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Fix nil ptr panic when adding env variables to uninitialized Generator #791

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Fix nil ptr panic when adding env variables to uninitialized Generator #791

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3 changes: 3 additions & 0 deletions generate/generate.go
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Original file line number Diff line number Diff line change
Expand Up @@ -540,6 +540,9 @@ func (g *Generator) addEnv(env, key string) {
} else {
// else the env doesn't exist, so add it and add it's index to g.envMap
g.Config.Process.Env = append(g.Config.Process.Env, env)
if g.envMap == nil {
g.envMap = map[string]int{}
}
g.envMap[key] = len(g.Config.Process.Env) - 1
}
}
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6 changes: 6 additions & 0 deletions generate/generate_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -124,6 +124,12 @@ func TestEnvCaching(t *testing.T) {
}
g.AddProcessEnv("", "")
assert.Equal(t, []string(nil), g.Config.Process.Env)

// Test with nil envMap.
g = generate.Generator{}
expected = []string{"k1=v1"}
g.AddProcessEnv("k1", "v1")
assert.Equal(t, expected, g.Config.Process.Env)
}

func TestMultipleEnvCaching(t *testing.T) {
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