+		if r != tt.result {
+			t.Errorf("%d: expected %v to convert to %v, but it was %v", i, tt.source, tt.result, r)
+		}
 	}
 }
diff --git a/pgtype/timestamptz_test.go b/pgtype/timestamptz_test.go
index e650ffbb..795195f8 100644
--- a/pgtype/timestamptz_test.go
+++ b/pgtype/timestamptz_test.go
@@ -47,14 +47,14 @@ func TestTimestamptzConvertFrom(t *testing.T) {
 	}
 
 	for i, tt := range successfulTests {
-		var d pgtype.Timestamptz
-		err := d.ConvertFrom(tt.source)
+		var r pgtype.Timestamptz
+		err := r.ConvertFrom(tt.source)
 		if err != nil {
 			t.Errorf("%d: %v", i, err)
 		}
 
-		if d != tt.result {
-			t.Errorf("%d: expected %v to convert to %v, but it was %v", i, tt.source, tt.result, d)
+		if r != tt.result {
+			t.Errorf("%d: expected %v to convert to %v, but it was %v", i, tt.source, tt.result, r)
 		}
 	}
 }