diff --git a/src/segment_crystal_test.go b/src/segment_crystal_test.go
new file mode 100644
index 000000000000..90a783bc1b70
--- /dev/null
+++ b/src/segment_crystal_test.go
@@ -0,0 +1,31 @@
+package main
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestCrystal(t *testing.T) {
+	cases := []struct {
+		Case           string
+		ExpectedString string
+		Version        string
+	}{
+		{Case: "Crystal 1.0.0", ExpectedString: "1.0.0", Version: "Crystal 1.0.0 (2021-03-22)"},
+	}
+	for _, tc := range cases {
+		params := &mockedLanguageParams{
+			cmd:           "crystal",
+			versionParam:  "--version",
+			versionOutput: tc.Version,
+			extension:     "*.cr",
+		}
+		env, props := getMockedLanguageEnv(params)
+		c := &crystal{}
+		c.init(props, env)
+		assert.True(t, c.enabled(), fmt.Sprintf("Failed in case: %s", tc.Case))
+		assert.Equal(t, tc.ExpectedString, c.string(), fmt.Sprintf("Failed in case: %s", tc.Case))
+	}
+}
diff --git a/src/segment_golang_test.go b/src/segment_golang_test.go
index b7d8e18b13a6..4ac29f9098ff 100644
--- a/src/segment_golang_test.go
+++ b/src/segment_golang_test.go
@@ -7,6 +7,28 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
+type mockedLanguageParams struct {
+	cmd           string
+	versionParam  string
+	versionOutput string
+	extension     string
+}
+
+func getMockedLanguageEnv(params *mockedLanguageParams) (*MockedEnvironment, *properties) {
+	env := new(MockedEnvironment)
+	env.On("hasCommand", params.cmd).Return(true)
+	env.On("runCommand", params.cmd, []string{params.versionParam}).Return(params.versionOutput, nil)
+	env.On("hasFiles", params.extension).Return(true)
+	env.On("getcwd", nil).Return("/usr/home/project")
+	env.On("homeDir", nil).Return("/usr/home")
+	props := &properties{
+		values: map[Property]interface{}{
+			DisplayVersion: true,
+		},
+	}
+	return env, props
+}
+
 func TestGolang(t *testing.T) {
 	cases := []struct {
 		Case           string
@@ -17,17 +39,13 @@ func TestGolang(t *testing.T) {
 		{Case: "Go 1.16", ExpectedString: "1.16", Version: "go version go1.16 darwin/amd64"},
 	}
 	for _, tc := range cases {
-		env := new(MockedEnvironment)
-		env.On("hasCommand", "go").Return(true)
-		env.On("runCommand", "go", []string{"version"}).Return(tc.Version, nil)
-		env.On("hasFiles", "*.go").Return(true)
-		env.On("getcwd", nil).Return("/usr/home/project")
-		env.On("homeDir", nil).Return("/usr/home")
-		props := &properties{
-			values: map[Property]interface{}{
-				DisplayVersion: true,
-			},
+		params := &mockedLanguageParams{
+			cmd:           "go",
+			versionParam:  "version",
+			versionOutput: tc.Version,
+			extension:     "*.go",
 		}
+		env, props := getMockedLanguageEnv(params)
 		g := &golang{}
 		g.init(props, env)
 		assert.True(t, g.enabled(), fmt.Sprintf("Failed in case: %s", tc.Case))
diff --git a/src/segment_julia_test.go b/src/segment_julia_test.go
new file mode 100644
index 000000000000..212aa16b1c0b
--- /dev/null
+++ b/src/segment_julia_test.go
@@ -0,0 +1,32 @@
+package main
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestJulia(t *testing.T) {
+	cases := []struct {
+		Case           string
+		ExpectedString string
+		Version        string
+	}{
+		{Case: "Julia 1.6.0", ExpectedString: "1.6.0", Version: "julia version 1.6.0"},
+		{Case: "Julia 1.6.1", ExpectedString: "1.6.1", Version: "julia version 1.6.1"},
+	}
+	for _, tc := range cases {
+		params := &mockedLanguageParams{
+			cmd:           "julia",
+			versionParam:  "--version",
+			versionOutput: tc.Version,
+			extension:     "*.jl",
+		}
+		env, props := getMockedLanguageEnv(params)
+		j := &julia{}
+		j.init(props, env)
+		assert.True(t, j.enabled(), fmt.Sprintf("Failed in case: %s", tc.Case))
+		assert.Equal(t, tc.ExpectedString, j.string(), fmt.Sprintf("Failed in case: %s", tc.Case))
+	}
+}