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fix: cover more constraint syntax #198

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fix: cover more constraint syntax #198

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10 changes: 7 additions & 3 deletions ddlmod.go
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Original file line number Diff line number Diff line change
Expand Up @@ -209,8 +209,12 @@ func (d *ddl) renameTable(dst, src string) error {
return nil
}

func compileConstraintRegexp(name string) *regexp.Regexp {
return regexp.MustCompile("^(?i:CONSTRAINT)\\s+[\"`]?" + regexp.QuoteMeta(name) + "[\"`\\s]")
}

func (d *ddl) addConstraint(name string, sql string) {
reg := regexp.MustCompile("^CONSTRAINT [\"`]?" + regexp.QuoteMeta(name) + "[\"` ]")
reg := compileConstraintRegexp(name)

for i := 0; i < len(d.fields); i++ {
if reg.MatchString(d.fields[i]) {
Expand All @@ -223,7 +227,7 @@ func (d *ddl) addConstraint(name string, sql string) {
}

func (d *ddl) removeConstraint(name string) bool {
reg := regexp.MustCompile("^CONSTRAINT [\"`]?" + regexp.QuoteMeta(name) + "[\"` ]")
reg := compileConstraintRegexp(name)

for i := 0; i < len(d.fields); i++ {
if reg.MatchString(d.fields[i]) {
Expand All @@ -235,7 +239,7 @@ func (d *ddl) removeConstraint(name string) bool {
}

func (d *ddl) hasConstraint(name string) bool {
reg := regexp.MustCompile("^CONSTRAINT [\"`]?" + regexp.QuoteMeta(name) + "[\"` ]")
reg := compileConstraintRegexp(name)

for _, f := range d.fields {
if reg.MatchString(f) {
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35 changes: 35 additions & 0 deletions ddlmod_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -313,6 +313,41 @@ func TestRemoveConstraint(t *testing.T) {
success: true,
expect: []string{"`id` integer NOT NULL"},
},
{
name: "lowercase",
fields: []string{"`id` integer NOT NULL", "constraint `fk_users_notes` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`))"},
cName: "fk_users_notes",
success: true,
expect: []string{"`id` integer NOT NULL"},
},
{
name: "mixed_case",
fields: []string{"`id` integer NOT NULL", "cOnsTraiNT `fk_users_notes` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`))"},
cName: "fk_users_notes",
success: true,
expect: []string{"`id` integer NOT NULL"},
},
{
name: "newline",
fields: []string{"`id` integer NOT NULL", "CONSTRAINT `fk_users_notes`\nFOREIGN KEY (`user_id`) REFERENCES `users`(`id`))"},
cName: "fk_users_notes",
success: true,
expect: []string{"`id` integer NOT NULL"},
},
{
name: "lots_of_newlines",
fields: []string{"`id` integer NOT NULL", "constraint \n fk_users_notes \n FOREIGN KEY (`user_id`) REFERENCES `users`(`id`))"},
cName: "fk_users_notes",
success: true,
expect: []string{"`id` integer NOT NULL"},
},
{
name: "no_backtick",
fields: []string{"`id` integer NOT NULL", "CONSTRAINT fk_users_notes FOREIGN KEY (`user_id`) REFERENCES `users`(`id`))"},
cName: "fk_users_notes",
success: true,
expect: []string{"`id` integer NOT NULL"},
},
{
name: "check",
fields: []string{"CONSTRAINT `name_checker` CHECK (`name` <> 'thetadev')", "`id` integer NOT NULL"},
Expand Down
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